bluuebunny/crossref_metadata_2025_split huggingface dataset:
Solar and geoneutrinos
Authors: Ludhova L , 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 , Giacinto A Di , Marcello V Di , Ding X.F , Ludovico A Di , Noto L Di , 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 , 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 , Villante F , Vishneva A , Vogelaar R.B , Feilitzsch F von , Wojcik M , Wurm M , Zavatarelli S , Zuber K , Zuzel G 
Published: February 2022

Abstract
Thanks to the progress of neutrino physics, today we are able of exploiting neutrinos as a tool to study astrophysical objects. The latter in turn serve as unique sources of elusive neutrinos, which fundamental properties are still to be understood. This contribution attempts to summarize the latest results obtained by measuring neutrinos emitted from the Sun and geoneutrinos produced in radioactive decays inside the Earth, with a particular focus on a recent discovery of the CNO-cycle solar neutrinos by Borexino. Comprehensive measurement of the pp-chain solar neutrinos and the first directional detection of sub-MeV solar neutrinos by Borexino, the updated 8B solar neutrino results of Super-Kamiokande, as well as the latest Borexino and KamLAND geoneutrino measurements are also discussed.
Cosmological constraints on heavy sterile neutrinos
Authors: Mastrototaro L 
Published: February 2022

Abstract
We consider heavy sterile neutrinos νs
, with mass in the range 10 MeV ∼ ms
∼ mπ
∼ 135 MeV, thermally produced in the early universe and freezing out after the QCD phase transition. The existence of these neutrinos may alter the value of the effective number of neutrino species N
eff, measured by the cosmic microwave background (CMB), and the 4He production during the BBN. We provide a detailed account of the solution of the relevant Boltzmann equations and we identify the parameter space constrained by current Planck satellite data and forecast the parameter space probed by future Stage-4 ground-based CMB (CMB-S4) observations.
Neutron-antineutron oscillations as a probe of baryogenesis
Authors: Fridell Kåre , Harz Julia , Hati Chandan 
Published: February 2022

Abstract
A signal of neutron-antineutron (

n
−

n
¯

) oscillations at experiments like the Deep Underground Neutrino Experiment or the European Spallation Source, would directly imply baryon number violation and will point towards physics beyond the Standard Model. The discovery of such a signal would have important implications for baryogenesis mechanisms in the early Universe, which can explain the observed baryon asymmetry of the Universe today. Here we discuss how an observed rate for

n
−

n
¯

oscillations can directly be correlated with the washout of baryon asymmetry in the early Universe and therefore, can probe high- and low-scale baryogenesis scenarios in synergy with collider searches.
A Model-Independent Radio Telescope Dark Matter Search
Authors: Keller A , O’Brien S , Kamdar A , Rapidis N , Leder A F , van Bibber K 
Published: February 2022

Abstract
A novel search technique for ultralight dark matter has been developed and initially carried out over a limited range of frequency in L-band, utilizing the recent Breakthrough Listen public data release of three years of observation with the Green Bank Telescope. The search concept depends only on the assumption of decay or annihilation of virialized dark matter leading to a quasi-monochromatic radio line, and additionally that the frequency and intensity of the line be consistent with very general expected properties of the phase space of our Milky Way halo. Specifically, the search selects for a line which exhibits a Doppler shift with position according to the solar motion through a static galactic halo, and similarly varies in intensity with position with respect to the halo profile. The analysis of the full L-, S-, C- and X-band dataset by this method is currently underway.
Combined Dark Matter searches from dwarf spheroidal galaxies observations by Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS
Authors: Kerszberg Daniel , Armand Céline , Charles Eric , Mauro Mattia di , Giuri Chiara , Harding J. Patrick , Miener Tjark , Moulin Emmanuel , Oakes Louise , Poireau Vincent , Pueschel Elisa , Rico Javier , Rinchiuso Lucia , Salazar-Gallegos Daniel , Tollefson Kirsten , Zitzer Benjamin 
Published: February 2022

Abstract
Dwarf spheroidal galaxies (dSphs) are ideal targets for Dark Matter (DM) indirect searches due to their high DM content and their negligible expected astrophysical background. In this presentation, we report on the combined analysis of the observations of 20 dSphs by Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS collaborations in the search for DM, focusing on the Weakly Interacting Massive Particles (WIMPs) scenario. The combined analysis allows us to maximize the sensitivity by combining individual data sets from all five experiments for which the energy ranges of the search overlap. New constraints, spanning a range of DM masses from 5 GeV to 100 TeV, on the velocity-weighted cross section for DM self annihilation will be presented.
The dark-PMT: a novel directional light Dark Matter detector based on vertically-aligned carbon nanotubes
Authors: Pandolfi F , Apponi A , Cavoto G , Mariani C , Rago I , Ruocco A 
Published: February 2022

Abstract
We present the ‘dark-PMT’, a novel detector concept based around a target made of vertically-aligned carbon nanotubes. The detector is sensitive to electron recoils induced by sub-GeV dark matter, and is expected to have directional sensitivity and to be unaffected by thermal noise, even at room temperature. The key feature is that nanotubes are made of graphene, which is a two-dimensional material: therefore, if a dark matter particle transfers enough energy to an electron in the carbon lattice to overcome the work function (4.7 eV), the electron will be ejected directly into the vacuum. Because of the strong density anisotropy of nanotubes, the electrons will be capable of leaving the target, without being reabsorbed, if travelling in the direction of the tube axes. The electrons will then be accelerated, and reach an energy of 5 keV before hitting an electron sensor. We report on the most recent advancements towards the construction of a dark-PMT: a novel, state-of-the-art facility for nanotube synthesis has been recently installed in Rome, and it is being used to produce high-quality nanotubes; and detailed characterizations of silicon sensors with keV electrons have been performed.
Probing dark matter-cosmic ray electron interactions with circular polarisation of photons
Authors: Cermeño Marina 
Published: February 2022

Abstract
Conventional indirect dark matter (DM) searches look for an excess in the electromagnetic emission from the sky that cannot be attributed to known astrophysical sources, but its polarisation has not been explored to date. In this proceeding, I argue that photon polarisation is an important feature to understand new physics interactions. Circular polarisation can be generated from Beyond the Standard Model interactions if they violate parity and there is an asymmetry in the number density of the initial state particles which participate in the interaction. I consider a simplified model for fermionic (Majorana) DM and study the circularly polarised gamma rays from DM cosmic ray electron interactions. I study the differential flux of positive and negative polarised photons from the Galactic Centre and show that the degree of circular polarization can reach up to 90%. Finally, I discuss the detection prospects of this signal in future experiments.
The ASTAROTH Project: enhanced low-energy sensitivity to Dark Matter annual modulation
Authors: Zani A. , Alessandria F. , Andreani A. , Castoldi A. , Coelli S. , Cortis D. , D’Angelo D. , Carlo G. Di , Frontini L. , Gallice N. , Ghisetti M. , Guazzoni C. , Liberali V. , Monti M. , Orlandi D. , Pasini A. , Pedrini D. , Prioli M. , Sorbi M. , Stabile A. , Statera M. 
Published: February 2022

Abstract
ASTAROTH is a novel R&D project which aims at improving the physics reach of future direct dark matter detection experiments based on NaI(Tl) scintillating crystals. There is a strong need to test the long standing DAMA positive observation of an annual modulation that could be due to Dark Matter (DM), with the same target material and in a model independent way. ASTAROTH aim is the enhancement of the sensitivity to the annual modulation signal, compared with present technology, by lowering the detection energy threshold in order to observe sub-keV recoils for the first time. This can be achieved by reading the scintillation light from the NaI(Tl) crystals with arrays of Silicon PhotoMultipliers (SiPM), and placing the detectors in a cryogenic environment. SiPMs feature lower dark noise than Photomultiplier Tubes (PMTs) at T < 150 K and allow for higher light collection. The cooling medium is liquid Argon, as it is an excellent scintillator that can be instrumented to act as a veto against several backgrounds.
Here we present the status of the ASTAROTH project, introducing the innovative design of the detector chamber that will be used for the demonstration of the technology. Then, we will show the preliminary results of our first ever measurements performed on a single NaI(Tl) crystal read out by one SiPM array in a cryogenic set-up cooled with liquid nitrogen.
Studying dark matter with MadDM: lines and loops
Authors: Massaro D. , Arina C. , Heisig J. , Maltoni F. , Mattelaer O. 
Published: February 2022

Abstract
Automated tools for the computation of amplitudes and cross sections have become the backbone of phenomenological studies beyond the standard model. We present the latest developments in MadDM, a calculator of dark-matter observables based on MadGraph5_aMC@NLO. The new version enables the fully automated computation of loop-induced annihilation processes, relevant for indirect detection of dark matter. Of particular interest is the direct annihilation into photons, γγ, γX. These processes lead to monochromatic gamma-ray lines that are smoking-gun signatures for dark-matter annihilation in our Galaxy. MadDM computes the predictions for the expected photon fluxes near Earth and derives constraints from the gamma-ray line searches by Fermi-LAT and HESS. As an application, we present the implications for the parameter space of the Inert Doublet Model.
Environmental noises in current and future gravitational-wave detectors
Authors: Badaracco Francesca 
Published: February 2022

Abstract
Gravitational–wave (GW) detectors are very sensitive instruments that suffer from a huge number of noises. If we aim to observe gravitational waves with earthbound detectors, we need to take care of every source that can prevent the observation. Seismic noise poses a huge challenge to the sensitivity in the the low-frequency band and it is tackled with suspensions and active controls. The low–frequency band can also be threatened by the so–called Newtonian noise, generated by the fluctuations of the gravity field. If this has not been a problem in the first generation gravitational-wave detectors, it will be so in the next runs and especially in the third–generation detectors, like the Einstein Telescope. We need then to be prepared to suppress as much as possible these noises, otherwise they might become the last wall for the sensitivity of our detectors. This manuscript will explore environmental noises with a particular detail on Newtonian and seismic noise and the techniques that we can employ to reduce their effects.
Constraining positron emission from pulsar populations with AMS-02 data
Authors: Orusa Luca , Manconi Silvia , Donato Fiorenza , Mauro Mattia Di 
Published: February 2022

Abstract
The cosmic-ray flux of positrons is measured with high precision by the space-borne particle spectrometer AMS-02. The hypothesis that pulsar wind nebulae (PWNe) can significantly contribute to the excess of the positron (e+) cosmic-ray flux has been consolidated after the observation of a γ-ray emission at TeV energies of a few degree size around Geminga and Monogem PWNe. In this work we undertake massive simulations of galactic pulsars populations, adopting different distributions for their position in the Galaxy, intrinsic physical properties, pair emission models, in order to overcome the incompleteness of the ATNF catalogue. We fit the e
+ AMS-02 data together with a secondary component due to collisions of primary cosmic rays with the interstellar medium. We find that several mock galaxies have a pulsar population able to explain the observed e+ flux, typically by few, bright sources. We determine the physical parameters of the pulsars dominating the e
+ flux, and assess the impact of different assumptions on radial distributions, spin-down properties, Galactic propagation scenarios and e
+ emission time.
Searching for High-Energy Neutrinos from Ultra-Luminous Infrared Galaxies with IceCube
Authors: Correa Pablo 
Published: February 2022

Abstract
This work presents an IceCube search for high-energy neutrinos from Ultra-Luminous Infrared Galaxies (ULIRGs). ULIRGs are the most luminous infrared objects in the sky, with infrared luminosities exceeding 1012 solar luminosities. They are mainly powered by starbursts that exhibit star-formation rates larger than 100 solar masses per year. In addition, an active galactic nucleus (AGN) can also contribute significantly to the ULIRG luminosity output. The acceleration of hadrons, and consequently the production of neutrinos, can occur both in starburst and AGN environments. As such, ULIRGs form a source population that could be responsible for a significant fraction of the diffuse neutrino flux observed by IceCube. In this study we perform a stacking analysis on a representative sample of 75 ULIRGs with redshift z ≤ 0.13 using 7.5 years of IceCube data. We find no evidence for astrophysical neutrinos correlated with our selection of ULIRGs. We therefore compute upper limits on the contribution of the ULIRG source population to the diffuse neutrino observations, and also use these limits to constrain model predictions.
Update on the characterisation of the pGCT, a prototype of 4m dual-mirror Cherenkov Telescope
Authors: Rebert E. , Dournaux J.L. , Fasola G. , Horville D. , Sol H. , Amans J.P. , de Frondat F. , Huet J.M. , Laporte P. , Zech A. 
Published: February 2022

Abstract
The Gamma-ray Cherenkov Telescope prototype (pGCT) is a prototype of an Imaging Atmospheric Cherenkov Telescope, developed as Small-Sized Telescope (SST) of 4m during the preparation of the Cherenkov Telescope Array (CTA). Based on a Schwarzschild-Couder dual-mirror optical design aiming to provide an optimised Point Spread Function (PSF) on a wide field, it had its first Cherenkov light on the Meudon site of the Observatoire de Paris in 2015. Since the decision of CTA to harmonize its future SSTs, the pGCT instrument and the experience gained with its development are now used by the Observatoire de Paris team to provide a test bench for Cherenkov astronomy and a pedagogical tool for educational purposes in Meudon. This paper briefly describes the design of the pGCT and presents the latest advances in the optics of the prototype and its characterisation, directly related to the implementation of new high-quality metallic mirrors carried out since 2020.
Dense neutrino oscillations : beyond two flavor
Authors: Chakraborty Madhurima 
Published: February 2022

Abstract
In a dense supernova environment, neutrinos can undergo flavor conversions known as the collective oscillations. These self induced neutrino flavor conversions (collective oscillations) are almost exclusively studied in the standard two flavor scenario. We study these oscillations in the complete three flavor scenario. The ‘fast’ conversions are fascinating distinctions of the dense neutrino systems. In the fast modes the collective oscillation dynamics are independent of the neutrino mass, growing at the scale of the large neutrino-neutrino interaction strength (105 km−1 ) of the dense core. This is extremely fast, as compared to the usual ‘slow’ collective modes driven by much smaller vacuum oscillation frequencies (100 km−1). We perform the first non-linear simulations of fast conversions in the presence of three neutrino flavors which is motivated from the recent supernova simulations with muon production. We relax the standard

ν

μ
,
τ

=

ν
¯

μ
,
τ

(two-flavor) assumption. Our results show the significance of muon and tau lepton number angular distributions, together with the traditional electron lepton number ones and thus explain the need for a complete three flavor analysis.
JUNO Non-oscillation Physics
Authors: Settanta Giulio 
Published: February 2022

Abstract
The JUNO observatory, a 20 kt liquid scintillator detector to be completed in 2021 in China, belongs to the next-generation of neutrino detectors, which share the common features of having a multi-ton scale and an energy resolution at unprecedented levels. Beside the ambitious goal of neutrino mass ordering determination, the JUNO Collaboration plans also to perform a wide series of other measurements in the neutrino and astroparticle fields, rare processes and searches for new physics. The detector characteristics will allow the detection of neutrinos from many sources, like supernovae, the Sun, atmospheric and geoneutrinos. Other potential studies accessible to JUNO include the search for exotic processes, such as nucleon decays, Dark Matter and magnetic monopoles interactions, light sterile neutrinos production. This work reviews the physics potential of JUNO about non-reactor neutrino sources, highlighting the unique contributions that the experiment will give to the various fields in the forthcoming years.
Low-energy reactor neutrino physics with the CONNIE experiment
Authors: Nasteva Irina 
Published: February 2022

Abstract
The Coherent Neutrino-Nucleus Interaction Experiment (CONNIE) uses fully depleted high-resistivity CCDs (charge coupled devices) with the aim of detecting the coherent elastic scattering of reactor antineutrinos off silicon nuclei and probing physics beyond the Standard Model. The analysis of the 2016‖2018 data allowed us to set an upper limit at 95% confidence level on the coherent scattering rate, which was used to place stringent constraints on simplified extensions of the Standard Model with light scalar and vector mediators. In 2019, the experiment operated with an improved readout and a lower energy threshold of 50 eV. We present the performance of the CONNIE experiment, new results of the analysis of 2019 data, and the recent update of the detector with skipper CCDs.
Direct measurement of topological information for Cherenkov lights using HUNI-ZICOS detector
Authors: Yoshiyuki Fukuda , Shigetaka Moriyama , Katsuki Hiraide , Izumi Ogawa , Takahiro Gunji , Ryohei Hayami , Satoru Tsukada , Shunsuke Kurosawa 
Published: February 2022

Abstract
The topological information of Cherenkov light emitted from low energy electron was directly measured by HUNI-ZICOS detector. A 1.484 MeV electron with fixed direction to the center of hemispherical surface of the detector was generated by Compton back scattering with 100 degree from 88Y 1.836 MeV gamma. The observed averaged angle of Cherenkov light emitted from this electron was clustered around 40 degree assuming the vertex position to be at the center of truncated icosahedron photomultiplier jig. It was not Cherenkov angle around 47 degree as obtained by old simulation and the vertex to be the center of light yield for hitted photomultiplier. According to the HUNI-ZICOS simulation, the averaged angle of Cherenkov light was also clustered around 40 degree. On the other hands, the simulated averaged angle of scintillation was clustered around 49 degree, which is consistent with the averaged value of angle between the direction to center of hemisphere surface and each photomultiplier from the center of the jig. The obtained hitmap seemed to have same non flat structure as that of simulation due to Cherenkov ring. This is an evidence that Cherenkov lights emitted from 1.484 MeV electron should really have their topology. Therefore, we concluded that we will be able to reduce 208Tl background using the averaged angle for 96 Zr neutrinoless double beta decay search.
GERDA: Final Results and Physics Beyond Neutrinoless Double-Beta Decay
Authors: Krause P. 
Published: February 2022

Abstract
The GERDA experiment searched for the lepton number violating neutrinoless double-beta 0υββ decay of 76 Ge. Observation of this decay would provide answers to fundamental problems in particle physics and cosmology, including the origin of neutrino masses and baryon asymmetry in the universe. The GERDA experiment achieved the most stringent lower limit on the half-life of the 0υββ decay of 1.8 • 1026 yr at 90% C.L. (which coincides with the sensitivity) by operating high-purity germanium (HPGe) detectors enriched in 76Ge submerged in liquid argon (LAr). The collaboration could achieve this breakthrough by reducing the background event rate to 5.2 • 10–4 counts/(keV kg yr) at the end-point energy. This unprecedented background index could be achieved by developing unique technologies like utilizing the scintillation light of the LAr to reject efficiently background events that deposit energy simultaneously in the HPGe detectors and in LAr, and the pulse shape discrimination which exploits specific event topologies of backgrounds and signal candidates. Due to the ultra-low background approach the GERDA data is also suited for other rare event searches beyond the 0υββ decay like the search for super-WIMPs.
Neutrino NSI effects on future solar sector measurements
Authors: Molina Sedgwick S , Martínez-Miravé P , Tórtola M 
Published: February 2022

Abstract
The next-generation experiment JUNO will determine the solar oscillation parameters - sin2
θ
12 and

Δ

m

21

2

- with great accuracy, in addition to measuring sin2
θ
13,

Δ

m

31

2

and the mass ordering. In parallel, the continued study of solar neutrinos at Hyper-Kamiokande will provide complementary measurements in the solar sector. Here we address the expected sensitivity to non-universal and flavour-changing non-standard interactions (NSI) with d-type quarks from the combination of these two future neutrino experiments. We also show the robustness of the measurement of the solar parameters and sin2
θ
12 and

Δ

m

21

2

in the presence of NSI and comment on the enduring potential viability of the LMA-D solution.
Revealing the Majorana nature of neutrinos through a precision measurement of the CP phase
Authors: Carrasco-Martínez J.C. , Díaz F.N. , Gago A.M. 
Published: February 2022

Abstract
We show that it is possible to reveal the nature of neutrino by measuring the Majorana phase at the DUNE experiment. The Majorana phase is activated in the neutrino oscillation framework due to the introduction of a decoherence environment. Being that depending on the value of the Majorana phase and the intensity of decoherence, the measurement of the Dirac CP violation phase δCP can be highly spoiled. We will notice the latter by comparing the measurements of the CP phases that will take place in DUNE and T2HK. Finally, we will also assess the possibility of the measurement itself of the Majorana phase at DUNE.