bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exploring NSI using oscillation dip and valley in atmospheric neutrino experiments
Authors: Kumar Anil , Khatun Amina , Agarwalla Sanjib Kumar , Dighe Amol 
Published: February 2022

Abstract
We present a new approach to probe flavor-changing neutral-current non-standard neutrino interaction parameter εμτ
using the oscillation dip and valley features. We use the simulated up/down ratio of reconstructed muons events at the proposed Iron Calorimeter (ICAL) detector at the India-based Neutrino Observatory to demonstrate that in presence of NSI parameter ε
μτ, the oscillation dip location shifts and oscillation valley bends. Utilizing the charge identification capability of ICAL, the opposite shifts in the oscillation dip locations and the contrast in the oscillation valley curvatures for μ−
and μ+ can be used to place 90% C.L. bounds of about 2% on |εμτ| using 500 kt• yr exposure. In our procedure, we take care of statistical fluctuations, systematic errors, and uncertainties in neutrino oscillation parameters.
Improving Hyper-Kamiokande sensitivity to CP violation with high precision near detector electron neutrino cross-section measurements
Authors: Naseby Charlie 
Published: February 2022

Abstract
The next generation long-baseline neutrino oscillation experiment, Hyper-Kamiokande, will consist of a 260 kt underground water Cherenkov detector, placed 295 km from the neutrino source at J-PARC. This is generated by a 1.3 MW proton beam striking a target. In addition, a suite of near detectors, both on and off-axis will be used. With this, Hyper-Kamiokande aims to perform precision measurements of the parameters governing neutrino oscillations, the observation of CP violation being one of the main aims of the experiment. To achieve these goals, Hyper-Kamiokande will require smaller systematic uncertainties than in any previous long-baseline experiment.
Many of these systematic uncertainties are related to neutrino-nucleus interactions, and can be constrained by a detector placed close to the beam production point. For this, the Hyper-Kamiokande long-baseline programme includes an Intermediate Water Cherenkov Detector, the IWCD. This is a 500 tonne water Cherenkov detector located 1 km from the beam production point. This detector is able to move within a vertical shaft and span a range of off-axis angles relative to the beam, from 1 to 4 degrees. The combination of large target mass, precise water Cherenkov reconstruction and off-axis angle flux dependence allows for high purity and high statistics electron neutrino and electron antineutrino samples. This paper describes how this detector can be used to constrain the major systematic uncertainty affecting the measurement of CP violation at Hyper-Kamiokande: the electron neutrino and antineutrino interaction cross section.
Measurement of the 136-Xe ββ2υ half-life in NEXT-White
Authors: Usón A. 
Published: February 2022

Abstract
The NEXT (Neutrino Experiment with a Xenon TPC) collaboration searches for the neutrino-less double beta decay (0υββ) of 136Xe at the Laboratorio Subterráneo de Canfranc (LSC). A first large-scale prototype of a high-pressure Xenon gas electroluminescent TPC, NEXT-White, operated at the LSC from 2016 to 2021. In this analysis, the measurement of the half-life of the two-neutrino mode of the double beta decay (2νυβ) will be presented. For this measurement, two novel techniques in the field have been used: a highly refined topological reconstruction of events that improves the background rejection, and a direct subtraction of the ββ backgrounds, measured with 136Xe-depleted data. These techniques allow for background-model-dependent and background-model-independent results, demonstrating the robustness of the 2νυβ half-life measurement and the unique capabilities of NEXT. The final value presented corresponds to a half-life of T-2υ
1/2 = 2.34+0’®0 (stat)-0’37(sys) x 1021 year. After the completion of the NEXT-White programme, the NEXT-100 apparatus will start its commissioning at the second half of 2022. Holding 100 kg of 136Xe at 15 bar, this detector will perform the first competitive 0νυβ search within the NEXT roadmap. As validated with NEXT-White, NEXT- 100 will set a limit in m-ββ of 70-130 meV after 5 years of data taking.
Recent Neutrino Cross-section Results from MicroBooNE
Authors: Ren Lu 
Published: February 2022

Abstract
MicroBooNE is a liquid argon time projection chamber that operates in the Booster Neutrino Beam at Fermilab. The detector provides high-resolution imaging of neutrino interactions with a low threshold and full angular coverage. Thanks to a high event rate and several years of continuous operation, the MicroBooNE collaboration has obtained the world’s largest dataset of neutrino-argon scattering events. A detailed understanding of these interactions, especially the impact of nuclear physics effects, will be critical to the success of future precision neutrino oscillation efforts, particularly the argon-based Deep Underground Neutrino Experiment (DUNE) and the Short-Baseline Neutrino (SBN) program. This talk presents an overview of the latest neutrino-argon cross section measurements in MicroBooNE, including measurements of protons produced in muon neutrino interactions, measurements of the electron neutrino inclusive cross section, and progress towards measurements of rare channels.
Investigation of β+β+, β+EC, EC/EC decay of 106Cd with the spectrometer TGV-2
Authors: Rukhadze N I , Gascon J , Gusev K N , Klimenko A A , Fürst M , Rozov S V , Rukhadze E , Salamatin A V , Šimkovic F , Shitov Yu A , Štekl I , Timkin V V , Yakushev E A 
Published: February 2022

Abstract
The III phase of experiment TGV-2 to search for β+β+, β+EC, EC/EC decay of 106Cd was performed at the Modane underground laboratory (LSM, France, 4800 m w.e.). 16 foils (∼23.2 g) of enriched 106Cd were measured using the 32-detector low background HPGe spectrometer TGV-2 during 42500 h. New limit on 2νEC/EC decay of 106Cd to the ground 0+ state of 106Pd - T1/2 > 7.2 × 1020 y at 90% C.L was obtained. The limits on 2νβ+β+, 2νβ+EC decay of 106Cd, and 2νECEC decay of 106Cd to excited states of 106Pd were significantly improved in comparison with previous phase II of the TGV-2 experiment.
SNO+
Authors: Chen Mark C. 
Published: February 2022

Abstract
SNO+ is an operating liquid scintillator neutrino detector. Filling with liquid scintillator was completed in April 2021. Previously, SNO+ took water-filled data and also made measurements of backgrounds during scintillator partial-fill. These measurements (included physics results) enable SNO+ to quantify backgrounds for our final objective, the search for neutrinoless double beta decay when tellurium is loaded in the liquid scintillator detector at 0.5% by weight. This article highlights several measurements made by SNO+ and summarizes the status and outlook of the experiment.
Study of Ocean Bottom Detector for observation of geo-neutrino from the mantle
Authors: Sakai T. , Inoue K. , Watanabejg H. , McDonough W.F. , Abe N. , Araki E. , Kasaya T. , Kyo M. , Sakurai N. , Uek K. , Yoshida H. 
Published: February 2022

Abstract
Observation of anti-neutrinos emitted from radioactive isotopes inside Earth(geo-neutrinos) brings direct information on the Earth’s chemical composition and its heat balance, which strongly relate to the Earth’s dynamics. To date, two experiments (KamLAND and Borexino) have measured geo-neutrinos and constrained the range of acceptable models for the Earth’s chemical composition, but distinguishing the mantle flux by land-based detectors is challenging as the crust signal is about 70% of the total anti-neutrino flux. Given the oceanic crust is thinner and has lower concentration of radioactive elements than continental crust, geo-neutrino detector in the ocean, Ocean Bottom Detector (OBD), makes it sensitive to geo-neutrinos originating from the Earth’s mantle. Our working group was jointly constructed from interdisciplinary communities in Japan which include particle physics, geoscience, and ocean engineering. We have started to work on technological developments of OBD. We are now developing a 20 kg prototype liquid scintillator detector. This detector will undergo operation deployment tests at 1 km depth seafloor in 2022.
T2K latest results on neutrino-nucleus cross sections
Authors: Jenkins Sam 
Published: February 2022

Abstract
Neutrino interaction cross section measurements are of high importance, in improving understanding for both oscillation measurements and nuclear modelling. The T2K experiment features a near detector complex with multiple detectors, providing multiple different nuclear targets at differing mean neutrino energies due to the off-axis configurations used. Along with constraining the flux for oscillation measurements, these near detectors provide the opportunity for a large programme of neutrino cross section measurements. Some recent such measurements are described in this proceeding.
The Hyper-Kamiokande Experiment
Authors: Wilson J.R. 
Published: February 2022

Abstract
The Hyper-Kamiokande experiment consists of a 260 kt underground water Cherenkov detector with a fiducial volume more than 8 times larger than that of Super-Kamiokande. It will serve both as a far detector of a long-baseline neutrino experiment and an observatory for astrophysical neutrinos and rare decays. The long-baseline neutrino experiment will detect neutrinos originating from the upgraded 1.3 MW neutrino beam produced at the J-PARC accelerator 295 km away. A near detector suite, close to the accelerator, will help characterise the beam and minimise systematic errors. The experiment is now under construction and due to start data taking in 2027. The experiment will investigate neutrino oscillation phenomena (including CP-violation and mass ordering) by studying accelerator, solar and atmospheric neutrinos, neutrino astronomy (solar, supernova, supernova relic neutrinos) and nucleon decays. This paper gives an overview of the Hyper-Kamiokande experiment, its physics goals and the current status.
International Particle Physics Outreach Group: Engaging the world with science
Authors: Goldfarb S. 
Published: February 2022

Abstract
The International Particle Physics Outreach Group (IPPOG) is a global network of researchers, educators and communication specialists working together to develop and share best practices in science education and public engagement. Our major activities include organisation of International Particle Physics Masterclasses and the Global Cosmics portal, promotion of International Muon Week and International Cosmic Day, and participation in activities ranging from public talks, festivals, exhibitions, teacher training, student competitions, and open days at local institutions. These independent activities, often carried out in a variety of languages to public with a variety of backgrounds, all serve to gain the public trust and to improve worldwide understanding and support of science.
The International Dark Matter Day in Argentina
Authors: Lovino M.B. , Bertou X. 
Published: February 2022

Abstract
The International Dark Matter Day is celebrated worldwide on October 31 every year since 2017. In Argentina, it was organised for the first time in 2019 in an outreach effort coordinated by the ANDES deep underground laboratory. In 2019, we started a call for art students to propose an audiovisual piece on Dark Matter, asked about whether basic science was important for Argentina and coordinated the projection of the full dome “Phantom of the Universe” video in 4 digital planetariums in Argentina. In 2020, with no possibility of public event due to the pandemic, we repeated the audiovisual art call and organised a call for drawings and questions about Dark Matter for kids, reaching kids from Brazil and Mexico in addition to Argentina, among other activities. We describe here some of the answers obtained to the calls and how these answers can be used to understand better the preconceptions permeating society and therefore communicate better abstract topics such as Dark Matter.
Callio Lab – the deep underground research centre in Finland, Europe
Authors: Joutsenvaara J , Holma M , Kotavaara O , Puputti H J 
Published: February 2022

Abstract
Pyhäsalmi, in the Town of Pyhäjärvi, hosts one of the northernmost deep underground laboratories in Europe, the Callio Lab. Its origins are in underground physics (Centre for Underground Physics in Pyhäsalmi, CUPP), but gradually it has turned into a multi- and transdisciplinary research environment utilising both the surface and underground. Besides research, the infrastructure is open for business and innovation under the Callio – Mine for Business. The pre-investment for an underground pumped-hydro storage facility to be built at the area utilising the existing tunnel network for construction has been made. This investment ensures the existing and future utilisation of the underground and surface facilities.
Measurement of the neutron flux at the Canfranc Underground Laboratory with HENSA
Authors: Orrigo S E A , Tain J L , Mont-Geli N , Tarifeño-Saldivia A , Fraile L M , Grieger M , Agramunt J , Algora A , Bemmerer D , Calviño F , Cortés G , DeBlas A , Dillmann I , Domínguez Bugarín A , García R , Nacher E , Tolosa A 
Published: February 2022

Abstract
We have performed a long-term measurement of the neutron flux with the High Efficiency Neutron Spectrometry Array HENSA in the Hall A of the Canfranc Underground Laboratory. The Hall A measurement campaign lasted from October 2019 to March 2021, demonstrating an excellent stability of the HENSA setup. Preliminary results on the neutron flux from this campaign are presented for the first time. In Phase 1 (113 live days) a total neutron flux of 1.662 × 10−5 cm−2 s−1 is obtained. Our results are in good agreement with those from our previous shorter measurement where a reduced experimental setup was employed.
The new underground facility in Korea, Yemilab
Authors: Park Kangsoon 
Published: February 2022

Abstract
A new underground facility called Yemilab with a depth of 1,000 m will be constructed for studies on neutrinos and dark matter search. The new underground facility is located within the site of an iron mine in Jeongseon-gun, Gangwon-do, South Korea. Since the mine has a vertical shaft with a diameter of 6 m and a length of 600 m, the facility uses this shaft. The construction of the new underground facility consists of a cage for passengers (man-cage) to enter the underground, excavation of tunnels with a total area of 10,000 m2 including a dedicated area of 2,600 m2 for experiments, and construction of electrical and mechanical facilities for operation. The construction is carried out in two phases. In the first phase, man-cage manufacturing/installation and most of the tunnel excavation were carried out. In the second stage, excavation of a large cylindrical pit with dimensions of 20 m (D) × 20 m (H) is being carried out together with the installation of a 2 MW power supply and construction of facilities for ventilation, drainage, and fire prevention. The first phase construction started in 2018 and was completed in August 2020. The second phase construction started in May 2021 and is going to be completed in May 2022.
A progress of upgrading α-ray imaging chamber in a low background radioactivity
Authors: Ito Hiroshi , Ishiura Hirohisa , Nakamura Kiseki D. , Miuchi Kentaro 
Published: February 2022

Abstract
Precise measurements of radioactive impurity concentration in the detector materials have been established for various underground particle physics experiments. It is also important to measure the surface radioactive contamination on these materials because their decay products would potentially reduce the fiducial volume of the detector and would also produce background sources via radon emanation. In this study, descriptions on an α-ray imaging chamber based on a gaseous micro-time-projection chamber are reported. A detector upgrade to improve the sensitivity by a suppression of the background rate and a demonstration of alpha-ray imagings are also described.
A Geant4-based model for the TRISTAN detector
Authors: Nava A , Biassoni M , Pozzi S , Gugiatti M , Carminati M , Fiorini C , King P , Mertens S , Lechner P 
Published: February 2022

Abstract
The TRISTAN project is the upgrade of the KATRIN experiment designed for the search of sterile neutrinos by replacing the current KATRIN detector with a multipixel SDD (Silicon Drift Detector) matrix. We have characterized SDDs response to electrons using a SEM (Scanning Electron Microscope) as an electron source and a Geant4-based simulation whose output is processed with an empirical function to reproduce data. We have crosschecked this model by reconstructing backscattering measurements obtained using a radioactive electron source.
Astroparticle physics obtaining more attention from a new type of audience
Authors: Holma M , Joutsenvaara J , Kuusiniemi P 
Published: February 2022

Abstract
Cosmic-ray muography is a group of density-imaging techniques based on directional measurements of muon attenuation in liquid or solid media. The foundations of this emerging multidisciplinary research field were already laid in the 1950s-1970s, but the number of applications and research publications has witnessed a constant increase only in the last 15 years. We describe here what is currently happening on different fronts, where we may go next, and what this means for astroparticle physicists.
Cosmogenic background suppression at the ICARUS using a concrete overburden
Authors: Behera Biswaranjan 
Published: February 2022

Abstract
The ICARUS detector will search for LSND like neutrino oscillations exposed at shallow depth to the FNAL BNB beam in the context of the SBN program. In the approved FNAL SBN experiment the impact of cosmic rays is mitigated by a 4π Cosmic Ray Tagger (CRT) detector encapsulating the TPCs inside the pit and by a ∼ 3 m concrete overburden both for the near (SBND) and the far (ICARUS) detectors. Cosmic backgrounds rejection is particularly relevant for the ICARUS detector. Due to its larger size and distance from target compared to SBND, in ICARUS the neutrino signal/cosmic background ratio is 40 times more unfavorable with in addition a greater than 3 times larger out-of-spill comics rate. In this paper, I will be addressing the question of a problematic background to genuine neutrino events especially into the electron neutrino appearance analysis by a detailed MonteCarlo calculation of the cosmic rays crossing the ICARUS detector.
Directional measurement in Borexino: Calibration of Cherenkov photons in a liquid scintillator detector using gamma sources
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. The main goal of Borexino is to measure solar neutrinos via elastic scattering off electrons in the liquid scintillator. The electrons are then detected by the photo-multiplier tubes via isotropically emitted scintillation photons. However, in the first few nanoseconds after a neutrino interaction, Cherenkov photons (<1% of all detected photons) are also produced in the scintillator for electrons with kinetic energy >0.16 MeV. Borexino has successfully obtained the first directional measurement of sub-MeV solar neutrinos, and the 7Be solar neutrino interaction rate, through the exploitation of this Cherenkov light signal. This is performed through the so-called Correlated and Integrated Directionality (CID) method, by correlating the first few detected photons to the well-known position of the Sun and integrating the angle for a large number of events. This measurement requires a calibration of the relative time differences between Cherenkov and scintillation photons. In Borexino, we obtain this through gamma calibration sources namely, 40K and 54Mn. A group velocity correction estimated through the gamma sources is then used for the solar neutrino analysis. This article will discuss the analysis strategy and methods used for this calibration, and provide motivation for a dedicated Cherenkov calibration in next-generation liquid scintillator detectors.
Inflationary Dynamics of Tsallis Holographic Scalar Field Models in Chern-Simons Modified Gravity
Authors: Chakraborty Gargee , Chattopadhyay Surajit 
Published: February 2022

Abstract
The present study report reconstruction schemes for tachyon scalar field model of Dark Energy through Tsallis holographic dark fluid under the framework of Chern-Simons modified gravity. Emergent scale factor has been assumed. Reproducing the conservation equation for a coupled model with interaction term we have reconstructed the scalar field and the corresponding potential. The reconstructed energy density have been plotted for the case. Evolutionary behaviour of potential for the case have been pictorially presented.
Neutrino Masses and Leptogenesis in a Le
− Lμ
− Lτ
model
Authors: Marciano Simone 
Published: February 2022

Abstract
We present a simple extension of the Standard Model with three right-handed neutrinos in a SUSY framework, with an additional U(1)F abelian flavor symmetry with a non standard leptonic charge for lepton doublets and arbitrary right-handed charges. We show how it is possible to provide the correct predictions for the mixing angles of the PMNS matrix and for the

r
=
Δ

m

sun

2

/
Δ

m

atm

2

parameter with a moderate fine tuning. The baryon asymmetry of the Universe is generated via thermal leptogenesis through CP-violating decays of the heavy right-handed neutrinos. We present a detailed numerical solution of the relevant Boltzmann equation accounting for the impact of the distribution of the asymmetry in the lepton flavors.
Nuclear de-excitation associated with neutrino-carbon interactions
Authors: Abe Seisho 
Published: February 2022

Abstract
Neutrino interactions in low energy regions below 30 MeV, where the experimental searches for supernova relic neutrino are conducted, have a large uncertainty due to complicated nuclear effects such as the Pauli blocking effect and de-excitation of a residual nucleus. Understanding the effect of nuclear de-excitation is especially critical since neutrons measured by liquid scintillator detectors can be emitted via de-excitation. We build a systematic method to predict nuclear de-excitation associated with neutrino-carbon interaction using TALYS and Geant4. This prediction is combined with the results of neutrino event generators, and we find a large increase in neutron multiplicity.
Probing the magnitude of asymmetries in the lateral density distribution of electrons in EAS
Authors: Basak Animesh , Dey Rajat K. 
Published: February 2022

Abstract
The lateral density distributions (LDD) of inclined cosmic ray air shower are asymmetric and the corresponding iso-density contours are of increasing eccentric ellipses with zenith angles of different showers. The polar asymmetry of the iso-density contours introduces a significant shift of the EAS core, which is quantitatively expressed as a gap length (GL) parameter between the EAS core and the center of the modified density pattern consisting of several equi-density ellipses. The LDD of EAS particles is usually approximated by a particular type of lateral density function (LDF) which is generally assumed to be polar symmetric about the EAS axis, and cannot describe the asymmetric LDDs accurately. A polar angle-dependent modified lateral density function of EASs has been derived analytically by considering the effect of attenuation of EAS particles in the atmosphere. From the simulation studies, it has been found that the GL manifests sensitivity to the cosmic ray mass composition. The cosmic ray mass sensitivity of the lateral shower age is also re-examined by applying the modified LDF to the simulated data.