Coherent elastic neutrino nucleus scattering as a probe of a Z ′ through kinetic and mass mixing effects

Neutrino interactions beyond the Standard Model (BSM) are theoretically well motivated and have an important impact on the future precision measurement of neutrino oscillation. In this work, we study the sensitivity of a multi-ton-scale liquid Xenon dark matter detector equipped with an intense radioactive neutrino source to various BSM neutrino-electron interactions. We consider the conventional Non-Standard Interactions (NSIs), other more generalized four-fermion interactions including scalar and tensor forms, and light-boson mediated interactions. The work shows that with realistic experimental setups, one can achieve unprecedented sensitivity to these BSM neutrinoelectron interactions.

Section: Light Zmentioning

confidence: 99%

Searching for BSM neutrino interactions in dark matter detectors

Link

2019

“…The recent observation of neutral-current coherent elastic neutrino-nucleus scattering (CEνNS) by the COHERENT experiment [16,17] has given access to a wide range of new physics opportunities. This has prompted numerous proposals to search for physics beyond the SM [18][19][20][21] with a special focus on non-standard neutrino interactions with matter [22][23][24][25][26][27][28], sterile neutrinos [29][30][31], novel mediators [32][33][34][35] and dark matter [36,37]. Moreover, CEνNS has been also suggested as a prominent tool towards exploring important nuclear structure parameters [38,39], as well as implications for physics within [40,41] and beyond the Standard Model [42][43][44].…”

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

“…While SHiP will cover a large region of parameter space it will not reach the area suggested by (g − 2) µ . This area will be probed by COHERENT [113] but most decisively by the proposed muon run of NA64µ [18,52]. The additional region of projected SHiP sensitivity for M A > 2m µ is a consequence of high statistics and the unsuppressed Br(A → µ + µ − ).…”

Section: U(1) Lµ−lτmentioning

confidence: 99%

“…The detector consisted of a CsI target that was exposed to neutrinos from decays of secondary pions, which were produced from a proton beam dumped into a mercury fixed target. The observed signal has been used in [113] to set limits on a secluded hidden photon as well as on a U(1) Lµ−Lτ gauge boson. Furthermore, a future accelerator setup with a COHERENT detector consisting of a NaI/Ar target and a total exposure of 10 ton·year has been used to derive projected sensitivities.…”

Section: Coherentmentioning

confidence: 99%

Hunting all the hidden photons

Bauer¹,

Foldenauer²,

Jaeckel³

2018

375

450

We explore constraints on gauge bosons of a weakly coupled U(1) B−L , U(1) Lµ−Le , U(1) Le−Lτ and U(1) Lµ−Lτ . To do so we apply the full constraining power of experimental bounds derived for a hidden photon of a secluded U(1) X and translate them to the considered gauge groups. In contrast to the secluded hidden photon that acquires universal couplings to charged Standard Model particles through kinetic mixing with the photon, for these gauge groups the couplings to the different Standard Model particles can vary widely. We take finite, computable loop-induced kinetic mixing effects into account, which provide additional sensitivity in a range of experiments. In addition, we collect and extend limits from neutrino experiments as well as astrophysical and cosmological observations and include new constraints from white dwarf cooling. We discuss the reach of future experiments in searching for these gauge bosons.