bluuebunny/crossref_metadata_2025_split huggingface dataset:
Search for exotic neutrino-electron interactions using solar neutrinos in XMASS-I
Authors: Ogawa Hiroshi 
Published: February 2022

Abstract
In recent years, the larger size and lower background of dark matter search detectors have opened up a new frontier of searching for new physics other than dark matter using these detectors. One of them is the search for new properties of neutrinos by observing the interaction of neutrinos at low energy. XMASS is a multi-purpose experiment using xenon exclusively in ites liquid xenon (LXe) and is located at the Kamioka Observatory in Japan. We searched for exotic neutrino-electron interactions that could be produced by either a neutrino millicharge, a neutrino magnetic moment, or by dark photons, which might affect the intearction cross section of solar neutrinos in XMASS. We analyzed data taken between November 2013 and March 2016 amounting to 711 live days. No significant signal has been found above the predicted background level in detector. We obtained an upper limit for neutrino millicharge of 5.4 × 10–11e for all flavors of neutrino. We also set individual flavors limits for υμ and ν
τ, which are the best limits obtained by direct detection. We also obtain an upper limit for the neutrino magnetic moment of 1.8× 10–10μ
B
. In addition, we obtain upper limits for the coupling constant of dark photons in the U(1)
B–L
model. This result almost excludes the possibility to understand the muon g — 2 anomaly by dark photons.
Spectroscopy of geoneutrinos with Borexino
Authors: Kumaran Sindhujha 
Published: February 2022

Abstract
Borexino is a 280-ton liquid scintillator detector located at the Laboratori Nazionali del Gran Sasso (LNGS), Italy and is one of the two detectors that has measured geoneutrinos so far. The unprecedented radio-purity of the scintillator, the shielding with highly purified water, and the placement of the detector at 3800 m w.e. depth have resulted in very low background levels, making Borexino an excellent apparatus for geoneutrino measurements. This article will summarize the recent geoneutrino analysis and results with Borexino, from the period December 2007 to April 2019. The updated statistics and the optimized analysis techniques such as an increased fiducial volume and sophisticated cosmogenic vetoes, have led to more than a two-fold increase in exposure when compared to the previous measurement in 2015, resulting in a significant improvement in the precision. In addition, Borexino has also been able to reject the null hypothesis of the mantle geoneutrino signal with 99% C.L., for the first time, by exploiting the extensive knowledge of the crust surrounding the detector. This article will also include other geological interpretations of the obtained results such as the calculation of the radiogenic heat and the comparison of the results to various predictions. Additionally, upper limits for a hypothetical georeactor that might be present at different locations inside the Earth will also be discussed.
Status of the Short-Baseline Near Detector at Fermilab
Authors: Crespo-Anadón J.I. 
Published: February 2022

Abstract
The Short-Baseline Near Detector (SBND) will be one of three liquid argon time projection chamber neutrino detectors positioned along the axis of the Booster Neutrino Beam at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently in the construction phase and is anticipated to begin operation in the second half of 2022. SBND is characterized by superb imaging capabilities and will record over a million neutrino interactions per year. Thanks to its unique combination of measurement resolution and statistics, SBND will carry out a rich program of neutrino interaction measurements and novel searches for physics beyond the Standard Model. It will enable the potential of the overall SBN sterile neutrino program by performing a precise characterization of the unoscillated event rate, and by constraining BNB flux and neutrino-argon cross-section systematic uncertainties.
The Selena Neutrino Experiment
Authors: Chavarria A.E. 
Published: February 2022

Abstract
Imaging sensors made from an ionization target layer of amorphous selenium (aSe) coupled to a silicon complementary metal-oxide-semiconductor (CMOS) active pixel array for charge readout are a promising technology for neutrino physics. The high spatial resolution in a solid-state target provides unparalleled rejection of backgrounds from natural radioactivity in the search for neutrinoless ββ decay and for solar neutrino spectroscopy with 82Se. We present results on the ionization response of aSe measured from the photoabsorption of 122 keV γ rays in a single-pixel device. We report on the progress in the fabrication and testing of the first prototype imaging sensors based on the Topmetal II
− pixelated CMOS charge readout chip. We explore the scientific reach of a large neutrino detector with the proposed technology based on our experimental understanding of the sensor performance.
The neutrinoless double beta decay CROSS experiment: demonstrator with surface sensitive bolometers
Authors: Zolotarova A. , Bandac I.C. , Barabash A.S. , Berest V. , Bergé L. , Bourgeois Ch. , Calvo-Mozota J.M. , Carniti P. , Chapellier M. , de Combarieu M. , Dafinei I. , Danevich F.A. , Dumoulin L. , Ferri F. , Giuliani A. , Gotti C. , Ph. Gras , Guerard E. , Ianni A. , Khalife H. , Konovalov S.I. , Loaiza P. , Madhukuttan M. , de Marcillac P. , Mariam R. , Marnieros S. , Marrache-Kikuchi C.A. , Martinez M. , Nones C. , Olivieri E. , Pessina G. , Poda D.V. , Redon Th. , Scarpaci J.-A. , Tretyak V.I. , Umatov V.I. , Zarytskyy M.M. 
Published: February 2022

Abstract
The CROSS experiment is proposing to use a new technology of surface sensitive bolometers for low-background neutrinoless double beta decay searches. Efficient rejection of surface α and β events will allow to reach background in the region of interest below than 10−4 cnts/keV/kg/yr. The isotopes of interest, which are 130Te and 100Mo, are investigated with TeO2 and Li2MoO4 bolometers. The surface sensitivity is achieved thanks to the evaporation of thin metallic film on the crystal surface that modifies the pulse shape of near-surface events. An investigation of various pulse shape parameters was performed. The analysis shows that one of the best parameters for discrimination is the integrated area of the raw signal both for TeO2 and Li2MoO4 with Pd-Al (10 nm - 100 nm) bi-layer.
Violation of Equivalence Principle at IceCube
Authors: Fiorillo Damiano F. G. 
Published: February 2022

Abstract
We study the effects of a Violation of Equivalence Principle (VEP) on neutrino oscillations. We analyze the IceCube data on atmospheric neutrino fluxes to obtain updated constraints on the parameter space of VEP, with the benchmark choice that neutrinos with different masses couple with different strengths to the gravitational field. We find that the VEP parameters times the local gravitational potential at Earth can be constrained at the level of 10−27. The constraints from atmospheric neutrinos strongly depend on the assumption that the neutrino eigenstates interacting diagonally with the gravitational field coincide with the mass eigenstates, which is not a priori justified: as an example, if the basis of diagonal gravitational interaction coincide with the flavor basis, atmospheric neutrinos cannot constrain the model. Finally, we quantitatively study the effect of a VEP on the flavor composition of the astrophysical neutrinos, stressing again the interplay with the basis in which the VEP is diagonal: we find that some choices of such basis are already in tension with the flavor ratio of the diffuse neutrino flux measured by IceCube.
IPPOG Global Cosmic Rays Portal: Making Cosmic Rays Studies available to schools worldwide
Authors: Gulejova Barbora Bruant 
Published: February 2022

Abstract
The International Particle Physics Group (IPPOG) is a global network active in informal education and outreach in particle physics and related research, including cosmic-ray and astro-particle physics. Since many years, IPPOG has been actively supporting the International Cosmic Day organized by DESY and the International Muon Week organized by Quarknet. In 2015 IPPOG started work on establishing a universal portal through which successful cosmic-ray study programmes can reach out to teachers and students around the world. This common web platform is being developed by IPPOG in the frame of its new IPPOG web pages. It will contain all information for schools interested in taking part in cosmic-ray experiments and analysing real data in classroom; also instructions about how to build, borrow, or purchase cosmic-ray detectors. The platform will also facilitate collaboration and exchanges between the experiments’ project managers and advertising of related events.
Annual modulations of the angular recoil—flux/energy distributions of WIMP—scattered target nuclei observed at an underground laboratory
Authors: Shan Chung-Lin 
Published: February 2022

Abstract
In this article, we demonstrate the target and WIMP–mass dependent “annual modulations” of the angular distributions of the recoil flux and energy of WIMP–scattered target nuclei observed at the Laboratorio Subterráneo de Canfranc (LSC). For readers’ reference, simulation plots with different WIMP masses and frequently used target nuclei for all functionable underground laboratories can be found and downloaded on our online (interactive) demonstration webpage (http://www.tir.tw/phys/hep/dm/amidas-2d/).
Background model of the ANAIS-112 dark matter experiment
Authors: Amaré J , Cebrián S , Cintas D , Coarasa I , García E , Martínez M , Oliván M A , Ortigoza Y , Ortiz de Solórzano A , Puimedón J , Salinas A , Sarsa M L , Villar P 
Published: February 2022

Abstract
The ANAIS (Annual modulation with NaI(Tl) Scintillators) experiment aims at the confirmation or refutation of the DAMA/LIBRA positive annual modulation signal in the low energy detection rate. ANAIS-112, consisting of nine 12.5 kg NaI(Tl) modules, is taking data since August, 2017 at the Canfranc Underground Laboratory (LSC) in Spain. Results from the analysis of three years of data are compatible with the absence of modulation. The background model developed for all nine ANAIS-112 detectors was established from commissioning data and non-blinded events in the first year of data taking. Now, background characterization is being improved profiting from the larger accumulated exposure available. Here, the background model is described and comparisons of model and measurements for energy spectra and counting rate time evolution for three-year exposure (considering different analysis conditions) are presented.
Collective neutrino oscillations in moving and polarized matter
Authors: Chen Zekun , Kouzakov Konstantin , Li Yu-Feng , Shakhov Vadim , Stankevich Konstantin , Studenikin Alexander 
Published: February 2022

Abstract
We consider neutrino evolution master equations in dense moving and polarized matter consisted of electrons, neutrons, protons and neutrinos. We also take into account the neutrino magnetic moment interaction with a magnetic field. We point out the mechanisms responsible for the neutrino spin precession and provide the expressions for the corresponding interaction Hamiltonians that should be taken into account in theoretical treatments of collective neutrino oscillations.
Event reconstruction performance with new retro-reflector based designs for water Cherenkov detectors
Authors: Berns L , Fujigami S , Kuze M , Yamaguchi Y 
Published: February 2022

Abstract
We have proposed the possibility of a cost-efficient way to improve the detector performance for water Cherenkov detectors, by reflecting the usually lost light falling between photo-detectors onto the other side of the tank with retro-reflectors. Using a detector simulation based on optical measurements of retro-reflectors, we developed a convolutional neural network-based reconstruction algorithm. Here we report on the reconstruction performance for ring events in the energy scale expected for atmospheric and accelerator neutrinos under various candidate detector configurations.
Optimizing the time resolution of cryogenic calorimeters with NTDs: the CALIPSO project
Authors: Nutini Irene 
Published: February 2022

AbstractThe CALIPSO project deals with the development and optimization of low temperature (∼10 mK) solid state detectors. The goal of the project is to propose new strategies for improving the time resolution of cryogenic scintillating calorimeters, read with NTD thermistors. We will test new NTD-detector coupling techniques and optimize the NTD operation to make the response faster. In parallel, we will work on improving the scintillation light yield for different crystals at low temperatures. Rare events physics experiments utilizing the NTD-detector technology on a large scale, such as the ones searching for the neutrinoless double beta decay (CUORE, CUPID), could profit from the results of this project.
Xenon doping of Liquid Argon in ProtoDUNE Single Phase: first results
Authors: Gallice Niccolò 
Published: February 2022

Abstract
Doping Liquid Argon (LAr) with xenon is a known technique to shift the light emitted by argon (128 nm) to a longer wavelength to ease its detection. The largest Xenon doping test ever performed in a LArTPC was carried out in ProtoDUNE Single Phase (ProtoDUNE-SP) at the CERN Neutrino Platform. The response of such a large TPC (7701 of Liquid Argon and 4401 of fiducial mass) has been studied using the ProtoDUNE Photon Detection System (PDS) and a dedicated setup installed before the run. With the first, it was possible to study the light detected in the system as a function of the xenon concentration and to characterise the light collection efficiency with respect to the track position. With the second system it was possible to disentangle the LAr (128 nm) light from the xenon (178 nm) light using two dedicated X-ARAPUCA modules. The run was fully satisfactory, it was possible to measure directly the increase of the xenon light component during doping; furthermore most of the LAr light quenched by impurities was fully recovered even at small Xenon concentration (< 20 ppm in mass). A study of the collected scintillation light as a function of the track position showed an improvement of the detector response uniformity.
Data analysis strategy used for the detection of CNO solar neutrinos with Borexino
Authors: Pelicci L 
Published: February 2022

Abstract
Borexino is a large liquid scintillator experiment located at the underground INFN Laboratori Nazionali del Gran Sasso, in Italy. It was designed and built with the primary goal of real-time detection of low energy solar neutrinos, and in more than ten years of data taking it has measured all the neutrino fluxes produced in the proton-proton chain, i.e. the main fusion process accounting for 99% of the energy production in the Sun. Recently, after improvements and developments in both hardware and software, Borexino has provided the first observation of solar neutrinos emitted from the subdominant Carbon-Nitrogen-Oxygen (CNO) fusion cycle. All the crucial steps of the analysis strategy adopted to disentangle the signal of CNO neutrinos from backgrounds present in the detector will be described in this article.
Advances on the performance and fabrication of low-background PTFE based electronic substrates by surface modification
Authors: Zhang S J , Liu Y Y , Cheng J P , Lv S S 
Published: February 2022

Abstract
The weak signal from rare event is readily submerged in the background and thus results in substantial challenges in its detection, which spurs researchers to decrease the surroundings background of detectors as low as possible. To this end, a low-background non-adhesive polytetrafluoroethylene (PTFE) flexible copper-clad laminate (PTFE-FCCL) was prepared by surface treatment. Specifically, the PTFE substrate was processed by ion implantation and the transition layer deposition; the adhesion between PTFE and copper of PTFE-FCCL is found to remain stable after barely immersing in liquid nitrogen. Furthermore, the surface morphology and the dielectric properties of the substrate were characterized and tested. The results presented herein offer a novel method to fabricate electronic substrates that can facilitate rare event detection.
Purity monitoring for ProtoDUNE-SP
Authors: Xiao Yiwen 
Published: February 2022

Abstract
The Deep Underground Neutrino Experiment is a next-generation long-baseline neutrino oscillation experiment based on liquid argon time projection chamber technology. DUNE-s single-phase prototype ProtoDUNE-SP at CERN finished its two-year Phase-1 running in July 2021, successfully collected test-beam and cosmic ray data. A key aspect of LArTPC calibration is the lifetime of drift electrons. A purity monitor is a miniature TPC measuring the lifetime of electrons generated from the photocathode via the photoelectric effect. It enables continuous monitoring of the detector status, especially when filling the cryostat and when liquid argon recirculation systems operate. The purity monitoring system in ProtoDUNE-SP Phase-1 monitored liquid argon purity throughout its entire lifetime. It is essential to the experiment’s successful commissioning, operation, and data taking. This poster discusses the design, implementation, and results of purity monitors and plans.
Influence of NaI background and mass on testing the DAMA modulation
Authors: Zurowski Madeleine J. , Barberio Elisabetta 
Published: February 2022

AbstractNaI experiments should be sensitive to the same DM-SM interactions proposed to explain the observed DAMA modulation. As such, they are often called a ‘model independent’ test of the signal. While the same signal will be produced at all NaI detectors, the ability to observe it is strongly dependent on the experimental set up - in particular the mass and background of the target. We present here a study on how changes to these values influence the ability of a detector to observe a characteristic DM modulation. We consider both the standard elastic, spin independent WIMP and a model independent analysis assuming exactly the modulation signal observed by DAMA (i.e., making no assumptions about the particle interaction model producing this signal), and find that in both cases a lower background is favoured over a higher exposure mass (based on currently achievable levels).
The cosmic muon-induced background for the LEGEND-1000 alternative site at LNGS
Authors: Neuberger M , Pertoldi L. , Schönert S , Wiesinger C. 
Published: February 2022

Abstract
The in-situ production of long-lived radio-isotopes by cosmic muon interactions may generate a non-negligible background for rare event searches in the deep subsurface. The delayed decay of 77(m)Ge has been identified as the dominant in-situ cosmogenic contributor for a neutrinoless double-beta decay search with 76Ge. The future ton-scale LEGEND-1000 experiment requires a total background of ≤ 10−5 cts/(keV-kg-yr). Dedicated Monte Carlo studies of the 77(m)Ge background at the alternative LNGS site were performed. The addition of passive neutron moderators, in combination with a delayed coincidence strategy, results in a background contribution of 8.6 × 10−7 cts/(keV.kg.yr) with an additional dead time of < 9%.
Comparative study of Dirac and Majorana ultrahigh-energy neutrino oscillations in an interstellar magnetic field
Authors: Abeyadira Daniil , Kouzakov Konstantin , Studenikin Alexander 
Published: February 2022

Abstract
We examine the ultrahigh-energy neutrino propagation in interstellar space in the Dirac and Majorana cases. Employing the two-neutrino mixing approximation and using the astrophysical constraints on neutrino magnetic moments, we show that both the flavor and the spin oscillations of the Dirac and Majorana neutrinos exhibit qualitatively different behaviors in an interstellar magnetic field for neutrino-energy values characteristic of, respectively, the cosmogenic neutrinos and well above the Greisen-Zatsepin-Kuz’min cutoff.
Core-collapse simulation of SN 1987A binary progenitor and its multimessenger signals
Authors: Nakamura Ko 
Published: February 2022

Abstract
We perform a three-dimensional self-consistent core-collapse supernova simulation using a binary evolution progenitor model of SN 1987A. This progenitor model is based on a slow-merger of 14 M∹ and 9 M∹ stars and it satisfies most of the observational constraints such as red-to-blue evolution, lifetime, total mass and position in the Hertzsprung-Russell diagram at collapse, and chemical anomalies. We find that this progenitor model successfully present explosion and leave a 1.53 M∹ neutron star with a kick velocity of 70kms−1 and a spin period of 0.1 s. Assuming a detector sensitivity of Kamiokande-II and the distance to the supernova of 51 kpc, we obtain 16 neutrino detection events in one second. Some characteristic modes in its gravitational wave signal are also discussed in this article.
Neutral bremsstrahlung in TPCs
Authors: Amedo P. , González-Díaz D. , Jones B.J.P. 
Published: February 2022

AbstractTraditionally, it has been assumed that electroluminescence (EL) in time projection chambers was purely an excimer-based emission. This idea changed when neutral bremsstrahlung (NBrS) was observed first in argon and subsequently in xenon a few years ago. In this work we explore further the framework used to explain these observations, presenting results for noble gas-based mixtures, as well as mixtures including small fractions of a molecular additive (‘quencher’). Spectral content and yields are discussed in some cases of contemporary interest, together with their pressure-scalings.
EIC detector overview
Authors: Higinbotham D.W. 
Published: February 2022

Abstract
The Electron Ion Collider will have two interaction regions that can be instrumented with detectors. The first region will be instrumented as part of the project and needs to be capable of delivering the physics that has been outlined by the National Academy of Sciences and ready at the start of beam commissioning near the end of this decade. Plans for a second complementary detector to be located at a second interaction region are already in progress and will hopefully come to fruition just few years after the first detector comes online. While the basic parameters of these detectors are being selected using conventional approaches, the optimization of the detectors is already being enhanced by making use of advanced optimization techniques.