Thu·Mar 17, 2022Thursday·March 17, 2022

1. 01*

   Toward CUPID-1T

   A. Armatol🇫🇷 · C. Augier🇫🇷 · F. T. Avignone III🇺🇸 · O. Azzolini🇮🇹 · M. Balata🇮🇹 · K. Ballen🇮🇹 · A. S. Barabash🇷🇺 · G. Bari🇮🇹 · A. Barresi🇮🇹 · D. Baudin🇫🇷 · F. Bellini🇮🇹 · G. Benato🇮🇹 and 163 other authors

   Current experiments to search for broken lepton-number symmetry through the observation of neutrinoless double-beta decay ($0\nu \beta \beta$) provide the most stringent limits on the Majorana nature of neutrinos and the effective Majorana neutrino mass ($m_{\beta \beta }$). The next-generation experiments will focus on the sensitivity to the $0\nu \beta \beta$ half-life of $\mathcal{O}(10^{27}$--$10^{28}$~years$)$ and $m_{\beta \beta }\lesssim 15$~meV, which would provide complete coverage of the so-called Inverted Ordering region of the neutrino mass parameter space. By taking advantage of recent technological breakthroughs, new, future calorimetric experiments at the 1-ton scale can increase the sensitivity by at least another order of magnitude, exploring the large fraction of the parameter space that corresponds to the Normal neutrino mass ordering. In case of a discovery, such experiments could provide important insights toward a new understanding of the mechanism of $0\nu \beta \beta$. We present here a series of projects underway that will provide advancements in background reduction, cryogenic readout, and physics searches beyond $0\nu \beta \beta$, all moving toward the next-to-next generation CUPID-1T detector.

   nucl-ex45 citations
2. 02*

   Measurement of differential cross sections for ${\Sigma }^{+}p$ elastic scattering in the momentum range 0.44-0.80 GeV/c

   J-PARC E40 Collaboration: T. Nanamura🇯🇵 · K. Miwa🇯🇵 · J. K. Ahn🇰🇷 · Y. Akazawa🇯🇵 · T. Aramaki🇯🇵 · S. Ashikaga🇯🇵 · S. Callier🇫🇷 · N. Chiga🇯🇵 · S. W. Choi🇰🇷 · H. Ekawa🇯🇵 · P. Evtoukhovitch🇷🇺 · N. Fujioka🇯🇵 and 59 other authors

   We performed a novel ${\Sigma }^{+}p$ scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 ${\Sigma }^{+}p$ elastic scattering events were identified from $4.9\times 10^7$ tagged ${\Sigma }^{+}$ particles in the ${\Sigma }^{+}$ momentum range 0.44 -- 0.80 GeV/$c$. The differential cross sections of the ${\Sigma }^{+}p$ elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the ${}^3{S}_1$ and ${}^1{P}_1$ channels for the first time. The phase shift of the ${}^3{S}_1$ channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as $20^{\circ }<|{\delta }_{{}^3{S}_1}|<35^{\circ }$. If the sign of ${\delta }_{{}^3{S}_1}$ is assumed to be negative, the interaction in this channel is moderately repulsive, as the Nijmegen extended-sort-core models predicted.

   nucl-exPTEP(2022)·38 citations
3. 03*

   Search for Neutrinoless ${\beta }^{+}EC$ Decay of ${}^{120}$Te with CUORE

   (CUORE Collaboration) D. Q. Adams🇺🇸 · C. Alduino🇺🇸 · K. Alfonso🇺🇸 · F. T. Avignone III🇺🇸 · O. Azzolini🇮🇹 · G. Bari🇮🇹 · F. Bellini🇮🇹 · G. Benato🇮🇹 · M. Beretta🇺🇸 · M. Biassoni🇮🇹 · A. Branca🇮🇹 · C. Brofferio🇮🇹 and 109 other authors

   CUORE is a large scale cryogenic experiment searching for neutrinoless double beta decay ($0\nu \beta \beta$) in ${}^{130}$Te. The CUORE detector is made of natural tellurium, providing the possibility of rare event searches on isotopes other than ${}^{130}$Te. In this work we describe a search for neutrinoless positron emitting electron capture ($0\nu {\beta }^{+}EC$) decay in ${}^{120}$Te with a total TeO${}_2$ exposure of 355.7 kg $\cdot$ yr, corresponding to 0.2405 kg $\cdot$ yr of ${}^{120}$Te. Albeit $0\nu \beta \beta$ with two final state electrons represents the most promising channel, the emission of a positron and two 511-keV $\gamma$s make $0\nu {\beta }^{+}EC$ decay signature extremely clear. To fully exploit the potential offered by the detector modularity we include events with different topology and perform a simultaneous fit of five selected signal signatures. Using blinded data we extract a median exclusion sensitivity of $3.4\cdot 10^{22}$ yr at 90% Credibility Interval (C.I.). After unblinding we find no evidence of $0\nu {\beta }^{+}EC$ signal and set a 90% C.I. Bayesian lower limit of $2.9\cdot 10^{22}$ yr on ${}^{120}$Te half-life. This result improves by an order of magnitude the existing limit from the combined analysis of CUORE-0 and Cuoricino.

   nucl-exPRC(2022)·12 citations
4. 04*

   The Sanford Underground Research Facility

   Jaret Heise

   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 those studying dark matter, neutrino properties, and nuclear astrophysics topics. SURF is also home to the Long-Baseline Neutrino Facility (LBNF) that will host the international Deep Underground Neutrino Experiment (DUNE). SURF offers an ultra-low background environment, low-background assay capabilities, and electroformed copper is produced at the facility. SURF is proposing additional underground space on the 4850L and 7400L (2300 m, 6500 m.w.e.), and initial engineering designs have been completed. SURF is a dedicated research facility with significant expansion capability, and applications from new experiments are welcome.

   ↳ hep-exastro-ph.IMnucl-ex12 citations
5. 05*

   Laser Manipulation of H- Beams: a Snowmass 2022 White Paper

   Abdurahim Rakhman🇺🇸

   Future high-power (10 - 20 MW) hadron accelerators offer many unique opportunities for fundamental science and nuclear applications. With the completion of Proton Power Upgrade (PPU) at 2.8 MW [1] and European Spallation Source (ESS) at 5 MW [2], the attention will be focused on the next high-power machine in hadron accelerator community. Charge exchange injection into a synchrotron using diamond stripper foils offers great advantage over direct proton acceleration. However, there are clear limitations associated with foil sublimation above critical beam power density and beam loss due to scattering (~10 rem/hour at 10 MW for SNS).

   ↳ physics.acc-phnucl-ex1 citation
6. 06*

   A Strategy for Low-Mass Dark Matter Searches with Cryogenic Detectors in the SuperCDMS SNOLAB Facility

   SuperCDMS Collaboration: M.F. Albakry🇨🇦 · I. Alkhatib🇨🇦 · D. W. P. Amaral🇬🇧 · T. Aralis🇺🇸 · T. Aramaki🇺🇸 · I. J. Arnquist🇺🇸 · I. Ataee Langroudy🇺🇸 · E. Azadbakht🇺🇸 · S. Banik🇮🇳 · C. Bathurst🇺🇸 · D. A. Bauer🇺🇸 · R. Bhattacharyya🇺🇸 and 115 other authors

   The SuperCDMS Collaboration is currently building SuperCDMS SNOLAB, a dark matter search focused on nucleon-coupled dark matter in the 1-5 GeV/c${}^2$ mass range. Looking to the future, the Collaboration has developed a set of experience-based upgrade scenarios, as well as novel directions, to extend the search for dark matter using the SuperCDMS technology in the SNOLAB facility. The experienced-based scenarios are forecasted to probe many square decades of unexplored dark matter parameter space below 5 GeV/c${}^2$, covering over 6 decades in mass: 1-100 eV/c${}^2$ for dark photons and axion-like particles, 1-100 MeV/c${}^2$ for dark-photon-coupled light dark matter, and 0.05-5 GeV/c${}^2$ for nucleon-coupled dark matter. They will reach the neutrino fog in the 0.5-5 GeV/c${}^2$ mass range and test a variety of benchmark models and sharp targets. The novel directions involve greater departures from current SuperCDMS technology but promise even greater reach in the long run, and their development must begin now for them to be available in a timely fashion. The experienced-based upgrade scenarios rely mainly on dramatic improvements in detector performance based on demonstrated scaling laws and reasonable extrapolations of current performance. Importantly, these improvements in detector performance obviate significant reductions in background levels beyond current expectations for the SuperCDMS SNOLAB experiment. Given that the dominant limiting backgrounds for SuperCDMS SNOLAB are cosmogenically created radioisotopes in the detectors, likely amenable only to isotopic purification and an underground detector life-cycle from before crystal growth to detector testing, the potential cost and time savings are enormous and the necessary improvements much easier to prototype.

   ↳ physics.ins-detastro-ph.IMhep-exnucl-ex84 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.