4 papers
Ambiguities in the generation of CFJ-terms in a QED with dimension-5 operators in one loop
H. G. Fargnoli, J. C. C. Felipe, G. Gazzola
In this paper, we investigate a Lorentz symmetry breaking extension of Quantum Electrodynamics (QED), incorporating 5-dimensional CPT-odd terms at the one-loop level. Employing an…
Consistency of an alternative CPT-odd and Lorentz-violating extension of QED
J. C. C. Felipe, H. G. Fargnoli, A. P. Baeta Scarpelli +1
We investigate an alternative CPT-odd Lorentz-breaking QED which includes the Carroll-Field-Jackiw (CFJ) term of the Standard Model Extension (SME), writing the gauge sector in the…
Tree-level equivalence between a Lorentz-violating extension of QED and its dual model in electron-electron scattering
Giuliano R. Toniolo, H. G. Fargnoli, L. C. T. Brito +1
S-matrix amplitudes for the electron-electron scattering are calculated in order to verify the quantum equivalence of dual models. We used an extended Quantum Electrodynamics with…
GM2Calc: Precise MSSM prediction for of the muon
Peter Athron, Markus Bach, Helvecio G. Fargnoli +7
We present GM2Calc, a public C++ program for the calculation of MSSM contributions to the anomalous magnetic moment of the muon, . The code computes precisely, b…