100 research outputs found
On neutrino-atom scattering in searches for neutrino magnetic moments
In the experimental searches for neutrino magnetic moments using germanium
detectors one studies the ionization channel in the neutrino-atom scattering.
We find that the so-called stepping approximation to the neutrino-impact
ionization is exact in the semiclassical limit, and that the deviations from
this approximation are very small.Comment: 1 page, to appear in Nuclear Physics B Proceedings Supplement 2011
(Proceedings of the XXIV International Conference on Neutrino Physics and
Astrophysics, Athens, June 14-19, 2010
Electromagnetic neutrino-atom collisions: The role of electron binding
We present a new theoretical approach to neutrino-impact atomic excitation
and/or ionization due to neutrino magnetic moments. The differential cross
section of the process is given by a sum of the longitudinal and transverse
terms, which are induced by the corresponding components of the force that the
neutrino magnetic moment imposes on electrons with respect to momentum
transfer. In this context, the recent theoretical studies devoted to the
magnetic neutrino scattering on atoms are critically examined.Comment: 4 pages, published in proceedings of NOW201
Elastic neutrino-atom scattering as a probe of neutrino millicharge and magnetic moment
Neutrino scattering on atomic systems at low-energy transfer is a powerful
tool for searching the neutrino electromagnetic interactions. The regime of
coherent elastic neutrino-atom scattering, i.e., when the atom recoils as a
pointlike particle, can be effectively fulfilled in the case of tritium
antineutrinos. We present theoretical calculations for coherent elastic
neutrino-atom scattering processes on such targets as the H, H, He, and
He %, and C atoms. We show how the atomic effects and neutrino
electromagnetic properties, namely the neutrino millicharge and magnetic
moment, may manifest themselves in the atomic-recoil spectra. Our results can
be used in planning the experiments on coherent elastic neutrino-atom
scattering (in particular, with superfluid He-4).Comment: 4 pages, based on the presentation at the 41st International
Conference on High Energy Physics (ICHEP2022 6-13 July 2022, Bologna, Italy),
prepared for the ICHEP2022 proceeding
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