Lorentz violation in simple QED processes

Authors :: P. C. Malta
Daniel Kroff
C. Marques
J. T. Guaitolini Junior
G. P. de Brito
Centro Brasileiro de Pesquisas Físicas (CBPF)
Instituto Federal Do Espírito Santo (IFES)
Universidade Estadual Paulista (UNESP)
Universität Heidelberg
CBPF
IFES
Universidade Estadual Paulista (Unesp)
Heidelberg Univ
Source :: Scopus, Repositório Institucional da UNESP, Universidade Estadual Paulista (UNESP), instacron:UNESP, Web of Science
Publication Year :: 2016
Publisher :: American Physical Society (APS), 2016.
Abstract: We determine the effect of a CPT-even and Lorentz violating non-minimal coupling on the differential cross sections for some of the most important tree-level processes in QED, namely, Compton and Bhabha scatterings, as well as electron-positron annihilation. Experimental limits constraining the allowed deviation of the differential cross sections relative to pure QED allow us to place upper bounds on the Lorentz violating parameters. A constraint based on the decay rate of para-positronium is also obtained.<br />Final version, includind suggestions of the referee. Published in PRD