Searching for BSM neutrino interactions in dark matter detectors

Self Cite

Right-handed neutrinos (νR) are often considered as a portal to new hidden physics. It is tempting to consider a gauge singlet scalar (ϕ) that exclusively couples to νR via a νRνRϕ term. Such a νR-philic scalar does not interact with charged fermions at tree level but loop-induced effective interactions are inevitable, which are systematically investigated in this work. The magnitude of the loop-induced couplings coincidentally meets the current sensitivity of fifth-force searches. In particular, the loop-induced coupling to muons could be tested in the recent LIGO observations of neutron star mergers as there might be a sizable Yukawa force in the binary system mediated by the νR-philic scalar.

Section: Phenomenologymentioning

confidence: 99%

The νR-philic scalar: its loop-induced interactions and Yukawa forces in LIGO observations

2020

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“…Very recently, it has been emphasized the need for taking into account also the incoherent channel of neutrino-nucleus scattering at momentum transfers (q) beyond the coherency frontier, e.g. qR A 1 [45] (R A is the nuclear radius), which are particularly relevant for neutrino floor studies at direct detection dark matter experiments [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Probing neutrino transition magnetic moments with coherent elastic neutrino-nucleus scattering

Miranda

Papoulias

Tórtola

et al. 2019

We explore the potential of current and next generation of coherent elastic neutrinonucleus scattering (CEνNS) experiments in probing neutrino electromagnetic interactions. On the basis of a thorough statistical analysis, we determine the sensitivities on each component of the Majorana neutrino transition magnetic moment (TMM), |Λ i |, that follow from low-energy neutrino-nucleus experiments. We derive the sensitivity to neutrino TMM from the first CEνNS measurement by the COHERENT experiment, at the Spallation Neutron Source. We also present results for the next phases of COHERENT using HPGe, LAr and NaI[Tl] detectors and for reactor neutrino experiments such as CONUS, CONNIE, MINER, TEXONO and RED100. The role of the CP violating phases in each case is also briefly discussed. We conclude that future CEνNS experiments with low-threshold capabilities can improve current TMM limits obtained from Borexino

“…This implies a lack of sensitivity to u,V τ τ and d,V τ τ parameters. To supplement our analysis with a dataset sensitive to u,V τ τ and d,V τ τ NSI, we extend the experiments considered so far to include future projections at a future liquid xenon (LXe) dark matter detector (DMD); being optimized for detecting nuclear interactions with the DM halo, a kiloton-scale detector would be sensitive enough explore NSI through the CEνNS and EνES cross-sections from naturally occurring neutrino fluxes [36][37][38][39]. This is the "neutrino floor" that DM direct detection experiments are soon set to encounter, and may be enhanced in the presence of NSI [40].…”

Section: Combining Oscillation Ceνns and Eνes Datamentioning

confidence: 99%

A global analysis strategy to resolve neutrino NSI degeneracies with scattering and oscillation data

Dutta

Lang

Liao

et al. 2020

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 projections 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.