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Type: Artigo de periódico
Title: Lorentz Violating Extension Of The Standard Model And The β-decay Endpoint
Author: Bernardini A.E.
Bertolami O.
Abstract: The standard model extension with additional Lorentz violating terms allows for redefining the equation of motion of a propagating left-handed fermionic particle. The obtained Dirac-type equation can be embedded in a generalized Lorentz-invariance-preserving algebra through the definition of Lorentz algebralike generators with a lightlike preferred axis. The resulting modification to the fermionic equation of motion introduces some novel ingredients to the phenomenological analysis of the cross section of the tritium β decay. Assuming lepton number conservation, our formalism provides a natural explanation for the tritium β-decay end point via an effective neutrino mass term without the need of a sterile right-handed state. © 2008 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.77.085032
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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