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Atmospheric neutrinos as a probe of CPT violation

2003/12/31 by Anindya Datta, Raj Gandhi, Poonam Mehta +2 · 2 citations
Physics and Astronomy · #Neutrino Physics Research #Noncommutative and Quantum Gravity Theories #Particle physics theoretical and experimental studies #hep-ex #hep-ph #hep-th

paper · pdf · doi:10.1016/j.physletb.2004.07.035

published as Phys.Lett. B597 (2004) 356-361 · 8 pages, 2 eps figures, modified version to appear in Phys. Lett. B

arxiv created 2004/07/26 · openalex publication_date 2004/07/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We show that atmospheric neutrinos can provide a sensitive and robust probe of CPT violation (CPTV). We perform realistic event-rate calculations and study the variations of the ratio of total muon to antimuon survival rates with L/E and L (L≡ baseline length, E ≡ neutrino energy) in a detector capable of identifying the muon charge. We demonstrate that measurements of these ratios when coupled with the significant L and E range which characterizes the atmospheric neutrino spectrum provides a method of both detecting the presence of such violations and putting bounds on them which compare very favorably with those possible from a future neutrino factory.

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