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1. Solar neutrino detection sensitivity in DARWIN via electron scattering

   https://doi.org/10.1140/epjc/s10052-020-08602-7  

   Aalbers, J. ; Agostini, F. ; Maouloud, S. E. ; Alfonsi, M. ; Althueser, L. ; Amaro, F. D. ; Angevaare, J. ; Antochi, V. C. ; Antunovic, B. ; Aprile, E. ; et al ( December 2020 , The European Physical Journal C)

   Abstract We detail the sensitivity of the proposed liquid xenon DARWIN observatory to solar neutrinos via elastic electron scattering. We find that DARWIN will have the potential to measure the fluxes of five solar neutrino components: pp , $$^7$$ 7 Be, $$^{13}$$ 13 N, $$^{15}$$ 15 O and pep . The precision of the $$^{13}$$ 13 N, $$^{15}$$ 15 O and pep components is hindered by the double-beta decay of $$^{136}$$ 136 Xe and, thus, would benefit from a depleted target. A high-statistics observation of pp neutrinos would allow us to infer the values of the electroweak mixing angle, $$\sinmore »^2\theta _w$$ sin 2 θ w , and the electron-type neutrino survival probability, $$P_{ee}$$ P ee , in the electron recoil energy region from a few keV up to 200 keV for the first time, with relative precision of 5% and 4%, respectively, with 10 live years of data and a 30 tonne fiducial volume. An observation of pp and $$^7$$ 7 Be neutrinos would constrain the neutrino-inferred solar luminosity down to 0.2%. A combination of all flux measurements would distinguish between the high- (GS98) and low-metallicity (AGS09) solar models with 2.1–2.5 $$\sigma $$ σ significance, independent of external measurements from other experiments or a measurement of $$^8$$ 8 B neutrinos through coherent elastic neutrino-nucleus scattering in DARWIN. Finally, we demonstrate that with a depleted target DARWIN may be sensitive to the neutrino capture process of $$^{131}$$ 131 Xe.« less
2. A global analysis strategy to resolve neutrino NSI degeneracies with scattering and oscillation data

   https://doi.org/10.1007/JHEP09(2020)106  

   Dutta, Bhaskar ; Lang, Rafael F. ; Liao, Shu ; Sinha, Samiran ; Strigari, Louis ; Thompson, Adrian ( September 2020 , Journal of High Energy Physics)

   A bstract Neutrino non-standard interactions (NSI) with the first generation of standard model fermions can span a parameter space of large dimension and exhibit degeneracies that cannot be broken by a single class of experiment. Oscillation experiments, together with neutrino scattering experiments, can merge their observations into a highly informational dataset to combat this problem. We consider combining neutrino-electron and neutrino-nucleus scattering data from the Borexino and COHERENT experiments, including a projection for the upcoming coherent neutrino scattering measurement at the CENNS-10 liquid argon detector. We extend the reach of these data sets over the NSI parameter space with projectionsmore »for neutrino scattering at a future multi-ton scale dark matter detector and future oscillation measurements from atmospheric neutrinos at the Deep Underground Neutrino Experiment (DUNE). In order to perform this global anal- ysis, we adopt a novel approach using the copula method, utilized to combine posterior information from different experiments with a large, generalized set of NSI parameters. We find that the contributions from DUNE and a dark matter detector to the Borexino and COHERENT fits can improve constraints on the electron and quark NSI parameters by up to a factor of 2 to 3, even when relatively many NSI parameters are left free to vary in the analysis.« less
3. First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon

   https://doi.org/https://doi.org/10.1103/PhysRevLett.126.012002  

   Akimov, D ; Albert, J.B. ; An, P ; C. Awe, P. S. Barbeau ; B. Becker ; V. Belov ; I. Bernardi ; M. A. Blackston ; L. Blokland ; A. Bolozdynya ; et al ( January 2021 , Physical review letters)

   We report the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) on argon using a liquid argon detector at the Oak Ridge National Laboratory Spallation Neutron Source. Two independent analyses prefer CEvNS over the background-only null hypothesis with greater than 3σ significance. The measured cross section, averaged over the incident neutrino flux, is (2.2±0.7)×10−39  cm2—consistent with the standard model prediction. The neutron-number dependence of this result, together with that from our previous measurement on CsI, confirms the existence of the CEvNS process and provides improved constraints on nonstandard neutrino interactions.
4. Exploring neutrino–nucleus interactions in the GeV regime using MINERvA

   https://doi.org/10.1140/epjs/s11734-021-00296-6  

   Lu, X.-G. ; Dar, Z. Ahmad ; Akbar, F. ; Andrade, D. A. ; Ascencio, M. V. ; Barr, G. D. ; Bashyal, A. ; Bellantoni, L. ; Bercellie, A. ; Betancourt, M. ; et al ( December 2021 , The European Physical Journal Special Topics)

   Abstract With the advance of particle accelerator and detector technologies, the neutrino physics landscape is rapidly expanding. As neutrino oscillation experiments enter the intensity and precision frontiers, neutrino–nucleus interaction measurements are providing crucial input. MINERvA is an experiment at Fermilab dedicated to the study of neutrino–nucleus interactions in the regime of incident neutrino energies from one to few GeV. The experiment recorded neutrino and antineutrino scattering data with the NuMI beamline from 2009 to 2019 using the Low-Energy and Medium-Energy beams that peak at 3GeV and 6GeV, respectively. This article reviews the broad spectrum of interesting nuclear and particle physicsmore »that MINERvA investigations have illuminated. The newfound, detailed knowledge of neutrino interactions with nuclear targets thereby obtained is proving essential to continued progress in the neutrino physics sector.« less
5. Prospects for beyond the Standard Model physics searches at the Deep Underground Neutrino Experiment: DUNE Collaboration

   https://doi.org/10.1140/epjc/s10052-021-09007-w  

   Abi, B. ; Acciarri, R. ; Acero, M. A. ; Adamov, G. ; Adams, D. ; Adinolfi, M. ; Ahmad, Z. ; Ahmed, J. ; Alion, T. ; Monsalve, S. Alonso ; et al ( April 2021 , The European Physical Journal C)

   Abstract The Deep Underground Neutrino Experiment (DUNE) will be a powerful tool for a variety of physics topics. The high-intensity proton beams provide a large neutrino flux, sampled by a near detector system consisting of a combination of capable precision detectors, and by the massive far detector system located deep underground. This configuration sets up DUNE as a machine for discovery, as it enables opportunities not only to perform precision neutrino measurements that may uncover deviations from the present three-flavor mixing paradigm, but also to discover new particles and unveil new interactions and symmetries beyond those predicted in the Standardmore »Model (SM). Of the many potential beyond the Standard Model (BSM) topics DUNE will probe, this paper presents a selection of studies quantifying DUNE’s sensitivities to sterile neutrino mixing, heavy neutral leptons, non-standard interactions, CPT symmetry violation, Lorentz invariance violation, neutrino trident production, dark matter from both beam induced and cosmogenic sources, baryon number violation, and other new physics topics that complement those at high-energy colliders and significantly extend the present reach.« less