bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quark matter properties and fluctuations of conserved charges in (2+1)-flavored quark model *
Authors: Chahal Nisha , Dutt Suneel , Kumar Arvind 
Published: February 2022

Abstract
In this study, the susceptibilities of conserved charges, baryon number, charge number, and strangeness number at zero and low values of chemical potential are presented. Taylor series expansion was used to obtain results for the three-flavor Polyakov quark meson (PQM) model and the Polyakov loop extended chiral quark mean-field (PCQMF) model. Mean-field approximation was used to study quark matter with the inclusion of the isospin chemical potential, as well as the vector interactions. The effects of isospin chemical potential and vector-interactions on phase diagrams were analyzed. A comparative analysis of the two models was completed. Fluctuations of the conserved charges were enhanced in the transition temperature regime and hence provided information about the critical end point (CEP). Susceptibilities of conserved quantities were calculated by using the Taylor series method. Enhancement of fluctuations in the transition temperature neighborhood provided a clear signature of a quantum chromodynamics (QCD) critical-point.
Dark matter from a complex scalar singlet and the role of dark CP
Authors: Faubel Carlos , Coito Leonardo , Herrero-García Juan , Santamaria Arcadi 
Published: February 2022

Abstract
A complex scalar singlet could provide a pseudo-scalar dark matter candidate, whose stability is guaranteed by a discrete symmetry: dark CP. The scalar singlet is also charged under a global U(1) symmetry, which is broken both explicitly and spontaneously. We analyze the phenomenology of different models with just one explicit symmetry breaking term and we also consider the case with more than one symmetry breaking term. Finally, we discuss the possibility that the explicit symmetry breaking term is much smaller than the symmetry breaking scale, leading to a pseudo-Nambu-Goldstone boson as a DM candidate.2
Machine-learning techniques applied to three-year exposure of ANAIS–112
Authors: Coarasa I , Apilluelo J , Amaré J , Cebrián S , Cintas D , García E , Martínez M , Oliván M A , Ortigoza Y , de Solórzano A Ortiz , Puimedón J , Salinas A , Sarsa M L , Villar P 
Published: February 2022

Abstract
ANAIS is a direct dark matter detection experiment aiming at the confirmation or refutation of the DAMA/LIBRA positive annual modulation signal in the low energy detection rate, using the same target and technique. ANAIS–112, located at the Canfranc Underground Laboratory in Spain, is operating an array of 3×3 ultrapure NaI(Tl) crystals with a total mass of 112.5 kg since August 2017. The trigger rate in the region of interest (1-6 keV) is dominated by non-bulk scintillation events. In order to discriminate these noise events from bulk scintillation events, robust filtering protocols have been developed. Although this filtering procedure works very well above 2 keV, the measured rate from 1 to 2 keV is about 50% higher than expected according to our background model, and we cannot discard non-bulk scintillation events as responsible of that excess. In order to improve the rejection of noise events, a Boosted Decision Tree has been developed and applied. With this new PMT-related noise rejection algorithm, the ANAIS–112 background between 1 and 2 keV is reduced by almost 30%, leading to an increase in sensitivity to the annual modulation signal. The reanalysis of the three years of ANAIS–112 data with this technique is also presented.
Implications of non-galactic dark matter for sub-GeV direct detection searches
Authors: Herrera Gonzalo , Ibarra Alejandro 
Published: February 2022

Abstract
A fraction of the dark matter in the solar neighborhood might be composed of non-galactic particles with speeds larger than the escape velocity of the Milky Way. The non-galactic dark matter flux would enhance the sensitivity of direct detection experiments, due to the larger momentum transfer to the target. In this contribution, we first summarize our current knowledge of the dark matter distribution outside the Milky Way, we then review the modelling of the non-galactic dark matter flux at the Solar System, and we finally assess its impact on sub-GeV direct detection experiments searching for both nuclear and electron recoils.
Perspectives for anti deuteron search in cosmic rays with an helium calorimeter
Authors: Nozzoli Francesco , Iuppa Roberto , Ricci Ester , Zuccon Paolo 
Published: February 2022

Abstract
The observation of sub-GeV antideuteron in the cosmic ray flux could be a very strong signature of dark matter annihilation in our galaxy. The goal of the Anti Deuteron Helium Detector (ADHD) project is to study the signatures offered by an high pressure Helium calorimeter for the identification of antideuterons in space. The performance of an high pressure (200 bar) Helium scintillator prototype, capable of fast timing, will be shown.
Multi-messenger lifetime constraints on heavy decaying dark matter
Authors: Hajjar Rasmi 
Published: February 2022

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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.