bluuebunny/crossref_metadata_2025_split huggingface dataset:
Searching for neutrinoless double beta decay with GERDA
Authors: Agostini M. , Bakalyarov A.M. , Balata M. , Barabanov I. , Baudis L. , Bauer C. , Bellotti E. , Belogurov S. , Bettini A. , Bezrukov L. , Bode T. , Brudanin V. , Brugnera R. , Caldwell A. , Cattadori B. , Chernogorov A. , D’Andrea V. , Demidova E.V. , Di Marco N. , Domula A. , Doroshkevich E. , Egorov V. , Falkenstein R. , Gangapshev A. , Garfagnini A. , Gooch C. , Grabmayr P. , Gurentsov V. , Gusev K. , Hakenmüller J. , Hegai A. , Heisel M. , Hemmer S. , Hiller R. , Hofmann W. , Hult M. , Inzhechik L.V. , Janicsko J. , Jochum Csáthy J. , Junker M. , Kazalov V. , Kermaidic Y. , Kihm T. , Kirpichnikov H. V. , Kirsch A. , Kish A. , Klimenko A. , Kneiβl R. , Knöpfle K.T. , Kochetov O. , Kornoukhov V.N. , Kuzminov V.V. , Laubenstein M. , Lazzaro A. , Lebedev V.I. , Lindner M. , Lippi I. , Lubashevskiy A. , Lubsandorzhiev B. , Lutter G. , Macolino C. , Majorovits B. , Maneschg W. , Miloradovic M. , Mingazheva R. , Misiaszek M. , Moseev P. , Nemchenok I. , Panas K. , Pandola L. , Pelczar K. , Pullia A. , Ransom C. , Riboldi S. , Rumyantseva N. , Sada C. , Salamida F. , Schmitt C. , Schneider B. , Schreiner J. , Schulz O. , Schwingenheuer B. , Schönert S. , Schütz A-K. , Selivanenko O. , Shevchik E. , Shirchenko M. , Simgen H. , Smolnikov A. , Stanco L. , Vanhoefer L. , Vasenko A.A. , Veresnikova A. , von Sturm K. , Wagner V. , Wegmann A. , Wester T. , Wiesinger C. , Wojcik M. , Yanovich E. , Zhitnikov I. , Zhukov S.V. , Zinatulina D. , Zsigmond A.J. , Zuber K. , Zuzel G. 
Published: January 2020

Abstract
The GERmanium Detector Array (Gerda) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for the neutrinoless double beta decay of 76Ge, by using high-purity germanium detectors made from isotopically enriched material. The combination of the novel experimental design, the careful material selection for radio-purity and the active/passive shielding techniques result in a very low residual background at the Q-value of the decay, about 10−3 cts/(keV-kg-yr). This makes GERDA the first experiment in the field to be background-free for the complete design exposure of 100 kg-yr. A search for neutrinoless double beta decay was performed with a total exposure of 46.7 kg-yr: 23.2 kg-yr come from the second phase (Phase II) of the experiment, in which the background is reduced by about a factor of ten with respect to the previous phase. The analysis presented in this paper includes 12.4 kg-yr of new Phase II data. No evidence for a possible signal is found: the lower limit for the half-life of 76Ge is 8.0 • 1025 yr at 90% CL. The experimental median sensitivity is 5.8 • 1025 yr. The experiment is currently taking data. As it is running in a background-free regime, its sensitivity grows linearly with exposure and it is expected to surpass 1026 yr within 2018.
Horizon-T experiment and detection of Extensive air showers with unusual structure
Authors: Beznosko D , Beisembaev R U , Baigarin K A , Batyrkhanov A , Beisembaeva E A , Beremkulov T. , Dalkarov O D , Iakovlev A , Ryabov V A , Suleimenov N S , Sadykov T K h , Tagay Z , Uakhitov T , Vildanova M I , Zhukov V V 
Published: January 2020

Abstract
Horizon-T is an innovative detector system constructed to study temporary structure of Extensive Air Showers (EAS) in the energy range above ~1016 eV coming from a wide range of zenith angles (up to 80°). The system, located at Tien Shan high-altitude Science Station at approximately 3340 meters above the sea level, consists of eight charged particle detection points separated by the distance up to one kilometer. The time resolution of charged particles passage of the detector system is a few ns. This level of resolution allows conducting research of atmospheric development of individual EAS. The total of ~8500 Extensive Air Showers (EAS) with the energy above 1016 eV has been detected during the ~4000 hours of Horizon-T detectors system operations since October 24, 2016 to April 21, 2017. A notable number of events has a spatial and temporary structure that showed the pulses with several maxima (modals or modes) from several detection points of the Horizon-T at the same time as described further in this work. These modes are separated in time from each other starting from tens to thousands of ns. Some are further classified as unusual event with common structure.
Exploring calorimetry new dimensions: a novel approach to maximize the performances of space experiments for high-energy cosmic rays
Authors: Bigongiari Gabriele 
Published: January 2020

Abstract
Calorimeters are the key detectors for future space based experiments focused on high-energy cosmic rays spectra measurements. Thus it is extremely important to optimize their geometrical design, granularity and absorption depth, with respect to the total mass of the apparatus, which is among the most important constraints for a space mission. CaloCube is a homogeneous calorimeter whose basic geometry is cubic and isotropic, so as to detect particles arriving from every direction in space, thus maximizing the acceptance; granularity is obtained by filling the cubic volume with small cubic scintillating crystals. A prototype, instrumented with CsI(Tl) cubic crystals, has been constructed and tested with particle beams.
Recent results from VERITAS
Authors: Daniel M. K. 
Published: January 2020

Abstract
VERITAS has been observing the northern sky at TeV energies with full sensitivity since 2007. Consisting of a ground based array of four 12 m imaging atmospheric Cherenkov telescopes, sited in southern Arizona, it is one of the world’s most sensitive detectors of gamma-rays between 85 GeV to 30 TeV. VERITAS maintains a broad scientific programme in many areas of astroparticle physics, including, but not limited to: studies of the acceleration, propagation and indirect measurements of cosmic rays and their spectra; searching for indirect detection signatures of dark matter candidates; and tests of fundamental physics, such as setting constraints on Lorentz invariance violation. There is also an active multi-messenger programme with partners in the electromagnetic, neutrino, and gravitational wave sectors. We review here the current status and some recent results from VERITAS and examine the prospects for future studies.
The observations of the very-high-energy gamma-ray sky by HAWC
Authors: Muñoz Adiv González 
Published: January 2020

Abstract
The High Altitude Water Cherenkov (HAWC) observatory is an air shower detector designed to study very-high-energy gamma rays. In this proceeding we report the most recent scientific results by HAWC that include the detection of 39, point and extended, gamma-ray sources (already known and new) as well as their physical properties. Also HAWC monitors the flux from the Crab Nebula and two nearby active galactic nuclei, Markarian 421 and Markarian 501, every day as well as searching for transient on various timescales from other sources.
A high precision calorimeter for hunting the sterile neutrino in the SOX experiment
Authors: Noto L.Di , Agostini M. , Altenmüller K. , Appel S. , Caminata A. , Cappelli L. , Cesereto R. , Farinon S. , Gschwender M. , Hess H. , Martyn J. , Musenich R. , Neumair B. , Nieslony M. , Lachenmaier T. , Oberauer L. , Pallavicini M. , Papp L. , Rossi C. , Rottenanger S. , Schönert S. , Testera G. , Trantel A. , Weinz S. , Wurm M. , Zavatarelli S. 
Published: January 2020

Abstract
A thermal calorimetric apparatus was designed, built and calibrated for measuring the activity of the artificial 144
Ce —144 Pr antineutrino source. This measurement will be performed at the Laboratori Nazionali del Gran Sasso in Italy, just before the source insertion in the tunnel under the Borexino detector and a precision better than 1% is required for a disappearance technique measurement in the SOX (Short distance neutrino Oscillation with BoreXino) project. In this work the apparatus is described and the most important results from the calibration measurements are shown, where the final precision of few per thousand is demonstrated.
Results from the Pierre Auger Observatory
Authors: Perrone Lorenzo 
Published: January 2020

Abstract
The Pierre Auger Observatory has been designed to investigate the origin and nature of Ultra High Energy Cosmic Rays. The combination of information from a surface array, measuring the lateral distributions of secondary particles at the ground, and fluorescence telescopes, observing the longitudinal profile, provides an enhanced reconstruction capability and opens the way for a multi-messenger approach. A review of selected results is presented, covering the measurement of energy spectrum, arrival directions, and chemical composition. Finally, the motivation and the status for the ongoing major upgrade of the Observatory, AugerPrime, will be discussed with the emphasis given to future perspectives.
Status of the SNO+ Experiment
Authors: Caden E 
Published: January 2020

Abstract
The SNO+ experiment is located at SNOLAB in Sudbury, Ontario, Canada. It will employ 780 tonnes of liquid scintillator loaded, in its initial phase, with 1.3 tonnes of130Te (0.5% by mass) for a low-background and high-isotope-mass search for neutrino-less double beta decay. SNO+ uses the acrylic vessel and PMT array of the SNO detector with several experimental upgrades and necessary adaptations to fill with liquid scintillator. The SNO+ technique can be scaled up with a future high loading Phase II, able to probe to the bottom of the inverted hierarchy parameter space for effective Majorana mass. Low backgrounds and a low energy threshold allow SNO+ to also have other physics topics in its program, including geo- and reactor neutrinos, supernova and solar neutrinos. This will describe the SNO+ approach for the double-beta decay program, the current status of the experiment and its sensitivity prospects.
Initial results from the Majorana Demonstrator
Authors: Caldwell T S , Abgrall N , Alvis S I , Arnquist I J , Avignone F T , Barabash A S , Barton C J , Bertrand F E , Bode T , Bos B , Bradley A W , Brudanin V , Busch M , Buuck M , Y-D Chan , Christofferson C D , Chu P-H , Cuesta C , Detwiler J A , Dunagan C , Efremenko Yu , Ejiri H , Elliott S R , Gilliss T , Giovanetti G K , Green M P , Gruszko J , Guinn I S , Guiseppe V E , Haufe C R , Hehn L , Henning R , Hoppe E W , Howe M A , Keeter K J , Kidd M F , Konovalov S I , Kouzes R T , Lopez A M , Martin R D , Massarczyk R , Meijer S J , Mertens S , Myslik J , O‘Shaughnessy C , Othman G , Pettus W , Poon A W P , Radford D C , Rager J , Reine A L , Rielage K , Robertson R G H , Ruof N W , Shanks B , Shirchenko M , Suriano A M , Tedeschi D , Trimble J E , Varner R L , Vasilyev S , Vetter K , Vorren K , White B R , Wilkerson J F , Wiseman C , Xu W , Yakushev E , Yu C-H , Yumatov V , Zhitnikov I , Zhu B X 
Published: January 2020

Abstract
The Majorana Collaboration has assembled an array of high purity Ge detectors to search for neutrinoless double-beta decay in 76Ge with the goal of establishing the required background and scalability of a Ge-based next-generation ton-scale experiment. The Majorana Demonstrator consists of 44 kg of high-purity Ge (HPGe) detectors (30 kg enriched in 76Ge) with a low-noise p-type point contact (PPC) geometry. The detectors are split between two modules which are contained in a single lead and high-purity copper shield at the Sanford Underground Research Facility in Lead, South Dakota. Following a commissioning run that started in June 2015, the full detector array has been acquiring data since August 2016. We will discuss the status of the Majorana Demonstrator and initial results from the first physics run; including current background estimates, exotic low-energy physics searches, projections on the physics reach of the Demonstrator, and implications for a ton-scale Ge-based neutrinoless double-beta decay search.
Limiting the effective magnetic moment of solar neutrinos with the Borexino detector
Authors: Ludhova L 
Published: January 2020

Abstract
Borexino has provided an updated upper limit on the effective neutrino magnetic moment of solar neutrinos μβα < 2.8 x 10−11
μऔ
at 90% C.L. This result represents nearly a factor of two improvement with respect to the previous result based on 192 days of the Phase-I data. The current analysis has been performed using 1291.5 days exposure of the Phase-II data, characterized by a further improved level of radio-purity of liquid scintillator. Another key ingredient of the new analysis, lowering the threshold from 260 to 186 keV, was possible thanks to a better understanding of the detector-response function at low energies. The global spectral fit was preformed up to 2970 keV energy, using constraints on the sum of the solar neutrino fluxes implied by the radiochemical gallium experiments. From the limit for the effective neutrino magnetic moment, new limits for the magnetic moments of the neutrino flavour states were derived.
Recent Solar neutrino Results from Super-Kamiokande
Authors: Nakano Y. 
Published: January 2020

Abstract
Super-Kamiokande (SK), a 50 kton water Cherenkov detector in Japan, is observing neutrinos and searching for proton decay and dark matter. The installation of new front-end electronics in 2008 marks the beginning of the 4th phase of SK (SK-IV). With the improvement of the water circulation system, calibration methods, reduction cuts, this phase achieved the lowest energy threshold thus far: 3.5 MeV kinetic energy. SK studies the effects of both the solar and terrestrial matter density on neutrino oscillations: a distortion of the solar neutrino energy spectrum would be caused by the edge of the Mikheyev-Smirnov-Wolfenstein resonance in the solar core, and terrestrial matter effects would induce a day/night solar neutrino flux asymmetry. SK observed solar neutrino interactions for more than 20 years. This long operation covers about ∼2 solar activity cycles. An analysis about a possible correlation between solar neutrino flux and 11 year activity cycle will be presented.
Astrophyisical Neutrino in Hyper-Kamiokande
Authors: Yano Takatomi 
Published: January 2020

Abstract
Hyper-Kamiokande (Hyper-K) is a proposed next generation underground large water Cherenkov detector. We plan to build two cylindrical water tanks in our experimental period, filled with ultra pure water and surrounded with newly developed photo sensors. In total, it will provide the fiducial volume of 0.19-0.37 Mt. The energies, positions, directions and types of charged particles produced by neutrino interactions are detected using its Cherenkov light in water. Our detector will be located at deep underground to reduce the cosmic muon flux and its spallation products, which is a dominant background for the analysis of the low energy astrophysical neutrinos.
With the fruitful physics research programs planned for the accelerator neutrinos, atomospheric neutrinos and nucleon decay, Hyper-K will play an important role in the next neutrino physics frontier, even in the neutrino astrophysics. It will provide remarkable information for both of particle physics and astrophysics with its large statistics of astrophysical neutrino measurements, i.e., solar neutrino, supernova burst neutrinos and supernova relic neutrino. Here, we will discuss about physics potential of Hyper-K neutrino astrophysics and expected performance of the detector.
The ANAIS-112 experiment at the Canfranc Underground Laboratory
Authors: Amaré J , Cebrián S , Coarasa I , Cuesta C , García E , Martínez M , Olivan M A , Ortigoza Y , Ortizde Solárzano A , Puimedòn J , Salinas A , Sarsa M L , Villar P , Villar J A 
Published: January 2020

Abstract
The ANAIS experiment aims at the confirmation of the DAMA/LIBRA signal at the Canfranc Underground Laboratory (LSC). Several 12.5 kg NaI(Tl) modules produced by Alpha Spectra Inc. have been operated there during the last years in various set-ups; an outstanding light collection at the level of 15 photoelectrons per keV, which allows triggering at 1 keV of visible energy, has been measured for all of them and a complete characterization of their background has been achieved. In the first months of 2017, the full ANAIS-112 set-up consisting of nine Alpha Spectra detectors with a total mass of 112.5 kg was commissioned at LSC and the first dark matter run started in August, 2017. Here, the latest results on the detectors performance and measured background from the commissioning run will be presented and the sensitivity prospects of the ANAIS-112 experiment will be discussed.
The R&D progress of the Jinping neutrino experiment
Authors: Chen Shaomin 
Published: January 2020

Abstract
China JinPing underground Laboratory (CJPL) is located about 2400 m below Jinping mountain, providing a unique feature for studies of low-energy neutrinos. A neutrino experiment has been proposed to perform an in-depth research on solar neutrinos, geo-neutrinos and supernova relic neutrinos at Jinping. The physics motivations, the R&D efforts and the present status are reported for a proposed kilo-ton neutrino detector at Jinping. The future prospects are also given.
Dark matter search with the SABRE experiment
Authors: D’Imperio Giulia 
Published: January 2020

Abstract
The SABRE (Sodium Iodide with Active Background REjection) experiment will search for an annually modulating signal from dark matter using an array of ultra-pure NaI(Tl) detectors surrounded by an active scintillator veto to further reduce the background. The first phase of the experiment is the SABRE Proof of Principle (PoP), a single 5 kg crystal detector operated in a liquid scintillator filled vessel at Laboratori Nazionali del Gran Sasso (LNGS). The SABRE-PoP installation is underway with the goal of running in 2018 and performing the first in situ measurement of the crystal background, testing the veto efficiency, and validating the SABRE concept. The second phase of SABRE will be twin arrays of NaI(Tl) detectors operating at LNGS and at the Stawell Underground Physics Laboratory (SUPL) in Australia. By locating detectors in both hemispheres, SABRE will minimize seasonal systematic effects. This paper presents the status report of the SABRE activities as well as the results from the most recent Monte Carlo simulation and the expected sensitivity.
Status and prospect of the ANKOK project: Low mass WIMP dark matter search using double phase argon detector
Authors: Kimura Masato , Tanaka Masashi , Yorita Kohei 
Published: January 2020

Abstract
The ANKOK project is a dark matter search experiment using an argon detector specialized for the low mass (∼ 10 GeV/c2) WIMP detection. We are currently proceeding with R&D efforts to understand the background sources, develop and apply new photo sensor that is directly sensitive to 128 nm argon scintillation light and improve electron recoil type background rejection. In the next few years, we are planning to construct such an argon detector in an underground laboratory with enough sensitivity to detect low mass WIMP.
International Axion Observatory (IAXO) status and prospects
Authors: Lakić Biljana 
Published: January 2020

Abstract
International Axion Observatory (IAXO) is a new generation axion helioscope aiming to search for solar axions and axion-like particles (ALPs) with a signal to background ratio of about 5 orders of magnitude higher than the one achieved by currently the most sensitive axion helioscope, CAST. IAXO relies on large improvements in magnetic field volume and extensive use of X-ray focusing optics combined with low-background detectors. IAXO will probe a substantial unexplored region of the axion and ALP parameter space which is theoretically and cosmologically motivated, and thus will have significant discovery potential. IAXO could also be used to test models of other proposed particles at the low energy frontier of particle physics, like hidden photons or chameleons. In addition, the IAXO magnet could accommodate new equipment to search for relic axions or ALPs potentially composing the galactic halo of dark matter.
Backgrounds in the DEAP-3600 Dark Matter Experiment
Authors: Lehnert B 
Published: January 2020

Abstract
The DEAP-3600 experiment, located at SNOLAB, is searching for dark matter with a single phase liquid argon (LAr) target. For a background-free exposure of 3000 kg·yr, the projected sensitivity to the spin-independent WIMP-nucleon cross section at 100 GeV/c2 WIMP mass is 10−46 cm2.
The experimental signature of dark matter interactions is keV-scale argon recoils producing 128 nm LAr scintillation photons which are wavelength shifted and observed by 255 PMTs. To reach the large background-free exposure, a combination of careful material selection, passive shielding, active vetoes, fiducialization and pulse shape discrimination (PSD) is used. The main concept of the background rejection in DEAP-3600 is the powerful PSD, employing the large difference between fast and slow components of LAr scintillation light. The designed background level of DEAP-3600 is less than 0.6 events in a 3000 kg·yr exposure. The experiment was filled in November 2016 and is currently taking dark matter search data.
Modulations in Spectra of Galactic Gamma-ray sources as a result of photon-ALPs mixing.
Authors: Majumdar Jhilik , Calore Francesca , Horns Dieter 
Published: January 2020

Abstract
Axion like particles (ALPs) are fundamental pseudo scalar particles with properties similar to Axions which are a well-known extensions of the standard model to solve the strong CP problem in Quantum Chromodynamics. ALPs can oscillate into photons and vice versa in the presence of an external tranversal magnetic field. This oscillation of photon and ALPs could have important implications for astronomical observations, i.e. a characteristic energy dependent attenuation in Gamma ray spectra for astrophysical sources. Here we have revisited the opportunity to search Photon-ALPs coupling in the disappearance channel. We use eight years of Fermi Pass 8 data of a selection of promising galactic Gamma-ray source candidates and study the modulation in the spectra in accordance with Photon-ALPs mixing and estimate best fit values of the parameters i.e. Photon-ALPs coupling constant (g
ʱγγ) and ALPs mass(mα). For the magnetic field we use large scale galactic magnetic field models based on Faraday rotation measurements and we have also studied the survival probability of photons in the Galactic plane.
Dark Matter Searches at Super-Kamiokande
Authors: Mijakowski Piotr 
Published: January 2020

Abstract
This work presents indirect searches for dark matter (DM) as WIMPs (Weakly Interacting Massive Particles) using neutrino data collected with the Super-Kamiokande detector from 1996 until 2016. The results of the search for WIMP-induced neutrinos from the Sun, the Earth’s core and the Milky Way are discussed. We looked for an excess of neutrinos related to a given source as compared to the expected atmospheric neutrino background. No excess of the WIMP-induced neutrinos is observed in any of the analyses. Limits on the WIMP-nucleon spin-dependent/-independent cross sections (Solar & Earth analysis) and on the WIMP self-annihilation cross section 〈σAV〉 (Galactic analysis) are derived assuming various annihilation modes and masses of the relic particles.