Status of the CPT Violating Interpretations of the LSND Signal

Details Status of the CPT Violating Interpretations of the LSND Signal Status of the CPT Violating Interpretations of the LSND Signal

2003-06-24

arxiv.org/abs/hep-ph/0306226v3

Phys.Rev. D68 (2003) 053007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Improved version, to appear in Phys. Rev. D, 16 pages, 5 figures

Scientific paper

10.1103/PhysRevD.68.053007

We study the status of the CPT violating neutrino mass spectrum which has been proposed to simultaneously accommodate the oscillation data from LSND, KamLAND, atmospheric and solar neutrino experiments, as well as the non-observation of anti-neutrino disappearance in short-baseline reactor experiments. We perform a three-generation analysis of the global data with the aim of elucidating the viability of this solution. We find no compatibility between the results of the oscillation analysis of LSND and all-but-LSND data sets below 3$\sigma$ CL. Furthermore, the global data without LSND show no evidence for CPT violation: the best fit point of the all-but-LSND analysis occurs very close to a CPT conserving scenario.

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