Effects of a CPT-even and Lorentz-violating nonminimal coupling on electron-positron scattering
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
21/08/2013
21/08/2013
2012
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| Resumo |
We propose a new CPT-even and Lorentz-violating nonminimal coupling between fermions and Abelian gauge fields involving the CPT-even tensor (K-F)(mu nu alpha beta) of the standard model extension. We thus investigate its effects on the cross section of the electron-positron scattering by analyzing the process e(+) + e(-) -> mu(+) + mu(-). Such a study was performed for the parity-odd and parity-even nonbirefringent components of the Lorentz-violating (K-F)(mu nu alpha beta) tensor. Finally, by using experimental data available in the literature, we have imposed upper bounds as tight as 10(-12) (eV)(-1) on the magnitude of the CPT-even and Lorentz-violating parameters while nonminimally coupled. DOI: 10.1103/PhysRevD.86.125033 CNPq CNPq CAPES CAPES FAPEMA FAPEMA |
| Identificador |
PHYSICAL REVIEW D, COLLEGE PK, v. 86, n. 12, pp. 125033(1-6), DEC 20, 2012 1550-7998 http://www.producao.usp.br/handle/BDPI/32669 10.1103/PhysRevD.86.125033 |
| Idioma(s) |
eng |
| Publicador |
AMER PHYSICAL SOC COLLEGE PK |
| Relação |
PHYSICAL REVIEW D |
| Direitos |
openAccess Copyright AMER PHYSICAL SOC |
| Palavras-Chave | #STANDARD-MODEL EXTENSION #SIMONS-LIKE TERM #SYMMETRY-BREAKING #QUANTUM ELECTRODYNAMICS #TESTS #INVARIANCE #CAUSALITY #HYDROGEN #ASTRONOMY & ASTROPHYSICS #PHYSICS, PARTICLES & FIELDS |
| Tipo |
article original article publishedVersion |
