Lorentz violating extension of the standard model and the beta-decay endpoint

• Type: Article in International Scientific Journal
• Date: 2008

Authors

bernardini, ae (Author) Other; bertolami, o (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 77

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 16 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-0PN

DOI: 10.1103/physrevd.77.085032

Abstract (EN): 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 beta decay. Assuming lepton number conservation, our formalism provides a natural explanation for the tritium beta-decay end point via an effective neutrino mass term without the need of a sterile right-handed state.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7