Atmospheric neutrinos as probes of neutrino-matter interactions
- Theoretical Division, T-8, MS B285, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- School of Natural Sciences, Institute for Advanced Study, Einstein Drive, Princeton, New Jersey 08540 (United States)
- C.N. Yang Institute for Theoretical Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3840 (United States)
Neutrino oscillation experiments provide a unique tool for probing neutrino-matter interactions, especially those involving the tau neutrino. We describe the sensitivity of the present atmospheric neutrino data to these interactions in the framework of a three-flavor analysis. Compared to the two-flavor {nu}{sub {mu}}-{nu}{sub {tau}} analyses, we find qualitatively new features, in particular, that large nonstandard interactions, comparable in strength to those in the Standard Model, can be consistent with the data. The existence of such interactions could imply a smaller value of the neutrino mixing angle and larger value of the mass-squared splitting than in the case of standard interactions only. This and other effects of nonstandard interactions may be tested in the next several years by MINOS, KamLAND, and solar neutrino experiments.
- OSTI ID:
- 20698083
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 70, Issue 11; Other Information: DOI: 10.1103/PhysRevD.70.111301; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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