765 research outputs found
Searching for BSM neutrino interactions in dark matter detectors
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
radiative 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.Comment: fig. 7 added, matches the published versio
Combining dark matter detectors and electron-capture sources to hunt for new physics in the neutrino sector
In this letter we point out the possibility to study new physics in the
neutrino sector using dark matter detectors based on liquid xenon. These are
characterized by very good spatial resolution and extremely low thresholds for
electron recoil energies. When combined with a radioactive source, both
features in combination allow for a very competitive sensitivity to neutrino
magnetic moments and sterile neutrino oscillations. We find that, for realistic
values of detector size and source strength, the bound on the neutrino magnetic
moment can be improved by an order of magnitude with respect to the present
value. Regarding sterile neutrino searches, we find that most of the gallium
anomaly could be explored at the 95% confidence level just using shape
information.Comment: 5 pages, 2 figures. Minor modifications, references added. Version
accepted for publication in JHE
Measuring the Relative Strong Phase in and Decays
In a recently suggested method for measuring the weak phase in
decays, the relative strong phase in and decays (equivalently, in and \od \to K^{*+} K^-) plays a role. It is shown how a study of
the Dalitz plot in can yield information on this phase,
and the size of the data sample which would give a useful measurement is
estimated.Comment: 13 pages, latex, 5 figures, submitted to Phys. Rev. D. Appendix and
some text on additional resonant contributions adde
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