Search for a Lorentz invariance violation contribution in atmospheric neutrino oscillations using MACRO data

Abstract

Neutrino-induced upward-going muons in MACRO have been analysed in terms of relativity principles violating effects, keeping standard mass-induced atmospheric neutrino oscillations as the dominant source of nu_mu -> nu_tau transitions. The data disfavor these exotic possibilities even at a sub-dominant level, and stringent 90% C.L. limits are placed on the Lorentz invariance violation parameter |Delta v| < 6 * 10^(-24) at sin2theta_v = 0 and |Delta v| < 2.5--5 * 10^(-26) at sin2theta_v = +/-1. These limits can also be re-interpreted as upper bounds on the parameters describing violation of the Equivalence Principle.

8 pages, 2 figures, submitted to Physics Letters B

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• Lorentz Invariance Violation and Symmetry in Randers--Finsler Spaces
• Cosmic Rays and the Search for a Lorentz Invariance Violation
• Probing Nonstandard Neutrino Physics by Two Identical Detectors with Different Baselines
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• Constraining the Violation of Equivalence Principle with IceCube Atmospheric Neutrino Data
• Neutrino Constraints on Spontaneous Lorentz Violation
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• From AMANDA to IceCube
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• Violation of Equivalence Principle in Neutrino Sector: Probing the Extended Parameter Space
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• Search for exotic contributions to atmospheric neutrino oscillations