Lorentz violation in simple QED processes
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2016-09-15
Autores
Brito, G. P. de
Guaitolini Junior, J. T.
Kroff, D. [UNESP]
Malta, P. C.
Marques, C.
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Amer Physical Soc
Resumo
We determine the effect of a CPT-even and Lorentz violating nonminimal 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 parapositronium is also obtained.
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Physical Review D. College Pk: Amer Physical Soc, v. 94, n. 5, 10 p., 2016.