bluuebunny/crossref_metadata_2025_split huggingface dataset:
Search for neutrino counterparts of LIGO/Virgo gravitational-wave events
Authors: Unatlokov I B , Dzaparova I M , Kostyuk M G , Kochkarov M M , Kurenya A N , Novoseltsev Yu F , Novoseltseva R V , Petkov V B , Striganov P S , Yanin A F 
Published: February 2022

Abstract
The LIGO/Virgo collaborations have reported the results of their searches for gravitational-waves from the first half of their third observing run. 39 events were combined into the second Gravitational-Wave Transient Catalog (GWTC-2), reaching the total number of 50. In addition to these, two neutron star - black hole merger events were also confirmed. The search for neutrino counterparts of LIGO/Virgo gravitational-wave events was performed on the Baksan Underground Scintillation Telescope. The processing algorithm and the results of the counterpart search are described.
Status of AMoRE
Authors: Oh Yoomin 
Published: February 2022

Abstract
AMoRE is to search for neutrinoless double beta decay using Mo-100 enriched crystal scintillators at an ultra-low temperature. We have understood the major background sources and how they can be reduced from a pilot stage run in the Yangyang underground laboratory. AMoRE-I is currently running with twelve 48deplCa100MoO4 and five Li2
100MoO4 crystals with a total mass of enriched 100Mo 2.8 kg. The detector design for the main stage of the experiment, AMoRE-II, has been finalized and the detector is under construction in YemiLab, a new underground laboratory located in an iron mine with an average depth 2500 meter of water equivalent.
Tests of the Lorentz invariance violation in double-beta decay
Authors: Stoica Sabin 
Published: February 2022

Abstract
Testing the Lorentz invariance violation (LIV) double-beta decay (DBD) is an interesting, recently opened topic, currently under investigation. Theoretically, LIV can be induced in this process by coupling neutrinos to the countershaded operator in the Standard Model extension (SME) theory, particularly to its time-like component, and could manifest as small perturbations in the shape of the energy spectra of electrons. In the absence of observation of such perturbations, one can constrain the values of the oscillation-free (of) coefficient

å

o

f

(
3
)

, that controlled the size of the LIV effects. Such investigations are currently been conducted in several DBD experiments and are based on theoretical predictions of the electron spectra and angular correlation between electrons in 2νββ decay. In this paper I first present some general considerations about DBD and then give a brief review of the current status of LIV searches in the study of this process.
Involving the new generations in particle physics endeavours
Authors: Barzi E , Bellettini G , Donati S , Pasciuto D 
Published: February 2022

Abstract
Since 1984 INFN and University of Pisa scientists performing experiments at Fermilab have been running a two-month summer training program for Italian students at the lab. In 1984 the program involved only a few physics students from the University of Pisa, but it was later extended to other INFN groups and to engineering students. Since 2004 the program has been supported in part by the US Department of Energy (DOE) in the frame of an exchange agreement with INFN and has been run by the Cultural Association of Italians at Fermilab (CAIF). In 2007 the Sant’Anna School of Advanced Studies (Pisa) established an agreement with Fermilab to share the cost of four engineering students each year. In the almost 40 years of its history, the program has hosted at Fermilab approximately 550 Italian students from more than 20 Italian universities and from some non-Italian universities. In addition, in the years 2010-2019, with the support of the Italian National Institute of Astrophyics (INAF), the Italian Space Agency (ASI), and CAIF, 30 students were hosted in other US laboratories and universities. The Fermilab training programs spanned from data analysis to design and construction of particle detectors and accelerator components, R/D on superconductive elements, theory of accelerators, and analysis of astrophysical data. At the other US laboratories the offered training was on Space Science. In 2015 the University of Pisa endorsed the program as one of its own Summer Schools. The interns are enrolled as Pisa students for the duration of the internship. They are required to write summary reports published in the Fermilab and University of Pisa web pages. Upon positive evaluation by a University board, students are acknowledged 6 ECTS credits. The entire program is expected to expand further under CAIF management. An agreement has been signed between ASI and CAIF, for ASI to support yearly three two-months fellowships in US space science. In the following we inform on student recruiting, training programs, and final evaluation
Outreach and educational activities of the ALICE collaboration during the COVID pandemic
Authors: Hatzifotiadou Despina 
Published: February 2022

Abstract
With the onset of the COVID pandemic in 2020 all outreach and educational activities with in-person participation had to stop. The ALICE Collaboration adapted to the new situation and continued reaching out to the public using the multitude of online tools and platforms available. Here we focus on two of our main outreach activities, virtual visits and masterclasses. With the cancellation of all in-person visits, virtual visits became the only way to explore the experiment. ALICE had already been offering virtual visits for remote audiences with equipment installed in the ALICE Run Control Centre (ARC). We recently acquired dedicated mobile equipment for the virtual visits to the cavern and developed a scenario which includes both the cavern and the ARC as well as a Q&A session. In this way, visitors from many countries have the opportunity to interact with scientists and to see parts of the experiment that they would never be able to see during a real visit. Concerning the International Masterclasses (IMC) programme, ALICE has been participating ever since measurements based on LHC data were introduced in it. The packages used had been developed by simplifying the ALICE event display and were based on ROOT. With the spreading of the COVID pandemic the 2020 IMC programme was interrupted. In 2021, with most activities taking place remotely, it was obvious that web-based versions were needed. The implementation of such versions allowed us to hold remote masterclasses for high-school students, thus ensuring the continuity of this important outreach activity of our community. In addition we reached new countries and also involved high-school teachers in this global effort.
Measurements and Simulation of background radiation for rare event search experiments at an underground laboratory
Authors: Ghosh Sayan , Dutta Shubham , Mondal Naba Kumar , Saha Satyajit 
Published: February 2022

Abstract
Experimental measurements and simulation of various radiation backgrounds at a new underground site have been presented. The experimental cosmic muon flux, measured at this site with the help of a muon telescope set-up, agree well with simulation results after accounting for the geometric effect of the detector assembly. The gamma ray background inside the laboratory space was measured to assess and optimize the required thickness of Lead for shielding. Neutrons, produced in the surrounding rock due to radioactive decay, followed by nuclear reactions with the rock constituents, and the faster neutrons, produced through interaction of the charged cosmic particles, propagate through the rock material to reach inside the laboratory. The neutron background flux was measured and GEANT4 simulations were carried out. The results were found to be in reasonable agreement with measurements.
The Sanford Underground Research Facility
Authors: Heise J 
Published: February 2022

Abstract
The Sanford Underground Research Facility (SURF) has been operating since 2007 supporting underground research in rare-process physics, as well as offering research opportunities in other disciplines. SURF laboratory facilities include a Surface Campus as well as campuses at the 4850-foot level (1500 m, 4300 m.w.e.) that host a range of significant physics experiments, including the LUX-ZEPLIN (LZ) dark matter experiment and the MAJORANA DEMONSTRATOR neutrinoless double-beta decay experiment. The CASPAR nuclear astrophysics accelerator recently completed the first phase of operation. Furthermore, the BHUC laboratory dedicated to critical material assays for current and future experiments has been operating since Fall 2015. Construction is underway for the Long-Baseline Neutrino Facility (LBNF) that will host the international Deep Underground Neutrino Experiment (DUNE). SURF is a dedicated research facility with significant expansion capability, and applications from new experiments are welcome.
Deviation from tri-bimaximal mixing as a result of modification of Yukawa coupling structure of constrained sequential dominance
Authors: Ganguly Joy , Hundi Raghavendra Srikanth 
Published: February 2022

Abstract
Tri-bimaximal mixing (TBM) in the neutrino sector has been obtained in constrained sequential dominance where the Yukawa couplings of righ-handed neutrinos have some particular structure. Current neutrino oscillation data suggests that neutrino mixing should deviate from TBM mixing pattern. To explain it, we propose a phenomenological model by adding some small complex parameters to the Yukawa couplings of CSD. Using this we have shown that neutrino mixing angles can deviate from their TBM values. We justify the modified form of Yukawa couplings of our work by constructing a model based on flavor symmetry.
Evaluation of event reconstruction with small-scale water Cherenkov detectors
Authors: Yamauchi K. , Ishitsuka M. , Shinoki M. , Kuze M. , Hartz M. 
Published: February 2022

Abstract
The Hyper-Kamiokande experiment is planned to start in 2027 aiming for precise measurement of neutrino oscillation using J-PARC neutrino beam including the search for CP violation in the lepton sector. The Hyper-Kamiokande detector is a 260 kiloton water Cherenkov detector. In order to achieve the precision measurement, systematic uncertainties should be suppressed. For this purpose, a new 1 kiloton scale Intermediate Water Cherenkov Detector (IWCD) is proposed to measure the neutrino flux and interaction cross section near the generation point of the neutrino beam before oscillation. Water Cherenkov Test Experiment (WCTE) is a 50 ton scale water Cherenkov detector and currently under preparation to validate the performance of IWCD. WCTE will use new photosensor called multi-PMT and study the response of small water Cherenkov detectors to electron, muon, and hadron beams at CERN. The performance of event reconstruction with the IWCD and WCTE detectors is evaluated using simulation.
Characterization of the JUNO Large-PMT readout electronics
Authors: Jelmini Beatrice , Cerrone Vanessa , Coppi Alberto , Triozzi Riccardo 
Published: February 2022

Abstract
The Jiangmen Underground Neutrino Observatory (JUNO) is a neutrino medium baseline experiment under construction in Southern China, expecting to begin data taking in 2023. JUNO is a liquid-scintillator-based detector with an active target mass of 20 kt and aims to detect and study electron antineutrinos from reactors to improve the knowledge in the field of neutrino oscillations. The scintillation light emitted by the interaction of an antineutrino in the detector is detected by a system of 17 612 20-inch Large-PMTs and 25 600 3-inch small-PMTs. The signal from the Large-PMTs is processed by the JUNO Large-PMT readout electronics, which consists of several hardware components and is partly placed underwater. Given the ambitious physics goals of JUNO, the electronic system has to meet specific requirements, and a thorough characterization is required. After describing the readout electronics, tests and results performed with a small-scale integration test facility at Laboratori Nazioni di Legnaro, Italy, are here presented and discussed.
Identification of the cosmogenic 11C background in the solar neutrino experiment Borexino
Authors: Porcelli Alessio 
Published: February 2022

Abstract
Borexino is a liquid scintillator detector situated underground in the Laboratori Nazionali del Gran Sasso in Italy. Its physics program evolves around the study of solar and geo-neutrinos. By now, Borexino has measured neutrinos from the fusion processes in the pp chain and CNO cycle. Especially for the detection of pep and CNO neutrinos, an important background is formed by the cosmogenic radio-isotope 11C that is produced by muon spallation of 12C nuclei in the scintillator.
Given the comparatively long life time (30 mins) and high rate (30 cpd and 100 ton), dedicated veto strategies had to be developed to permit the detection of pep and CNO neutrinos. The present contribution presents two veto methods. One is the well-established Three-Fold Coincidence (TFC) technique that relies on time and space correlation of muons, spallation neutrons, and radioactive 11C decays; it has been used in different implementations in all former Borexino analyses. In addition, a newly devised algorithm searching for time-correlated bursts of 11C events will be presented, highlighting as well the potential gain from a combined application with the TFC technique.
Using isotopically enriched detectors to perform CEvNS measurements
Authors: Sanchez Garcia G. 
Published: February 2022

Abstract
We propose the use of an array of different isotopically enriched detectors for a precise measurement of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS). We show the impact that correlations between systematic uncertainties can have in different applications. Here we focus on testing the quadratic dependence in the number of neutrons of the CEvNS cross section, the determination of the neutron rms radius of target materials, and constraining Non-Standard Interactions. We exemplify our method with germanium based detectors, but the applicability can be extended to other technologies such as silicon and nickel.
The search for neutrinoless positron emitting electron capture (0υECβ
+) of 120Te with CUORE
Authors: Campani A 
Published: February 2022

Abstract
CUORE (Cryogenic Underground Observatory for Rare Events) is a tonne-scale experiment located at the LNGS with the main scientific goal of searching for neutrinoless double beta decay in 130Te. The detector consists of TeO2 crystals operated as cryogenic calorimeters. The use of natural tellurium allows us to search for other isotopes rare decays. The neutrinoless positron emitting electron capture (0υECβ
+) of 120Te (natural abundance 0.09(1)%) has a clear signature from the 511-keV annihilation γ rays. We present an analysis of this process based on a new algorithm to perform the simultaneous spectral fit over five selected decay scenarios. Each scenario is characterized by a set of crystals simultaneously interested by a detectable energy release. We describe the background structure modeling and tests of linearity we performed on the fit algorithm. We finally present the limit setting sensitivity and the next steps of this study, including systematics accounting.
What is a breakdown of continuous component hidden under 4.4-MeV gamma-ray peak from the AmBe source?
Authors: Wada Kohei , Minamino Akihiro , Ito Hiroshi , Ommura Yuga , Ishitsuka Masaki , Yano Takatomi 
Published: February 2022

Abstract
Americium-Beryllium (AmBe) is a typical source to be use for a calibration of neutron detection efficiency in underground astroparticle physics experiments. It has been considered to emit a neutron and a 4.4 MeV gamma ray simultaneously, which allows us to select events with a neutron by tagging the 4.4 MeV gamma-ray signal. This time, we focus on the component of high energy tail above 4.4 MeV peak in a deposited energy distribution, under the measurement with inorganic scintillators. In neutron tagging technique with AmBe surrounded by BGO for gamma tagging, there is a possibility of underestimating the tagging efficiency when there are neutrons stopped at BGO. We aim to understand the breakdown of component of the high energy tail from AmBe to contribute reduction of a systematic uncertainty related to the neutron detection efficiency for the astroparticle physics. We will present a result of measurements for neutrons and gamma rays using NaI(Tl) and liquid scintillation detectors.
Operation update and Calibration plan for the Scintillating Bubble Chamber (SBC) Collaboration’s 10-kg LAr detector at Fermilab
Authors: Pal Sumanta 
Published: February 2022

Abstract
The Scintillating Bubble Chamber (SBC) Collaboration is developing a novel detection technique aimed at detecting low-mass (0.7-7 GeV/c2) WIMP interactions and coherent elastic neutrino-nucleus scattering (CEυNS) of reactor neutrinos. Using a target volume composed of super-heated argon with a tiny amount of dissolved xenon, the nucleation signal from electron recoils (the limiting factor for low-threshold studies in bubble chambers) is suppressed, allowing for the exploration of new parameter space. Particle interactions with the target fluid can lead to the production of heat (bubbles) and scintillation light. By combining these observables, the SBC Collaboration is aiming to reach a threshold of 100 eV for nuclear recoil detection with discrimination, to be demonstrated for the first time in a 10-kg device at Fermilab.
In this paper, the current activities at Fermilab towards the commissioning and operation of the detector will be presented as well as the calibration run plan, which aims to measure the response of this chamber to both electron- and nuclear-recoils at the target 100 eV threshold.
Synthetic data for the study of the CUORE detector response function
Authors: Gianvecchio’ Alberto 
Published: February 2022

Abstract
CUORE (Cryogenic Underground Observatory for Rare Events) is a ton-scale experiment located at LNGS (Laboratori Nazionali del Gran Sasso) in Italy whose goal is to search for neutrino-less double beta decay (0υββ) in 130Te.
CUORE exploits an array of 988 TeO2 crystals operated as Low-Temperature Detectors (LTDs) at 10 mK. These detectors show an excellent energy resolution, making the experiment one of the most competitive 0υββ searches in the world. In this scenario, the proposed research deals with the generation of synthetic (mock) data for the study of the CUORE detector response function. The production of synthetic data is a new tool we designed to consider all the missing information from a Montecarlo simulation: the detector non-idealities, as well as noise and pulse shape. The mock data are processed with the CUORE official analysis software, allowing us the evaluation of its impact on the final results.
Non-unitarity and sterile neutrinos at the DUNE near detector
Authors: Urrea Salvador 
Published: February 2022

Abstract
We study the capabilities of the DUNE near detector to probe the 3+1 sterile formalism and the non-unitarity of the leptonic sector. We add to the current analyses in the literature, the use of the charged current events for the υτ appearance channel and the consideration of the energy spectral uncertainty (shape uncertainty) for the different channels which plays an important role, especially at the near detector, and has been usually overlooked in the literature. We find that even with this more conservative and realistic approach, we still obtain an improvement in the sensitivity with respect to the current bounds.
Exploring the Violation of Lorentz Invariance using Atmospheric Neutrinos at INO-ICAL
Authors: Sahoo Sadashiv , Kumar Anil , Agarwalla Sanjib Kumar 
Published: February 2022

Abstract
We explore the signature of Lorentz Invariance Violation (LIV) in the Standard Model Extension framework by observing the atmospheric neutrinos and antineutrinos separately with the help of magnetized Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO). Using 500 kt-yr exposure of ICAL, we place stringent bounds on the CPT-violating LIV parameters α

μτ
, α

ॉμ
, and aeT
(one-at-a-time) at 95% C.L. (1 d.o.f). We demonstrate the advantages of charge identification capability and hadron energy information at ICAL while constraining these LIV parameters. We also explore interesting correlations among various LIV parameters.
Spin and spin-flavor oscillations due to neutrino charge radii interaction with an external environment
Authors: Shakhov Vadim , Stankevich Konstantin , Studenikin Alexander 
Published: February 2022

Abstract
We derive the effective neutrino evolution Hamiltonian and corresponding expressions for the neutrino flavour and spin-flavour oscillation probabilities accounting for the neutrino interactions with an external electric current though the neutrino charge radius and anapole moment. The obtained results are of interest for neutrino astrophysical applications.
Guidelines for optimal design of radio-frequency in-vacuum coaxial transmission line for mirror cleaning service in ITER diagnostics
Authors: Danisi A. , Vayakis G. , Walsh M. 
Published: February 2022

Abstract
Several optical diagnostics in the ITER fusion reactor make use of big mirrors which are placed within the ITER vacuum vessel (VV), and therefore cannot have high accessibility. Plasma deposits developing on these mirrors may hinder the reflectivity of the mirror themselves, requiring a remote cleaning operation. The radio-frequency (RF) discharge mirror cleaning service operates a plasma discharge in the vicinity of the mirror, eroding the deposit layer and therefore cleaning the mirror remotely. In order to achieve this, RF power needs to be sent from outside the VV to the mirror, using a transmission line. Very stringent design requirements are applicable to the design of this RF line, such as vacuum compatibility, high power handling, low losses, overall matching, no cable over-heating, etc. This paper analytically addresses the design optimization of the RF mirror cleaning transmission line, taking into account ITER requirements, in order to give robust guidelines for the possible ad-hoc cable design adaptation that is to be undertaken case-by-case. The design guidelines are based on underlying transmission line theory, from which a set of design equations are drawn. The optimal design is achieved using design optimization considerations in the available design space. These guidelines are considered to be a useful design tool for optical diagnostics requiring mirror cleaning operation, and are aimed at harmonising the transmission line design procedures across the different cases.
Increasing spatiotemporal proximity of heat and precipitation extremes in a warming world quantified by a large model ensemble
Authors: Raymond Colin , Suarez-Gutierrez Laura , Kornhuber Kai , Pascolini-Campbell Madeleine , Sillmann Jana , Waliser Duane E 
Published: February 2022

Abstract
Increases in climate hazards and their impacts mark one of the major challenges of climate change. Situations in which hazards occur close enough to one another to result in amplified impacts, because systems are insufficiently resilient or because hazards themselves are made more severe, are of special concern. We consider projected changes in such compounding hazards using the Max Planck Institute Grand Ensemble under a moderate (RCP4.5) emissions scenario, which produces warming of about 2.25 °C between pre-industrial (1851–1880) and 2100. We find that extreme heat events occurring on three or more consecutive days increase in frequency by 100%–300%, and consecutive extreme precipitation events increase in most regions, nearly doubling for some. The chance of concurrent heat and drought leading to simultaneous maize failures in three or more breadbasket regions approximately doubles, while interannual wet-dry oscillations become at least 20% more likely across much of the subtropics. Our results highlight the importance of taking compounding climate extremes into account when looking at possible tipping points of socio-environmental systems.