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arXiv · hep-ex/0508041

Search for exotic contributions to atmospheric neutrino oscillations

G. Battistoni·Y. Becherini·S. Cecchini·M. Cozzi·H. Dekhissi·L. Esposito·G. Giacomelli·M. Giorgini·G. Mandrioli·S. Manzoor·A. Margiotta·L. Patrizii·V. Popa·M. Sioli·G. Sirri·M. Spurio·V. Togo
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Abstract

The energy spectrum of neutrino-induced upward-going muons in MACRO was analysed in terms of relativity principles violating effects, keeping standard mass-induced atmospheric neutrino oscillations as the dominant effect. The data disfavor these possibilities even at a sub-dominant level; stringent 90% C.L. limits are placed on the Lorentz invariance violation parameter $|Δv| < 6 \times 10^{-24}$ at $\sin 2θ_v$ = 0 and $|Δv| < 2.5 ÷5 \times 10^{-26}$ at $\sin 2θ_v$ = $\pm$1. The limits can be re-interpreted as bounds on the Equivalence Principle violation parameters.

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G. Battistoni, Y. Becherini, S. Cecchini, M. Cozzi, H. Dekhissi, L. Esposito, G. Giacomelli, M. Giorgini, G. Mandrioli, S. Manzoor, A. Margiotta, L. Patrizii, V. Popa, M. Sioli, G. Sirri, M. Spurio, V. Togo. 2005-08-19. Search for exotic contributions to atmospheric neutrino oscillations. https://doi.org/10.1134/s1063778806110068

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