Abstract
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 neutrino-electron interactions.
Highlights
Event ratesLet us consider a general 51Cr-liquid xenon (LXe) experiment and evaluate the event numbers of ν-e scattering
JHEP08(2019)004 measurements come from LSND [47] and TEXONO [30] respectively, with only 20% precision
We study the sensitivity of a multi-ton-scale liquid Xenon dark matter detector equipped with an intense radioactive neutrino source to various beyond the Standard Model (BSM) neutrino-electron interactions
Summary
Let us consider a general 51Cr-LXe experiment and evaluate the event numbers of ν-e scattering. In the 51Cr-LXe experiment, the number of ν-e scattering events appearing in the infinitesimal volume dV around position r ≡ (x, y, z) in the detector, during the time interval t to t + dt, with the recoil energy from T to T + dT can be evaluated as dN = dV ne dt dT dσ φ (r, t, Eν) dT (T, Eν) dEν ,. Since the source decays exponentially, it is useful to define a time-averaged activity, RCr51. An average distance between the detector and the source, ravg, can be defined as:. With these averaged values, it is equivalent use the following replacement in our analyses:. In configuration C, the signalto-noise ratio is further increased by the use of a more intense source
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