Wed·Mar 16, 2022Wednesday·March 16, 2022

1. 01*

   Measuring the electron neutrino mass using the electron capture decay of 163Ho

   Joel Ullom🇺🇸 · Daniel Schmidt🇺🇸 · Simon Bandler🇺🇸 · Thomas Stevenson🇺🇸 · Mark Croce🇺🇸 · Katrina Koehler🇺🇸 · Matteo De Gerone🇮🇹 · Loredana Gastaldo🇩🇪 · Christian Enss🇩🇪 · Geonbo Kim🇺🇸 · Angelo Nucciotti🇮🇹 · Stefano Ragazzi🇮🇹 and 5 other authors

   While the mass differences between neutrino mass states are known, their absolute masses and mass hierarchy have not yet been determined. Determining the mass of neutrinos provides access to physics beyond the Standard Model and the resulting value has implications for the growth of large-scale structure in the universe over cosmic history. Because of the importance of the topic, a number of efforts are already underway to determine the mass of neutrinos including direct kinematic measurements and indirect measurements of astrophysical phenomena that constrain the sum of the mass eigenstates through models of cosmic evolution. Here, we advocate for a collaborative international effort to perform a kinematic determination of the effective electron neutrino mass using calorimetric measurements of the decay of 163Ho. This effort is justified by the success of current experiments using the technique, its high benefit-to-cost ratio, the value of approaches with different systematic errors, and the value of measuring the electron neutrino mass rather than the electron anti-neutrino mass.

   nucl-exhep-phphysics.ins-det5 citations
2. 02*

   Search for the QCD Critical Point in High Energy Nuclear Collisions

   A. Pandav🇮🇳 · D. Mallick🇮🇳 · B. Mohanty🇮🇳

   QCD critical point is a landmark region in the QCD phase diagram outlined by temperature as a function of baryon chemical potential. To the right of this second-order phase transition point, one expects first order quark-hadron phase transition boundary, towards the left a crossover region, top of it lies the quark gluon plasma phase and below it the hadronic phase. Hence locating the QCD critical point through relativistic heavy-ion collision experiments is an active area of research. Cumulants of conserved quantities in strong interaction, such as net-baryon, net-charge, and net-strangeness, are suggested to be sensitive to the physics of QCD critical point and are therefore useful observables in the study of the phase transition between quark-gluon plasma and hadronic matter. We review the experimental status of the search for the QCD critical point via the measurements of cumulants of net-particle distributions in heavy ion collisions. We discuss various experimental challenges and associated corrections in such fluctuation measurements. We also comment on the physics implications of the measurements by comparing them with theoretical calculations. This is followed by a discussion on future experiments and measurements related to high baryonic density QCD matter.

   nucl-exhep-exnucl-thPPNP(2022)·73 citations
3. 03*

   KATRIN: Status and Prospects for the Neutrino Mass and Beyond

   M. Aker🇩🇪 · M. Balzer🇩🇪 · D. Batzler🇩🇪 · A. Beglarian🇩🇪 · J. Behrens🇩🇪 · A. Berlev🇷🇺 · U. Besserer🇩🇪 · M. Biassoni🇮🇹 · B. Bieringer🇩🇪 · F. Block🇩🇪 · S. Bobien🇩🇪 · L. Bombelli🇮🇹 and 150 other authors

   The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to measure a high-precision integral spectrum of the endpoint region of T2 beta decay, with the primary goal of probing the absolute mass scale of the neutrino. After a first tritium commissioning campaign in 2018, the experiment has been regularly running since 2019, and in its first two measurement campaigns has already achieved a sub-eV sensitivity. After 1000 days of data-taking, KATRIN's design sensitivity is 0.2 eV at the 90% confidence level. In this white paper we describe the current status of KATRIN; explore prospects for measuring the neutrino mass and other physics observables, including sterile neutrinos and other beyond-Standard-Model hypotheses; and discuss research-and-development projects that may further improve the KATRIN sensitivity.

   nucl-exastro-ph.COhep-exphysics.ins-detJ.Phys.G(2022)·93 citations
4. 04*

   Efficiency Studies of Fast Neutron Tracking using MCNP

   Pinghan Chu🇺🇸 · Michael R. James · Zhehui Wang🇺🇸

   Fast neutron identification and spectroscopy is of great interest to nuclear physics experiments. Using the neutron elastic scattering, the fast neutron momentum can be measured. (Wang and Morris, 2013) introduced the theoretical concept that the initial fast neutron momentum can be derived from up to three consecutive elastic collisions between the neutron and the target, including the information of two consecutive recoil ion tracks and the vertex position of the third collision or two consecutive elastic collisions with the timing information. Here we also include the additional possibility of measuring the deposited energies from the recoil ions. In this paper, we simulate the neutron elastic scattering using the Monte Carlo N-Particle Transport Code (MCNP) and study the corresponding neutron detection and tracking efficiency. The corresponding efficiency and the scattering distances are simulated with different target materials, especially natural silicon (92.23$\%$ ${}^{28}$Si, 4.67$\%$ ${}^{29}$Si, and 3.1$\%$ ${}^{30}$Si) and helium-4 (${}^4$He). The timing of collision and the recoil ion energy are also investigated, which are important characters for the detector design. We also calculate the ion travelling range for different energies using the software, "The Stopping and Range of Ions in Matter (SRIM)", showing that the ion track can be most conveniently observed in ${}^4$He unless sub-micron spatial resolution can be obtained in silicon.

   ↳ physics.ins-detnucl-exJ. Nucl. Eng. 2022, 3(2), 117-127·0 citations
5. 05*

   Future Advances in Photon-Based Neutrino Detectors: A SNOWMASS White Paper

   Joshua R. Klein🇺🇸 · Tomi Akindele🇺🇸 · Adam Bernstein🇺🇸 · Steven Biller🇬🇧 · Nathaniel Bowden🇺🇸 · Jason Brodsky🇺🇸 · D.F. Cowen🇺🇸 · Michael Ford🇺🇸 · Julieta Gruszko🇺🇸 · Logan Lebenowski🇺🇸 · Aobo Li🇺🇸 · Viacheslav A. Li🇺🇸 and 8 other authors

   We discuss here new, enabling technologies for future photon-based neutrino detectors. These technologies touch nearly every aspect of such detectors: new scintillating materials, new methods of loading isotopes, new photon sensors and collectors, new approaches to simulation and analysis, and new front-end electronics and DAQ ideas. Of particular interest are technologies that enable broad physics programs in hybrid Cherenkov/scintillation detectors, such as slow fluors, water-based liquid scintillator, and spectral sorting of photons. Several new large-scale detector ideas are also discussed, including hybrid detectors like Theia, ArTEMIS, and generic slow-fluor detectors, as well as the very different SLIPs and LiquidO approaches to instrumenting photon-based detectors. A program of demonstrators for future detectors, including ANNIE, Eos, and NuDOT are also discussed.

   ↳ physics.ins-dethep-exnucl-ex18 citations
6. 06*

   Tile Multiple-Readout Compensated Calorimetry

   David Winn🇺🇸 · Yasar Onel🇺🇸

   We propose extending parallel fiber dual readout calorimetry to tiles, more applicable to many future experimental requirements, with superior energy resolution. Monte Carlo (MC) studies indicate that a tile dual calorimeter including an integral Cerenkov-compensated e-m front end and further longitudinal segmentation, not possible with parallel fibers, has equivalent or better resolution. Besides comparison and tuning with dual tile calorimeter data, a MC can be extended to study other dual and then multiple tile sensors including tiles with higher contrast to em-hadron shower fluctuations with low refractive indices (much lower than quartz or plastic), transition radiation, secondary emission, hydrogenous/non-hydrogenous ionization-sensing, and neutron and ion-fragment sensing tiles for improving dual readout not available with fibers, and beyond to triple or more readout. For example, secondary emission tiles (like dynodes) are very sensitive to ion fragments and low energy neutrons. We suggest MC studies for adding Cerenkov and other tiles to Particle Flow/High Granularity tile calorimeters such CALICE and planned in CMS & ATLAS Phase III upgrades, groups studying future machine(ee,pp,ep) detectors, b-physics, tagged neutrino experiments, and space-based calorimeters.

   ↳ physics.ins-detastro-ph.HEhep-exnucl-ex0 citations
7. 07*

   Monolithic Active Pixel Sensors on CMOS technologies

   Nicole Apadula🇺🇸 · Whitney Armstrong🇺🇸 · James Brau🇺🇸 · Martin Breidenbach🇺🇸 · R. Caputo🇺🇸 · Gabriella Carinii🇺🇸 · Alberto Collu🇺🇸 · Marcel Demarteau🇺🇸 · Grzegorz Deptuch🇺🇸 · Angelo Dragone🇺🇸 · Gabriele Giacomini🇺🇸 · Carl Grace🇺🇸 and 28 other authors

   Collider detectors have taken advantage of the resolution and accuracy of silicon detectors for at least four decades. Future colliders will need large areas of silicon sensors for low mass trackers and sampling calorimetry. Monolithic Active Pixel Sensors (MAPS), in which Si diodes and readout circuitry are combined in the same pixels, and can be fabricated in some of standard CMOS processes, are a promising technology for high-granularity and light detectors. In this paper we review 1) the requirements on MAPS for trackers and electromagnetic calorimeters (ECal) at future colliders experiments, 2) the ongoing efforts towards dedicated MAPS for the Electron-Ion Collider (EIC) at BNL, for which the EIC Silicon Consortium was already instantiated, and 3) space-born applications for MeV $\gamma$-ray experiments with MAPS based trackers (AstroPix).

   ↳ physics.ins-dethep-exnucl-ex12 citations
8. 08*

   Electric dipole moments and the search for new physics

   Ricardo Alarcon🇺🇸 · Jim Alexander🇺🇸 · Vassilis Anastassopoulos🇬🇷 · Takatoshi Aoki · Rick Baartman🇨🇦 · Stefan Baeßler🇺🇸 · Larry Bartoszek🇺🇸 · Douglas H. Beck🇺🇸 · Franco Bedeschi🇮🇹 · Robert Berger🇩🇪 · Martin Berz🇺🇸 · Hendrick L. Bethlem and 131 other authors

   Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well beyond those reached directly at high energy colliders. Discrimination between different physics models, however, requires complementary searches in atomic-molecular-and-optical, nuclear and particle physics. In this report, we discuss the current status and prospects in the near future for a compelling suite of such experiments, along with developments needed in the encompassing theoretical framework.

   ↳ hep-phhep-exhep-latnucl-ex+1141 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.