TY - JOUR
T1 - Atmospheric neutrinos as probes of neutrino-matter interactions
AU - Friedland, Alexander
AU - Lunardini, Cecilia
AU - Maltoni, Michele
N1 - Funding Information:
We are very grateful to Thomas Schwetz for sharing with us his K2K analysis. We thank the Aspen Center for Physics where part of this research was completed for hospitality. A. F. was supported by the Department of Energy, under Contract No. W-7405-ENG-36, C. L. by a grant-in-aid from the W. M. Keck Foundation and the NSF Grant No. PHY-0070928, and M. M. by the NSF Grant No. PHY-0354776.
PY - 2004/12
Y1 - 2004/12
N2 - 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 νμ - ντ 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.
AB - 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 νμ - ντ 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.
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U2 - 10.1103/PhysRevD.70.111301
DO - 10.1103/PhysRevD.70.111301
M3 - Article
AN - SCOPUS:10444287555
SN - 1550-7998
VL - 70
SP - 111301-1-111301-5
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 111301
ER -