bluuebunny/crossref_metadata_2025_split huggingface dataset:
First results on low-mass dark matter from the CRESST-III experiment
Authors: Petricca F , Angloher G , Bauer P , Bento A , Bucci C , Canonica L , Defay X , Erb A , Feilitzsch F v , Iachellini N Ferreiro , Gorla P , Gütlein A , Hauff D , Jochum J , Kiefer M , Kluck H , Kraus H , Lanfranchi J C , Langenkämper A , Loebell J , Mancuso M , Mondragon E , Münster A , Pagliarone C , Potzel W , Pröbst F , Puig R , Reindl F , Rothe J , Schäffner K , Schieck J , Schönert S , Seidelf W , Stahlberg M , Stodolsky L , Strandhagen C , Strauss R , Tanzke A , Thi H H Trinh , Türkoğlu C , Ulrich A , Usherov I , Wawoczny S , Willers M , Wüstrich M 
Published: January 2020

Abstract
The CRESST experiment (Cryogenic Rare Even Search with Superconducting Thermometers), located at Laboratori Nazionali del Gran Sasso in Italy, searches for dark matter particles via their elastic scattering off nuclei in a target material. The CRESST target consists of scintillating CaWO4 crystals, which are operated as cryogenic calorimeters at millikelvin temperatures. Each interaction in the CaWO4 target crystal produces a phonon signal and a light signal that is measured by a second cryogenic calorimeter. Since the CRESST-II result in 2015, the experiment is leading the field of direct dark matter search for dark matter masses below 1.7 GeV/c
2, extending the reach of direct searches to the sub-GeV/c
2 mass region. For CRESST-III, whose Phase 1 started in July 2016, detectors have been optimized to reach the performance required to further probe the low-mass region with unprecedented sensitivity. In this contribution the achievements of the CRESST-III detectors will be discussed together with preliminary results and perspectives of Phase 1.
Status and Physics of the SHiP experiment at CERN
Authors: Bick Daniel 
Published: January 2020

Abstract
SHiP is a new general purpose fixed target facility, whose Technical Proposal has been recently reviewed by the CERN SPS Committee and by the CERN Research Board. The two boards recommended that the experiment proceeds further to a Comprehensive Design phase in the context of the new CERN Working group ”Physics Beyond Colliders”, aiming at presenting a CERN strategy for the European Strategy meeting of 2019. In its initial phase, the 400 GeV proton beam extracted from the SPS will be dumped on a heavy target with the aim of integrating 2 × 1020 pot in 5 years. A dedicated detector, based on a long vacuum tank followed by a spectrometer and particle identification detectors, will allow probing a variety of models with light long-lived exotic particles and masses below O(10) GeV/c2. The main focus will be the physics of the so-called Hidden Portals, i.e. search for Dark Photons, Light scalars and pseudo-scalars, and Heavy Neutrinos. The sensitivity to Heavy Neutrinos will allow for the first time to probe, in the mass range between the kaon and the charm meson mass, a coupling range for which Baryogenesis and active neutrino masses could also be explained. Another dedicated detector will allow the study of neutrino cross-sections and angular distributions. ντ
deep inelastic scattering cross sections will be measured with a statistics 1000 times larger than currently available, with the extraction of the F
4 and F
5 structure functions, never measured so far and allow for new tests of lepton non-universality with sensitivity to BSM physics.
Design and status of the Micro-X microcalorimeter sounding rocket
Authors: Hubbard A J F , Adams J S , Baker R , Bandler S R , Bastidon N , Danowski M E , Doriese W B , Figueroa-Feliciano E , Goldfinger D C , Heine S N T , Hilton G C , Kelley R L , Kilbourne C A , Manzagol R E , McCammon D , Okajima T , Porter F S , Reintsema C D , Serlemitsos P , Smith S J , Wikus P 
Published: January 2020

Abstract
The Micro-X High Resolution Microcalorimeter X-Ray Imaging Rocket is a sounding rocket mission that will observe Supernova Remnants and search for keV-scale sterile neutrino dark matter. Micro-X will combine the excellent energy resolution of Transition Edge Sensor microcalorimeters with the imaging capabilities of a conical imaging mirror to map extended and point X-ray sources with an unprecedented combination of energy and spatial resolution. The payload has been designed to operate in the challenging conditions of a sounding rocket flight and to achieve sensitive results, in a single five-minute exposure, for each of these science goals. Micro-X’s unique design considerations are presented here, along with the status of the instrument and projections for the upcoming flights. The first Micro-X flight in 2018 will observe the Puppis A supernova remnant, where it will attain nearly 13,000 counts in the 300 s exposure. The second Micro-X flight will observe the Galactic Center to search for keV-scale dark matter and explore the nature of the unexplained 3.5 keV line observed by X-ray satellites.
MADMAX: A new way of probing QCD Axion Dark Matter with a Dielectric Haloscope – Foundations
Authors: Knirck Stefan 
Published: January 2020

Abstract
In contrast to WIMPs, light Dark Matter candidates have increasingly come under the focus of scientific interest. In particular the QCD axion is also able to solve other fundamental problems such as CP-conservation in strong interactions. Galactic axions, axion-like particles and hidden photons can be converted to photons at boundaries between materials of different dielectric constants under a strong magnetic field. Combining many such surfaces, one can enhance this conversion significantly using constructive interference and resonances. The proposed MADMAX setup containing 80 high dielectric disks in a 10 T magnetic field would probe the well-motivated mass range of 40–400
μeV, a range which is at present inaccessible by existing cavity searches. We present the foundations of this approach and its expected sensitivity.
MADMAX: A new road to axion dark matter detection
Authors: Majorovits B. 
Published: January 2020

Abstract
The axion is a hypothetical low-mass boson predicted by the Peccei-Quinn mechanism solving the strong CP problem. It is naturally also a cold dark matter candidate if its mass is below ∼1 meV, thus simultaneously solving two major problems of nature. All existing experimental efforts to detect QCD axions focus on a range of axion masses below ∼25 μeV. The mass range above ∼40 μeV, predicted by modern models in which the Peccei-Quinn symmetry was restored after inflation, could not be explored so far. The MADMAX project is designed to be sensitive for axions with masses (40–400) μeV. The experimental design is based on the idea of enhanced axion-photon conversion in a system with several layers with alternating dielectric constants. The concept and the proposed design of the MADMAX experiment are discussed. Measurements taken with a prototype test setup are discussed. The prospects for reaching sensitivity enough to cover the parameter space predicted for QCD dark matter axions with mass in the range around 100 μeV is presented.
Study of PeV neutrinos around dwarf galaxies near giant lobes of Centaurus A
Authors: Aguilar-Ruiz E. , Fraija N. , Galván-Gámez A. , Diego De , Marinelli A. 
Published: January 2020

Abstract
The origin of recently discovered PeV neutrinos is an unsolved problem. In this work we consider a hadronic scenario to produce PeV neutrinos from a region around giant lobes of Centaurus A. Although ultrahigh-energy cosmic rays (UHECRs) are accelerated and confined by giant lobes, they can escape to be later injected in the inter-group medium where galaxies near the giant lobes provides the condition to confine them. UHECRs interact with low-energy photons and protons producing high-energy photons and neutrinos. We found that although the IC35 event cannot be generated inside the giant lobes, this PeV neutrino might be created in galaxies close to the Lobes of Cen A.
Caliope: a search for CPT-violation in o-ps
Authors: Bartram C , Henning R 
Published: January 2020

Abstract
CALIOPE, or CP(T) Aberrant Leptons in ortho-Positronium Experiment, is a tabletop search for fundamental symmetry violations, including CP- and CPT-violation, in ortho-positronium (o-Ps). We use a tagged 22Na source adjacent to a cylinder of aerogel to generate o-Ps at the center of a cylindrical array of 24 NaI(Tl) bars. We search for CPT - violating angular correlations in the gamma rays emitted in the decay of o-Ps. With an angular acceptance of 75% of 4π, and the ability to acquire statistics over a longer period of time, CALIOPE will improve upon the limit set by previous experiments. The experimental setup can also be used in a search for CP-violation in o-Ps with the addition of an electromagnet. We describe the design of the experiment, results from a characterization of the systematics for the CPT- and CP-violating measurements, and a demonstration of the DAQ.
Data selection strategy for solar neutrino analysis with Borexino
Authors: Caprioli S , Ghiano C , Re A , Redchuck M 
Published: January 2020

Abstract
The Borexino collaboration has recently released the first simultaneous measurement of the interaction rates of pp, 7Be and pep solar neutrinos. This result was made possible by the unprecedented low background of the scintillator during Phase-II, together with new data analysis techniques. We present the data selection strategy of the Borexino solar neutrino analysis: we describe how we select the neutrino-like scintillation events according to event-based cuts which eliminate most of the external and cosmogenic backgrounds. We describe also how the spatial distribution of events and a β+/β− pulse shape discrimination variable are used in a multivariate fit approach to additionally constrain the residual cosmogenic 11C and external backgrounds.
Speeding up complex multivariate data analysis in Borexino with parallel computing based on Graphics Processing Unit
Authors: Ding X F , Vishneva A , Penek Ö , Marcocci S 
Published: January 2020

Abstract
A spectral fitter based on the graphics processor unit (GPU) has been developed for Borexino solar neutrino analysis. It is able to shorten the fitting time to a superior level compared to the CPU fitting procedure. In Borexino solar neutrino spectral analysis, fitting usually requires around one hour to converge since it includes time-consuming convolutions in order to account for the detector response and pile-up effects. Moreover, the convergence time increases to more than two days when including extra computations for the discrimination of 11C and external γs. In sharp contrast, with the GPU-based fitter it takes less than 10 seconds and less than four minutes, respectively. This fitter is developed utilizing the GooFit project with customized likelihoods, pdfs and infrastructures supporting certain analysis methods. In this proceeding the design of the package, developed features and the comparison with the original CPU fitter are presented.
Progress Toward A 2νββ Measurement For The Majorana Demonstrator
Authors: Gilliss T , Abgrall N , Alvis S I , Arnquist I J , Avignone F T , Barabash A S , Barton C J , Bertrand F E , Bode T , Bradley A W , Brudanin V , Busch M , Buuck M , Caldwell T S , Chan Y-D , Christofferson C D , Chu P-H , Cuesta C , Detwiler J A , Dunagan C , Efremenko Yu , Ejiri H , Elliott S R , 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 DEMONSTRATOR is a 76Ge-based neutrinoless double-beta decay (0νββ) experiment. Staged at the 4850 ft level of the Sanford Underground Research Facility, the DEMONSTRATOR operates an array of high-purity p-type point contact Ge detectors deployed within a graded passive shield and an active muon veto system. The present work concerns the two-neutrino double-beta decay mode (2νββ) of 76Ge. For Ge detectors, having superior energy resolution (0.1%), this mode poses negligible background to the 0νββ mode, even for a ton-scale experiment. However, the measurement of the 2νββ mode allows for careful systematics checks of active detector mass, enrichment fraction, and pulse shape discrimination cuts related to both the 0νββ and 2νββ decay modes. A precision measurement of the 2νββ shape also allows searches for spectral distortions, possibly indicative of new physics, including 0νββχ. Work is underway to construct a full experimental background model enabling a Bayesian fit to the measured energy spectrum and extraction of a precise 2νββ spectrum and half-life.
Electromagnetic interactions of massive neutrinos and neutrino oscillations
Authors: Giunti Carlo , Kouzakov Konstantin A , Li Yu-Feng , Lokhov Alexey V , Studenikin Alexander I , Zhou Shun 
Published: January 2020

Abstract
An interplay between electromagnetic properties of massive neutrinos and neutrino oscillation phenomena is discussed. The role of neutrino oscillations in the search of neutrino magnetic moments in experiments on low-energy elastic neutrino-electron scattering is emphasized. A general treatment of neutrino spin-flavor oscillations in a magnetic field is presented. An impact of neutrino electromagnetic interactions on Majorana neutrino fluxes from supernovae is pointed out.
Electromagnetic interactions of neutrinos in processes of low-energy elastic neutrino-electron scattering
Authors: Kouzakov Konstantin A , Studenikin Alexander I 
Published: January 2020

Abstract
Electron energy and angular distributions in the process of low-energy elastic neutrino-electron scattering are treated in the free-electron approximation. The effects of the millicharges, magnetic, electric, and anapole moments of massive neutrinos along with the flavor change of neutrinos travelling from the source to the detector are taken into account under the assumption of three-neutrino mixing. The footprints of neutrino electromagnetic interactions in the electron energy and angle distributions are discussed.
Data quality assurance for the Majorana Demonstrator
Authors: Myslik J , Abgrall N , Alvis S I , Arnquist I J , Avignone F T , Barabash A S , Barton C J , Bertrand F E , Bode T , Bradley A W , Brudanin V , Busch M , Buuck M , Caldwell T S , Chan Y-D , 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 , 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 DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a large-scale experiment in a phased and modular fashion. It consists of two modular arrays of natural and 76 Ge-enriched germanium detectors totalling 44.1 kg, located at the 4850’ level of the Sanford Underground Research Facility in Lead, South Dakota, USA. Any neutrinoless double-beta decay search requires a thorough understanding of the background and the signal energy spectra. The various techniques employed to ensure the integrity of the measured spectra are discussed. Data collection is monitored with a thorough set of checks, and subsequent careful analysis is performed to qualify the data for higher level physics analysis. Instrumental background events are tagged for removal, and problematic channels are removed from consideration as necessary.
Neutrino spin precession and oscillations in transversal matter currents
Authors: Popov A. , Pustoshny P. , Studenikin A. 
Published: January 2020

Abstract
In this paper we considered semiclassical neutrino spin precession in a transversal matter current and quantum case of the neutrino spin oscillations in the mass and flavor bases induced by a moving media. In the first part we have verified, that even without presence of an electromagnetic field, in presence of a matter, when the transverse matter term is not zero, the neutrino spin oscillations can be induced. In the second part there were some calculations, that in the end led us to the evolution equations which include an effective Hamiltonian of the weak interactions. From these equations one can see the influence of the transverse component of a matter velocity on a spin oscillations and of the longitudinal component of a matter velocity on the neutrino energy spectrum.
Underwater Photometry System of the SNO+ Experiment
Authors: Singh Kalpana , Gorel Pierre , Hallin Aksel , Krauss Carsten , Petriw Zachary 
Published: January 2020

Abstract
The SNO+ experiment is a large-scale liquid scintillator-based experiment, adapting the Sudbury Neutrino Observatory (SNO) detector located at SNOLAB, Canada. The main physics goal is to investigate the Majorana nature of neutrinos through the search for the neutrinoless double-beta decay of 130Te. The camera system of SNO+ is designed to photograph calibration sources and triangulate their locations with an accuracy of a couple of centimeters. This will lead to better calibrations and more accurate physics measurements in SNO+. The camera system, when operated in a special mode with underwater lights turned on, also allows monitoring of the physical state of the detector. The optical calibration source was deployed in the water filled SNO+ detector in the summer of 2017. Pictures of the deployed source were taken using the camera system while the underwater lights were turned on. The triangulation analysis of the pictures gave us an opportunity to test the position accuracy of the deployed source in SNO+ using the camera system.
Extensive air showers event reconstruction using spatial and temporary particle distribution at Horizon-T experiment
Authors: Beznosko D , Yelshibekov K , Beisembaev R U , Beisembaeva E A , Beremkulov T , Iakovlev A , Jakupov S , Sheverdin A , Tagay Z , Uakhitov T , Vildanova M I , Zhukov V V 
Published: January 2020

Abstract
A newly completed (Oct. 2016) detector system of Extensive Air Showers (EAS) called Horizon-T (HT) is a part of Tien Shan high-altitude Science Station of Lebedev Physical Institute of the Russian Academy of Sciences, which is located 32 km from Almaty at the altitude of 3340 meters above the sea level. Horizon-T is constructed to study Extensive Air Showers in the energy range above ∼1016 eV coming from a wide range of zenith angles (0° - 85°). The system currently has eight working and two under construction charged particle detection points separated by the distance more than a kilometer. The ability to record each detector response with accuracy of 2 ns gives HT ability to study the temporary structure of EAS disk and apply the results to the event reconstruction. The reconstruction is therefore based on chronotron (< 0.5 ns), spatial and temporary distribution of charged particles within the detected EAS event. In this paper, we will show the simulated time distribution of charged particles in the EAS disk vs. distance from the axis and the correspondence to the data. A flow of the reconstruction of standard EAS events and the event display is presented as well as recent HT results.
Polarization of cascade hyperons and antihyperons
Authors: Abramov V V 
Published: January 2020

Abstract
Polarizations of cascade hyperons (Ξ0 and Ξ−) and antihyperons are especially interesting because they are very sensitive to the mechanism of their production. Hyperon polarization for existing data is considered in framework of the model of chromomagnetic polarization of quarks (CPQ). Hyperon and antihyperon polarization predictions are presented for a wide range of c.m.s. energy

s

and Feynman variable xF
.
A new extraction of the Boer-Mulders function
Authors: Christova E , Kotlorz D , Leader E 
Published: January 2020

Abstract
We extract the valence part of the nucleón Boer-Mulder (BM) function from the new COMPASS data on the unpolarized cosϕh
and cos2ϕh
asymmetries in SIDIS on deuteron for producing the hadron h and its antiparticle

h
¯

at azimuthal angle ϕh
. Our results, obtained with only standard assumption of factorization of the xB
(zh
) and transverse momentum dependences, differ significantly from the presently published data on the BM function, obtained using a model assumption of proportionality to the better known Sivers function. This suggests that the published results on the BM function should be reconsidered.
Comparative study of proton and positive kaon interactions with carbon: hint of new physics like partial restoration of chiral symmetry in nuclei
Authors: Eliseev S. M. 
Published: January 2020

Abstract
Concerning the scattering of K+ - mesons on nuclei, the explicit discrepancy between experimental data and optical model calculations is a longstanding problem and none of the conventional medium effect corrections improves significantly the agreement with the data. In this paper the cross sections for the reactions K++12C at incident momenta of the kaon P
lab
< 800 MeV/c are calculated on the basis of Glauber’s high-energy approximation. The noneikonal corrections, Fermi motion effect and both Pauli and dynamic short-range correlations were incorporated in the Glauber approach for nuclear collisions. The influence of all these corrections on the calculation of the cross sections for the interactions of kaon with nucleus is discussed. The full calculations is compared to available data. The corrections seem to fail in reproducing the experimental data. Our results is compared to optical model calculations. We show that both our model and optical model fails to give a satisfactory description of K+-nuclei cross sections. Different attempts to remove this discrepancy with the in-medium effects taken into account are discussed.
Exclusive processes and GPDs
Authors: Goloskokov Sergey 
Published: January 2020

Abstract
We investigate the exclusive vector meson production (VMP) which is an essential reaction to analyse the General Parton Distributions (GPDs). The possibility to study VMP at NICA is discussed. The other important process is the exclusive Drell-Yan (D-Y) production in the proton-proton reaction, which is determined by two GPDs. These reactions can be studied at NICA and give an additional excess to GPDs.
Particle Polarization and Structure of Vortical Field in Relativistic Heavy-Ion Collisions
Authors: Ivanov Yu. B. , Toneev V. D. , Soldatov A. A. 
Published: January 2020

Abstract
We review studies of vortical motion and the resulting global polarization of Λ and

Λ
¯

hyperons in heavy-ion collisions within 3FD model. The 3FD simulations indicate that energy dependence of the observed global polarization of hyperons in the midrapidity region is a consequence of the decrease of the vorticity in the central region with the collision energy rise because of pushing out the vorticity field into the fragmentation regions. At high collision energies this pushing-out results in a peculiar vortical structure consisting of two vortex rings: one ring in the target fragmentation region and another one in the projectile fragmentation region with matter rotation being opposite in these two rings.