bluuebunny/crossref_metadata_2025 huggingface dataset:
Multi-messenger lifetime constraints on heavy decaying dark matter
Authors: Hajjar Rasmi
Published: February 2022

Ultra-high-energy (UHE) neutrino and gamma-ray measurements will help on the dark matter (DM) quest via indirect detection. In this work we used UHE measurements of the astrophysical gamma-ray flux and we forecasted the performance of the future radio neutrino telescopes in order to see the potential limits that they could place on the lifetime of DM particles. We focused in the range of DM masses m
DM = [107 — 1015] GeV. We provide the current gamma-ray limits placed by the different experimental collaborations CASA-MIA, KASCADE KASCADE-Grande, Pierre Auger Observatory, Telescope Array and EAS-MSU. We also compare this limits with the projected UHE neutrino ones from future radio neutrino telescopes in order to see the complementarity between both messengers. For a more detailed description of the analysis we refer the reader to [1, 2, 3].
Signatures of primordial black hole dark matter at DUNE and THEIA
Authors: Romeri Valentina De
Published: February 2022

Primordial black holes (PBHs) are a potential dark matter candidate whose masses can span over many orders of magnitude. If their masses lie in the 1015 — 1017 g range, they can emit sizeable fluxes of MeV neutrinos through evaporation via Hawking radiation. We investigate the possibility of detecting light (non-)rotating PBHs with future neutrino experiments DUNE and THEIA. We show that these next-generation facilities will be able to set competitive constraints on PBH dark matter, providing complementary probes in a part of the PBH parameter space currently constrained mainly by photon data.
SABRE South at the Stawell Underground Physics Laboratory
Authors: Melbourne William Dix
Published: February 2022

The SABRE (Sodium-iodide with Active Background REjection) experiments aim to detect an annual rate modulation from dark matter interactions in ultra-high purity NaI(Tl) crystals. The SABRE South experiment is located at the Stawell Underground Physics Laboratory (SUPL), Australia, the first deep underground laboratory in the southern hemisphere, due to be completed in late 2021. SABRE South is designed to disentangle seasonal or site-related effects from the dark matter-like modulated signal first observed by DAMA/LIBRA in the Northern Hemisphere. It is a partner to the SABRE North effort at the Gran Sasso National Laboratory (LNGS). SABRE South is instrumented with ultra-high purity NaI(Tl) crystals immersed in a linear alkylbenzene based liquid scintillator veto, further surrounded by passive steel and polyethylene shielding and a plastic scintillator muon veto. The SABRE South experiment is under construction, and will be commissioned in early 2022.

In this article we present the final design of SABRE South, the status of its construction, and its expected sensitivity to a DAMA/LIBRA like modulation. We will also present a brief report on the status of SUPL.
Thermal WIMPs and the scale of new physics
Authors: Kahlhoefer Felix
Published: February 2022

The non-observation of conclusive dark matter signals raises the question whether WIMPs can still account for the dark matter of the universe. In this talk I will present results from a global analysis of effective field theory operators describing the interactions between WIMPs and Standard Model particles. In this bottom-up approach, the global fitting framework GAMBIT is used to simultaneously vary the coefficients of 14 such operators, along with the WIMP mass, the scale of new physics and several nuisance parameters. The likelihood functions include the latest data from Planck, direct and indirect detection experiments, and the LHC. Although the observed relic density can be reproduced in large regions of parameter space, there cannot be a large hierarchy between the dark matter mass and the scale of new physics, which raises concerns about the validity of the effective field theory. I will discuss possible ways to address this issue in order to consistently interpret the latest results from WIMP searches at the LHC.
Search for Dark Matter with the PICO-500 Experiment
Authors: Giroux Guillaume
Published: February 2022

The PICO collaboration searches for WIMPs using large superheated liquid detectors, or bubble chambers. Recent results from the complete exposure of the PICO-60 C3F8 detector at SNOLAB set the world’s most stringent limits on WIMP-proton spin-dependent interactions. PICO-500, the next generation, tonne-scale experiment to be constructed at SNOLAB, is set to explore WIMP-proton spin-dependent interactions with unprecedented sensitivity.
Probing the Dark Matter of the Three-loop Radiative Neutrino Mass Generation Model with the Cherenkov Telescope Array
Authors: Chowdhury Talal Ahmed , Hassan Saquib , Hossain Jahid , Nasri Salah , Shamim Mahmud Ashraf
Published: February 2022

We investigate the prospect of detecting the Dark Matter (DM) candidate in the three-loop radiative neutrino mass generation model extended with large electroweak multiplets of the Standard Model (SM) gauge group, at the future imaging atmospheric Cherenkov telescope known as the Cherenkov Telescope Array (CTA). We find that the addition of such large electroweak multiplets leads to a sizable Sommerfeld enhanced annihilation of the DM with O(TeV) mass, into the SM gauge bosons which results in continuum and line-like spectra of very high energy (VHE) gamma-rays, and therefore becomes observable for the CTA. By considering the continuum VHE gamma-rays produced from the DM annihilation at the Galactic center, we probe the parameter space of the model using the sensitivity reach of the CTA.
Supernova bounds on axion-like particles coupled with nucleons and electrons
Authors: Lucente Giuseppe
Published: February 2022

We investigate the potential of type II supernovae (SNe) to constrain axion-like particles (ALPs) coupled simultaneously to nucleons and electrons. ALPs coupled to nucleons can be efficiently produced in the SN core via nucleon-nucleon bremsstrahlung and, for masses exceeding 1 MeV, they would decay into electron-positron pairs, generating a positron flux. In the case of Galactic SNe, the annihilation of the created positrons with the electrons in the Galaxy would contribute to the 511 keV annihilation line. The SPI (SPectrometer on INTEGRAL) observation of this line allows us to exclude a wide range of the axion-electron coupling, 10−19 < gae
< 10−11, for gap
– 10−9. Additionally, ALPs from extra-galactic SNe decaying into electron-positron pairs would yield a contribution to the cosmic X-ray background. In this case, we constrain the ALP-electron coupling down to gae
∼ 10−20.
High-energy neutrinos from Galactic sources
Authors: Niro Viviana
Published: February 2022

Among the galactic sources that can be detected by the KM3NeT detector, we will consider the eHWC J1825-134 source recently detected by the HAWC telescope. Moreover, we consider the source RX J1713.7-3946 and show the prospects of detection in a fully hadronic and in a lepto-hadronic scenario. Considering the IceCube detector, instead, we focus on the gamma-ray sources eHWC J1907+063 and eHWC J2019+368. We found that a detection at 3σ or more at the IceCube detector should be within reach of the next decade. Finally, we consider also the source 2HWC J1857+027, since it is coincident with the location of a neutrino excess. For this source, we show the dependence on the specific value of the flux, on the extension and on the cut-off energy. A detection at 3σ in the next decade will depend on these parameters.
Dissecting the inner Galaxy with gamma-ray pixel count statistics
Authors: Manconi Silvia , Calore Francesca , Donato Fiorenza
Published: February 2022

The nature of the GeV gamma-ray Galactic center excess (GCE) in the data of Fermi-LAT is still under investigation. Different techniques, such as template fitting and photon-count statistical methods, have been applied in the past few years in order to disentangle between a GCE coming from sub-threshold point sources or rather from diffuse emissions, such as the dark matter annihilation in the Galactic halo. A major limit to all these studies is the modeling of the Galactic diffuse foreground, and the impact of residual mis-modeled emission on the results’ robustness. We combine for the first time adaptive template fitting and pixel count statistical methods in order to assess the role of sub-threshold point sources to the GCE, while minimizing the mis-modelling of diffuse emission components. We reconstruct the flux distribution of point sources in the inner Galaxy well below the Fermi-LAT detection threshold, and measure their radial and longitudinal profiles. We find that point sources and diffuse emission from the Galactic bulge each contributes about 10% of the total emission therein, disclosing a potential sub-threshold point-source contribution to the GCE.
New Properties of Secondary Cosmic Rays observed by the Alpha Magnetic Spectrometer on the International Space Station
Authors: Chen Yao , Paniccia Mercedes , Oliva Alberto , Yan Qi , Choutko Vitaly , Liu Zhen , Formato Valerio , Derome Laurent Yves Marie , Zhang Cheng
Published: February 2022

Precise measurements of the secondary cosmic ray fluxes and of secondary-over-primary flux ratios as functions of rigidity are essential for cosmic ray propagation study. We report the properties of heavy secondary cosmic ray fluorine (F) nuclei in the rigidity R range 2GV to 3 TV observed by the Alpha Magnetic Spectrometer experiment (AMS-02) on the International Space Station. The secondary-over-primary ratios fluorine-to-silicon and boron-to-oxygen (or boron-to-carbon) will be discussed, showing that the heavy cosmic rays, from fluorine to silicon, have different propagation properties compared to those of light cosmic rays, from helium to oxygen. The properties of cosmic-ray sodium and aluminum nuclei, which are partly secondary and partly primary, will also be presented.
First Cherenkov directional detection of sub-MeV solar neutrinos in Borexino
Authors: Martyn Johann , Agostini M. , Altenmüller K. , Appel S. , Atroshchenko V. , Bagdasarian Z. , Basilico D. , Bellini G. , Benziger J. , Biondi R. , Bravo D. , Caccianiga B. , Calaprice F. , Caminata A. , Cavalcante P. , Chepurnov A. , D’Angelo D. , Davini S. , Derbin A. , Di Giacinto A. , Di Marcello V. , Ding X.F. , Di Ludovico A. , Di Noto L. , Drachnev I. , Formozov A. , Franco D. , Galbiati C. , Ghiano C. , Giammarchi M. , Goretti A. , Göttel A.S. , Gromov M. , Guffanti D. , Aldo Ianni  , Andrea Ianni  , Jany A. , Jeschke D. , Kobychev V. , Korga G. , Kumaran S. , Laubenstein M. , Litvinovich E. , Lombardi P. , Lomskaya I. , Ludhova L. , Lukyanchenko G. , Lukyanchenko L. , Machulin I. , Martyn J. , Meroni E. , Meyer M. , Miramonti L. , Misiaszek M. , Muratova V. , Neumair B. , Nieslony M. , Nugmanov R. , Oberauer L. , Orekhov V. , Ortica F. , Pallavicini M. , Papp L. , Pelicci L. , Penek Ö. , Pietrofaccia L. , Pilipenko N. , Pocar A. , Raikov G. , Ranalli M.T. , Ranucci G. , Razeto A. , Re A. , Redchuk M. , Romani A. , Rossi N. , Schönert S. , Semenov D. , Settanta G. , Skorokhvatov M. , Singhal A. , Smirnov O. , Sotnikov A. , Suvorov Y. , Tartaglia R. , Testera G. , Thurn J. , Unzhakov E. , Vishneva A. , Vogelaar R.B. , von Feilitzsch F. , Wojcik M. , Wonsak B. , Wurm M. , Zavatarelli S. , Zuber K. , Zuzel G.
Published: February 2022

Borexino is a 280t liquid scintillator detector at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. Its main goal is the precision spectroscopy of solar neutrinos down to energies of 0.19 MeV and for this task it features an unprecedented radio-purity and a high scintillation light yield. The solar neutrinos are measured by the elastic scattering off electrons which induce isotropically emitted scintillation photons as well as a sub-dominant number of Cherenkov photons that are detected by photomulitplier tubes. Here we present the first detection of sub-MeV solar neutrinos using their associated Cherenkov photons in a high light yield liquid scintillator detector. In Borexino electrons with E>0.16MeV produce Cherenkov photons, where the ratio of Cherenkov photons from the neutrino scattered electrons is estimated to be < 1% for all PMT hits, so a typical event by event direction reconstruction is not possible. Instead this analysis looks at the integrated signal of the PMT hits of all detected events by correlating the position of each hit PMT relative to the reconstructed position of the event and the well known position of the Sun. In this way it is possible to measure an angular distribution that shows the statistical contribution of Cherenkov photons from the solar neutrino recoil electrons. Using the Geant4-based Borexino Monte Carlo to produce the expected angular distribution for solar neutrinos and background we have measured

8643

−
2058

+2252

neutrino events out of 19904 total events for an energy region around the 7Be edge between 0.53 MeV and 0.74 MeV.
JUNO Detector Design & Status
Authors: Wang Zhimin
Published: February 2022

The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation liquid-scintillator reactor neutrino experiment under construction in Southern China. It is a multi-purpose experiment with a wide range of applications in neutrino physics, ranging from a neutrino mass ordering (NMO) determination, the detection of solar, geo-, atmospheric neutrinos, and Supernova neutrinos, to the measurement on particular oscillation parameters with sub-percentage precision. The JUNO central detector (CD) is designed to reach an energy resolution of 3% at 1MeV. The detector is being installed in a recently excavated experimental hall, 50 m wide and located under 700 m of granite overburden (1800 m.w.e.). The CD contains a 35.4-meter diameter acrylic vessel filled with 20-kt of LAB-based liquid scintillator, making it the largest liquid-scintillator detector of its kind in the world. The scintillation light will be read-out by 17612 20” photomultiplier tubes (PMTs) and 25600 3” PMTs, reaching a photocathode coverage higher than 75%. A water pool filled with ultrapure water equipped with 2,400 PMTs surrounds the CD; on top of the water pool, a 3-layer plastic scintillator tracker completes the JUNO veto system for cosmic muons detection. JUNO construction will be completed in 2022. This talk presents the detector design and status of the experiment.
KamLAND-Zen 800 Status and Prospect with the Artificial Intelligence Powered Analysis
Authors: Li Aobo
Published: February 2022

The discovery of neutrinoless double beta decay (0υββ) would shed light on the persistent puzzle surrounding the origin of neutrino mass and help explain the matter-dominated universe. KamLAND-Zen is one of the leading experiments searching for 0υββ. The first phase of the experiment, called KamLAND-Zen 400, set a world-leading limit on 0υββ lifetime. After the conclusion of KamLAND-Zen 400, a brand new mini-balloon with a larger volume and cleaner surface were instrumented to contain 745 kg of 136Xe. Since Jan. 2019, KamLAND-Zen 800 has started data-taking and aims to improve on the previous 0υββ result. A detailed study of the backgrounds in this new data will be presented along with a state-of-the-art approach for classifying backgrounds using a new algorithm called KamNet. The rejection power of KamNet does not rely on coincidence tagging and scales with hardware updates. With the help of KamNet, the 0υββ sensitivity of KamLAND-Zen 800 is significantly enhanced to a new summit.
Observation of CNO cycle solar neutrinos in Borexino
Authors: Penek Ö , Agostini M , Altenmüller K , Appel S , Atroshchenko V , Bagdasarian Z , Basilico D , Bellini G , Benziger J , Biondi R , Bravo D , Caccianiga B , Calaprice F , Caminata A , Cavalcante P , Chepurnov A , D’Angelo D , Davini S , Derbin A , Di Giacinto A , Di Marcello V , Ding X.F , Di Ludovico A , Di Noto L , Drachnev I , Formozov A , Franco D , Galbiati C , Ghiano C , Giammarchi M , Goretti A , Göttel A.S , Gromov M , Guffanti D , Ianni Aldo , Ianni Andrea , Jany A , Jeschke D , Kobychev V , Korga G , Kumaran S , Laubenstein M , Litvinovich E , Lombardi P , Lomskaya I , Ludhova L , Lukyanchenko G , Lukyanchenko L , Machulin I , Martyn J , Meroni E , Meyer M , Miramonti L , Misiaszek M , Muratova V , Neumair B , Nieslony M , Nugmanov R , Oberauer L , Orekhov V , Ortica F , Pallavicini M , Papp L , Pelicci L , Pietrofaccia L , Pilipenko N , Pocar A , Raikov G , Ranalli M.T , Ranucci G , Razeto A , Re A , Redchuk M , Romani A , Rossi N , Schønert S , Semenov D , Settanta G , Skorokhvatov M , Singhal A , Smirnov O , Sotnikov A , Suvorov Y , Tartaglia R , Testera G , Thurn J , Unzhakov E , Villante F , Vishneva A , Vogelaar R.B , von Feilitzsch F , Wojcik M , Wurm M , Zavatarelli S , Zuber K , Zuzel G
Published: February 2022

The Borexino detector, located at the Laboratori Nazionali del Gran Sasso in Italy, is a radiopure 280 ton liquid scintillator detector with a primary goal to measure low-energy solar neutrinos created in the core of the Sun. These neutrinos are a consequence of nuclear fusion reactions in the solar core where Hydrogen is burned into Helium and provide a direct probe of the energy production processes, namely the proton-proton (pp) chain and the Carbon-Nitrogen-Oxygen (CNO) cycle. The fusion of Hydrogen in the case of the CNO cycle, which is expected to contribute in the order of less than 1% to the total solar energy, is catalyzed by Carbon, Nitrogen, and Oxygen directly depending on the abundances of these elements in the solar core. The measurement of CNO neutrinos is challenging due to the high spectral correlation with the decay electrons of the background isotope 210Bi and the pep solar neutrino signal. The experimental achievement of thermal stabilization of the Borexino detector after mid 2016, has opened the possibility to develop a method to constrain the 210Bi rate through its decay daughter and α emitter 210Po which can be identified in Borexino with an efficiency close to 100 percent on an event-by-event basis. Moreover, the flux of pep neutrinos can be constrained precisely through a global analysis of solar neutrino data which is independent of the dataset used for the CNO analysis. This conference contribution is dedicated to the first experimental evidence of neutrinos produced in the CNO fusion cycle in the Sun which is at the same time the dominant energy production mechanism in heavier stars compared to the Sun.
Reactor antineutrino anomaly revisited circa 2021
Authors: Xin Z.
Published: February 2022

In our recent work [1], we study the status of the reactor antineutrino anomaly in light of new reactor flux conversion and summation models. We present a new improved calculation of the IBD yields of the standard Huber-Mueller (HM) model and those of the new models. We show that the reactor rates and the fuel evolution data are consistent with the predictions of the Kurchatov Institute (KI) conversion model and with those of the Estienne-Fallot (EF) summation model, leading to a plausible robust demise of the reactor antineutrino anomaly. We also show that the results of several goodness of fit tests favor the KI and EF models over other models under consideration.
Search for Supernova Relic Neutrinos at KamLAND
Authors: Obara S , Ieki S , Ishidoshiro K , Mitsui T , Watanabe H , Decowski M P
Published: February 2022

We report a search for electron antineutrinos at KamLAND with an 8.3−30.8 MeV energy range via the inverse beta decay. In 6.72 kton-yr of KamLAND data, we found 18 neutrino candidates and no significant excess over estimated backgrounds. From data interpretation, with the assumption of some supernova relic neutrino spectrum predictions, we give upper flux limits of 60−110 cm−2 s−1 (90% CL) in the analysis range and present a model-independent flux. These upper limits are the most stringent for 8−13 MeV region. We also improve on the upper probability limit of 8B solar neutrinos converting into antineutrinos via the Resonant Spin Flavor Precession with the neutrino magnetic moment. Besides, we could set limits on the annihilation cross-section for light dark matter pairs to neutrino pairs.
Short-Baseline neutrino oscillation searches with the ICARUS detector
Authors: Farnese Christian
Published: February 2022

The ICARUS collaboration employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratories studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions. ICARUS initially performed a sensitive search for LSND-like anomalous υ
e appearance in the CNGS beam constraining the allowed parameters to a narrow region around 1eV
2. After a significant overhauling phase at CERN, the T600 detector was installed at Fermilab and activated in 2020 in view of the forthcoming sensitive search for sterile neutrinos using the Booster beam within the Short Baseline Neutrino (SBN) program. During the initial commissioning phase ICARUS already collected the first neutrino events from the Booster Neutrino Beam and the NuMI off-axis. The proposed contribution will address ICARUS achievements, its status and plans for the new run at Fermilab.
Status of 48Ca double beta decay search in CANDLES
Authors: Minami Yuto , Fushimi Kenichi , Harada Takaaki , Hashimoto Akihiro , Hazama Ryuta , Hiraiwa Tasuku , Iga Tomoki , Iida Takashi , Kawashima Yusuke , Kishida Yumiko , Kishimoto Tadafumi , Matsuoka Kenji , Miyoshi Go , Muramatsu Yoshiki , Nakajima Kyohei , Ogawa Izumi , Rittirong Anawat , Sakai Toshiki , Sakaue Akitoshi , Suzuki Kohtaku , Takihira Yukichi , Tamagawa Yoichi , Tozawa Masashi , Umehara Saori , Yamamoto Asahi , Yoshida Sei , Yoshida Tomomi , Yoshioka Atsushi
Published: February 2022

We study a strategy to reduce veto-time in the search for neutrino-less double-beta decay (0υββ) with CANDLES-III system. We develop a new likelihood analysis and apply it to our new Run010 data. We show that we can increase the un-vetoed live-time by 11.8%. Thanks to this improvements, We expect to increase a limit on the life-time of 0υββ by a factor of three by analyzing both Run009 and Run010 data.
Study of tau neutrino production with nuclear emulsion at CERN-SPS
Authors: Vasina S.
Published: February 2022

The tau neutrino interaction cross-section was directly measured in the DONuT experiment but it suffers from a large systematic (∼50%) and statistical (∼30%) errors. The main source of the systematic error was due to poor knowledge of the tau neutrino flux. The DsTau experiment at CERN-SPS has been proposed to measure an inclusive differential cross-section of the Ds
production with a consecutive decay to tau lepton in p-A interactions, which is a main source of tau neutrinos in neutrino beams at accelerators. The search for Ds
→ τ → X decay is challenging due to milimetric range of Ds
and τ decay lengths and a small angle between them of the order of few mrad. Nevertheless a precise measurement is possible with the use of nuclear emulsion providing a sub-micron spatial resolution. The experiment is aiming to collect 2.3 × 108 proton interactions in the tungsten target, and to detect ∼ 1000 Ds
→ τ → X decays. DsTau successfully performed a pilot run in 2018 collecting ∼10% of the full data and was approved as NA65 in 2019. The results from the pilot run are presented in this paper and the prospect for physics runs in 2021–2022 are given.
Status of Super-Kamiokande Gadolinium project
Authors: Ikeda Motoyasu
Published: February 2022

Super-Kamiokande (SK) is the world’s largest underground water Cherenkov detector. The latest phase of operations began in July 2020 when, in order to improve neutron detection efficiency, about 13 tons of gadolinium (Gd) sulfate octahydrate was dissolved into SK’s pure water. Gd has a large thermal neutron capture cross section and emits visible gamma rays. This first loading marked the start of what is now called SK-Gd, and stable physics data taking has been ongoing since then. This presentation will focus on details of the first Gd loading and the detector status including detector calibrations. Also, the future plan and the prospect of observations with SK-Gd will be discussed.
The role of leptonic CPV phases in cLFV observables
Authors: Kriewald J , Abada A , Teixeira A M
Published: February 2022

In models where the Standard Model is extended by Majorana fermions, interference effects due to the presence of CP violating phases have been shown to play a crucial role in lepton number violating processes. However, important effects can also arise in lepton number conserving, but charged lepton flavour violating (cLFV) transitions and decays. Here we show that the presence of CP violating (Dirac and Majorana) phases can have a striking impact for the predicted rates of cLFV observables. We explore the interference effects in several cLFV observables, carrying for the first time a thorough analysis of the different observables and the implications for future observation. We discuss how the presence of leptonic CP violating phases might lead to a loss of correlation between observables (typically present in simple SM extensions via heavy sterile fermions), or even to the suppression of certain channels; these effects can be interpreted as suggestive of non-vanishing phases.
Dark matter Axion search with riNg Cavity Experiment DANCE: Design and development of auxiliary cavity for simultaneous resonance of linear polarizations
Authors: Fujimoto Hiroki , Oshima Yuka , Ando Masaki , Fujita Tomohiro , Michimura Yuta , Nagano Koji , Obata Ippei
Published: February 2022

Axion-like particles (ALPs) are undiscovered pseudo-scalar particles that are candidates for ultralight dark matter. ALPs interact with photons slightly and cause the rotational oscillation of linearly polarized light. Dark matter Axion search with riNg Cavity Experiment (DANCE) searches for ALP dark matter by amplifying the rotational oscillation with a bow-tie ring cavity. Simultaneous resonance of linear polarizations is necessary to amplify both the carrier field and the ALP signal, and to achieve the design sensitivity. The sensitivity of the current prototype experiment DANCE Act-1 is less than expectation by around three orders of magnitude due to the resonant frequency difference between s- and p-polarization in the bow-tie ring cavity. In order to tune the resonant frequency difference, the method of introducing an auxiliary cavity was proposed. We designed an auxiliary cavity that can cancel out the resonant frequency difference and realize simultaneous resonance, considering optical loss. We also confirmed that the sensitivity of DANCE Act-1 with the auxiliary cavity can reach the original sensitivity.
Measurement of cosmogenic neutron production in SK-Gd
Authors: Shinoki Masataka
Published: February 2022

The Super-Kamiokande-Gd (SK-Gd) experiment has started after adding the gadolinium (Gd) into ultra-pure water in the SK detector. SK-Gd dramatically improves the sensitivity to supernova relic neutrino searches by tagging neutrons. Cosmic-ray muons penetrating into the SK detector induce hadronic showers. Such muon often break oxygen nuclei in water and produce unstable radioactive isotopes and neutrons, which are major background sources for supernova relic neutrino searches. On the other hand, the cosmogenic neutrons produced by muons can be used for the detector calibration source. Since cosmic-ray muons penetrate into the SK detector continuously with the rate of 2 event/s, the cosmogenic neutrons can be used to monitor the stability and uniformity of the Gd concentration in water. In this proceeding, we report the progress of cosmogenic neutron measurement in SK-Gd.
Recent advancements of the experiment to search for 2K-capture in 124Xe using a Large Low-background Proportional Counter
Authors: Petrenko O.D. , Fedorets I.D. , Gangapshev A.M. , Gavrilyuk Y.M. , Kazalov V.V. , Kuzminov V.V. , Panasenko S.I. , Ratkevich S.S.
Published: February 2022

The new method for correcting the charge signal from the large proportional counter is proposed. The correction method makes possible to consider the loss of primary ionization electrons in the presence of weakly increasing microimpurities of electronegative gases during long-term measurements. It allows increasing the efficiency of the selection of useful events and thereby increasing the sensitivity to 2ν2K-decay in 124Xe at the level of 2 × 1022 y from over six years of measurements using a large proportional counter. Analysis of the calibration data, taking into account a new method for correcting the energy release in the detector, made it possible to register events from double K photoionization by a single photon.
Tunka-Grande scintillation array: resent results
Authors: Ivanova A L , Monkhoev R , Astapov I , Bezyazeekov P , Blank M , Bonvech E , Borodin A , Brückner M , Budnev N , Bulan A , Chernov D , Chiavassa A , Dyachok A , Gafarov A , Garmash A , Grebenyuk V , Gress E , Gress O , Gress T , Grinyuk A , Grishin O , Horns D , Ivanova A D , Kalmykov N , Kindin V , Kiryuhin S , Kokoulin R , Kompaniets K , Korosteleva E , Kozhin V , Kravchenko E , Kryukov A , Kuzmichev L , Lagutin A , Lavrova M , Lemeshev Y , Lubsandorzhiev B , Lubsandorzhiev N , Lukanov A , Lukyantsev D , Malakhov S , Mirgazov R , Mirzoyan R , Osipova E , Pakhorukov A , Pankov L , Pan A , Panov A , Petrukhin A , Poddubnyi I , Podgrudkov D , Poleschuk V , Ponomareva V , Popova E , Porelli A , Postnikov E , Prosin V , Ptuskin V , Pushnin A , Raikin R , Razumov A , Rubtsov G , Ryabov E , Sagan Y , Samoliga V , Satyshev A , Silaev A , Silaev A , Sidorenkov A , Sinegovsky S , Skurikhin A , Sokolov A , Sulakov V , Sveshnikova L , Tabolenko V , Tarashchansky B , Tkachev L , Tluczykont M , Tanaev A , Ternovoy M , Togoo R , Ushakov N , Vaidyanathan A , Volchugov P , Volkov N , Voronin D , Wischnewski R , Zagorodnikov A , Zhaglova A , Zhurov D , Yashin I
Published: February 2022

Objectives of the TAIGA Astrophysical complex include the study of the flux of charged cosmic rays and diffuse gamma rays with energies above 100 TeV. This complex is located in the Tunka Valley about 50 km from Lake Baikal at the site of the Tunka-133 Cherenkov facility. TAIGA includes the TAIGA-HiSCORE wide-angle Cherenkov array, the network of Imaging Atmospheric Cherenkov Telescopes (TAIGA-IACT), the Tunka-Grande and TAIGA-Muon scintillation arrays. In this work, we present the results of an analysis of the joint events of the Tunka-Grande scintillation array and TAIGA-HiSCORE and Tunka-133 Cherenkov facilities. The results verify sufficient accuracy of the scintillation experiment for the hybrid study of mass composition of cosmic rays and gamma-hadron separation.
Implementation of IceTop data in the IceCube Realtime Alert System
Authors: Amin Najia Moureen Binte
Published: February 2022

The IceCube Neutrino Observatory is a cubic-kilometer detector at the geographic South Pole searching for astrophysical neutrinos. The main background for astrophysical neutrinos is leptons produced by cosmic ray air showers: neutrinos from the northern hemisphere and muons from the southern hemisphere. These atmospheric backgrounds are reduced using a data-driven selection based on the observed event energy and arrival direction. An array of ice-Cherenkov tanks on the surface, IceTop, detects showers of secondary particles created in cosmic ray air showers. We will show that data from IceTop can be used to further reduce the background due to atmospheric muons, and by implementing this method, we vetoed three alert events.
Electromagnetic effects in elastic neutrino scattering on nucleons
Authors: Kouzakov Konstantin , Lazarev Fedor , Studenikin Alexander
Published: February 2022

We study the electromagnetic contribution to elastic neutrino-proton and neutrino-neutron scattering processes. The neutrino electromagnetic charge, magnetic, electric, and anapole form factors of both diagonal and transition types in the mass basis are taken into account in the present formalism. When treating the nucleon electromagnetic vertex, we take into account not only the charge and magnetic form factors of a nucleon, but also its electric and anapole form factors. We examine how the effects of the neutrino millicharge can be disentangled from those of the strange quark contributions to the nucleon’s weak neutral current form factors.
Cosmic activation of Cresst’s CaWO4 crystals
Authors: Kluck H , Angloher G , Benato G , Bento A , Bertolini A , Breier R , Bucci C , Canonica L , Addabbo A D’ , Lorenzo S Di , Einfalt L , Erb A , Feilitzsch F v. , Iachellini N Ferreiro , Fichtinger S , Fuchs D , Fuss A , Garai A , Ghete V M , Gorla P , Gupta S , Hauff D , Ješkovský M , Jochum J , Kaznacheeva M , Kinast A , Kraus H , Langenkamper A , Mancuso M , Marini L , Mokina V , Nilima A , Olmi M , Ortmann T , Pagliarone C , Palušová V , Pattavina L , Petricca F , Potzel W , Povinec P , Pröbst F , Pucci F , Reindl F , Rothe J , Schäffner K , Schieck J , Schmiedmayer D , Schönert S , Schwertner C , Stahlberg M , Stodolsky L , Strandhagen C , Strauss R , Usherov I , Wagner F , Willers M , Zema V
Published: February 2022

The CRESST experiment searches for dark matter induced nuclear recoils inside CaWO4 based cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. To identify reliably a potential signal, a precise understanding of its background budget is crucial. An important background category could be “cosmogenics”: radionuclides produced via interactions with cosmic rays, mainly during the crystal production at surface facilities. Albeit CaWO4 is a well-established calorimetric material, no systematic study of its susceptibility for cosmic activation existed so far. In this contribution, we will first report the exposure profile of CRESST’s in-house grown TUM93 crystal to cosmic rays. Then we will identify the most prominent cosmogenics via AcTIVIA calculations. Afterwards we discuss the expected background spectrum based on Geant4 simulations and compare it to measurements.
Dirac and Majorana neutrino oscillations in magnetized moving and polarized matter
Authors: Abdullaeva Umsalimat , Shakhov Vadim , Studenikin Alexander , Tsvirov Alexander
Published: February 2022

In the present paper we develop the quantum theory of neutrino spin and spin-flavour oscillations in moving magnetized matter with a special focus on the effects of matter polarization. We derive an effective neutrino evolution Hamiltonian and corresponding expressions for the neutrino oscillation probabilities. Both the case of Dirac and Majorana neutrinos are considered. From the comparison of the neutrino spin oscillation probabilities in the transversally moving matter for the Dirac and Majorana neutrinos it follows that the oscillation patterns is different for theses two cases. In particular, the conditions for the resonances in these two cases are realized at different densities of matter.
Prospects for searching new Double Beta Decay physics with KamLAND-Zen 800
Authors: Yuto Kamei
Published: February 2022

Two-neutrino double beta decay (2υββ) is a rare second-order weak radioactive decay process. It has been observed in neutrinoless double beta decay (0υββ) search experiments. Precise observation of 2υββ is essential to reduce the theoretical uncertainty in the calculation of nuclear matrix elements required to obtain the effective Majorana mass from a lifetime of 0υββ. Also, 2υββ itself is interesting because new physics could be hiding in the energy spectrum, such as for example, Majoron emission mode 0υββ and 2υββ with neutrino self-interaction. KamLAND-Zen 800 is an experiment to search for 0υββ of 136Xe with a large ultra-pure liquid scintillator detector, KamLAND. KamLAND-Zen 800 has been observing 745 kg of xenon gas at 91% enriched in 136Xe since 2019, providing a high statistics 2υββ decay sample. We describe the potential for new physics searches in 2υββ with KamLAND-Zen 800.
Searching for New Physics in two-neutrino double beta decay with CUPID
Authors: Armatol A , Armengaud E , Armstrong W , Augier C , Avignone F T , Azzolini O , Barabash A , Bari G , Barresi A , Baudin D , Bellini F , Benato G , Beretta M , Bergé L , Biassoni M , Billard J , Boldrini V , Branca A , Brofferio C , Bucci C , Camilleri J , Capelli S , Cappelli L , Cardani L , Carniti P , Casali N , Cazes A , Celi E , Chang C , Chapellier M , Charrier A , Chiesa D , Clemenza M , Colantoni I , Collamati F , Copello S , Cremonesi O , Creswick R J , Cruciani A , Addabbo A D’ , Imperio G D’ , Dafinei I , Danevich F A , de Combarieu M , Jesus M De , de Marcillac P , Dell’Oro S , Domizio S Di , Dompè V , Drobizhev A , Dumoulin L , Fantini G , Faverzani M , Ferri E , Ferri F , Ferroni F , Figueroa-Feliciano E , Formaggio J , Franceschi A , Fu C , Fu S , Fujikawa B K , Gascon J , Ghislandi S , Giachero A , Gironi L , Giuliani A , Gorla P , Gotti C , Gras P , Gros M , Gutierrez T D , Han K , Hansen E V , Heeger K M , Helis D L , Huang H Z , Huang R G , Imbert L , Johnston J , Juillard A , Karapetrov G , Keppel G , Khalife H , Kobychev V V , Kotila J , Kolomensky Yu G , Konovalov S , Liu Y , Loaiza P , Ma L , Madhukuttan M , Mancarella F , Mariam R , Marini L , Marnieros S , Martinez M , Maruyama R H , Mauri B , Mayer D , Mei Y , Milana S , Misiak D , Napolitano T , Nastasi M , Navick X F , Nikkel J , Nipoti R , Nisi S , Nones C , Norman E B , Novosad V , Nutini I , O’Donnell T , Olivieri E , Oriol C , Ouellet J L , Pagan S , Pagliarone C , Pagnanini L , Pari P , Pattavina L , Paul B , Pavan M , Peng H , Pessina G , Pettinacci V , Pira C , Pirro S , Poda D V , Polakovic T , Polischuk O G , Pozzi S , Previtali E , Puiu A , Quitadamo S , Ressa A , Rizzoli R , Rosenfeld C , Rusconi C , Sanglard V , Scarpaci J , Schmidt B , Sharma V , Shlegel V , Singh V , Sisti M , Speller D , Surukuchi P T , Taffarello L , Tellier O , Tomei C , Tretyak V I , Tsymbaliuk A , Velazquez M , Vetter K J , Wagaarachchi S L , Wang G , Wang L , Welliver B , Wilson J , Wilson K , Winslow L A , Xue M , Yan L , Yang J , Yefremenko V , Yumatov V , Zarytskyy M M , Zhang J , Zolotarova A , Zucchelli S
Published: February 2022

In the past few years, attention has been drawn to the fact that a precision analysis of two-neutrino double beta decay (2υββ) allows the study of interesting physics cases like the emission of Majoron bosons and possible Lorentz symmetry violation. These processes modify the summed-energy distribution of the two electrons emitted in 2υββ. CUPID is a next-generation experiment aiming to exploit 100Mo-enriched scintillating Li2MoO4 crystals, operating as cryogenic calorimeters. Given the relatively fast half-life of 100Mo 2υββ and the large exposure that can be reached by CUPID, we expect to measure with very high precision the 100Mo 2υββ spectrum shape, reaching great sensitivities in the search for distortions induced by the physics beyond the Standard Model. In this contribution, we present the CUPID exclusion sensitivity for such New Physics processes, as well as the preliminary projected background of CUPID.
Role of Charged Scalar in Icecube and NSI
Authors: Sadhukhan Soumya
Published: February 2022

We study a variant of neutrinophilic two-Higgs doublets model to explain excess neutrino events in the 1 – 3 PeV energy bins at the IceCube. This is arranged by a charged scalar in the model, through a Glashow-like resonance. The same charged scalar can generate sizeable non standard interactions (NSIs) of the neutrinos. We perform a combined analysis of the latest IceCube observations, taking into account constraints from the neutrino and LEP experiments, to explore the parameter space leading to sizeable NSIs.
Setting limits on heavy neutral leptons using the neutrino CC events at the DUNE near detector
Authors: Carbajal S , Gago A M
Published: February 2022

We study the impact of production of heavy neutral leptons (HNL) from meson decays on the number of neutrino charged current (CC) events that will be detected at the DUNE ND LArTPC. If the masses of the HNLs are below the kaon mass, then a decreased number of CC events at the DUNE LArTPC will be observed. This decrease is used to set upper limits on the mixing parameters of the HNLs. We find that these limits are at least 1 order of magnitude better than the current ones for masses below 1 MeV for a year of operation in neutrino mode.
Development and performance of a fast timing micro-pattern gaseous detector (FTM) for future collider experiments and medical diagnostics
Authors: Maggi M. , Pellecchia A. , Ranieri A. , Roskas C. , Sharma A. , Tytgat M. , Vai I. , Verwilligen P.
Published: February 2022

The fast timing MPGD is a micro-pattern gaseous detector conceived for achieving sub-nanosecond time resolution while maintaining the ability to instrument large areas in high-rate environments; applications of such technology are perspected in high-energy physics experiments at future colliders and medical diagnostics with time-of-flight methods. The work presented is a set of systematic studies carried on an FTM prototype on the performance of GEM foils coated with resistive DLC films, whose development is essential for the FTM operation. The resistive foil performance has been tested with several gas mixtures and compared with the results obtained on conductive foils. The results show that the performance of the FTM is presently limited by the technology of manufacturing of DLC-coated GEM foils, with high gains reachable exclusively in isobutane-based mixtures.
Bioinspired dynamic soaring simulation system with distributed pressure sensors
Authors: Wang Danxiang , Xie Fangfang , Lu Yufeng , Ji Tingwei , Du Changping , Zheng Yao
Published: February 2022

Inspired by the albatross, this paper presents the construction of a dynamic soaring simulation system with distributed pressure sensors. The advantage of our system lies in harvesting energy from the wind shear layer and estimating the wind information using a pressure-based sensor system. Specifically, the dynamic soaring simulation system contains an offline training stage and an online estimation and control stage. In the offline training stage, computational fluid dynamics simulations are conducted and used as the data source. A surrogate model is established to correlate the local flow conditions and the surface pressure at optimal sensor positions. In the online estimation and control stage, through sensing the pressure information, the real-time wind velocity and wind gradient are estimated by the surrogate model trained in the offline stage. Moreover, wind information is adopted in the simulation of dynamic soaring control. In this study, the simulation system was applied to linear and circular path-following tasks. It was found that the dynamic soaring simulation system with distributed pressure sensors provides an acceptable estimation of wind velocity and wind gradient with a certain time delay caused by numerical differentiation.
Empowering farmer group to increase rice productivity for promoting food security: a case study of the implementation of jarwo super technology in Lebak District, Banten, Indonesia
Authors: Kusumawati S , Kurniawati S , Saryoko A , Hidayah I
Published: February 2022

Rice is the number one staple food crop, being eaten by almost all the population in Indonesia. Jajar Legowo Super (Jarwo Super) technology as an approach to improve rice productivity consists of various components of technologies. This study attempts to demonstrate the importance of farmer group empowerment and the implementation of Jarwo Super technology as a strategy to improve rice productivity. A two-year study from 2019 – 2020 was conducted in Cibadak Sub-district, Lebak District, Banten, Indonesia. We combined specific components of rice technology in Jarwo Super, and implemented it in the farmers’ fields. Scheduled assistance through farmer field school (FFS) and field inspections were regularly conducted. The individual farmers’ performance in the implementation of technology and their participation in the FFS were evaluated. Our study showed that the implementation of Jarwo Super significantly improved rice productivity by 34.7% and 35.5% in 2019 and 2020, respectively, as compared to that of regional productivity. The yield performances were highly correlated with both the components of technology as well as farmers’ participation in FFS. We concluded that intensive and continued assisting through extension activities is a key point in delivering technologies to improve rice productivity for better food security.
Chemical properties of acid soil after amelioration of dolomite, coal, and microbes
Authors: Firnia D , Rohmawati I
Published: February 2022

Soil acidity and issues with aluminum (Al) toxicity are typically limiting concerns for agricultural soil utilization. Liming can be used to solve problems with acidic soils. Another option for dealing with acid soil problems is to use coal enriched with sulfate-reduced bacteria (SRB) or Acidithiobacillus ferrooxidans (AF). In a sustainable agriculture system, including coal enriched with SRB or AF into organic fertilizer might increase added value as a source of organic material for plantations. The goal of this research was to see if adding an ameliorant, microbial, or ameliorant enriched microbial to organic fertilizer can boost the added value as a source of organic material for plantations in a sustainable agriculture system. Two acid soils (Ultisols) were investigated, with variances in exchangeable Al concentration. The results showed that the use of a dolomite ameliorant or dolomite enriched AF ICBB 8789 raised pH, Ca, and Mg in the soil. In the soils of Jasinga and Lebak, the treatment of coal enriched with AF ICBB 8789 was more effective in increasing the CEC value. In acid soil from Jasinga West Java and Lebak Banten, a coal or lime ameliorant enriched with SRB could increase the availability of P. In a sustainable agriculture system, coal or coal enriched SRB or AF can potentially increase added value as a source of organic material for agricultures
Potential of Beef Cattle Breeding by Output Value-Based in Bayang Utara District, Pesisir Selatan Regency, West Sumatera
Authors: Rastosari Adisti , Hellyward James , Afriani Tinda , Rusdimansyah  , Asyraf Mylaufa
Published: February 2022

This study aimed to determine the potential of beef cattle breeding in Bayang Utara District, Pesisir Selatan Regency, West Sumatera. The material in this study included 135 farmers as respondents and 256 beef cattle. This research was descriptive-analytic using survey method with census data collection technique. The data obtained were analyzed descriptively. The results showed the natural increase (NI) of beef cattle as a whole was 13.28% with the NI value of each breed of beef cattle were 50.00%, 19.23%, 16.67%, 13.01%, and 9.27% for Limousin Crossbred cattle, PO cattle, Brahman Cross cattle, Simmental Crossbred cattle, and Pesisir cattle, respectively. The net replacement rate (NRR) of male and female cattle is 75.18% and 174.76%, respectively. The estimated output of beef cattle was 13.28% of the population consisting of the remaining replacement male -1.39% and female 3.88% as well as 5.6% male and 5.19% rejected cattle with the output value of each breed beef cattle were 50.00% or 1 head for Limousin Crossbred, 16.67% or 5 heads for Brahman Cross cattle, 19.23% or 5 heads for PO cattle, 13.00% or 16 heads for Simmental Crossbred and 9.27% or 7 heads for Pesisir cattle. The estimated output value of beef cattle as a whole where beef cattle can be removed was 13.28% or 34 heads. The estimated value of livestock output could be used to consider the potential development of livestock breeding in an area so that there is a sustainable breeding program.