| Autor: |
L.T. Hue, H.N. Long, V.H. Binh, H.L.T. Mai, T. Phong Nguyen |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Nuclear Physics B, Vol 992, Iss , Pp 116244- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
0550-3213 |
| DOI: |
10.1016/j.nuclphysb.2023.116244 |
| Popis: |
In this paper, we will present analytic formulas to express one-loop contributions to lepton flavor violating decays eb→eaγ, which are also relevant to the anomalous dipole magnetic moments of charged leptons ea. These formulas were computed in the unitary gauge, using the well-known Passarino-Veltman notations. We also show that our results are consistent with those calculated previously in the 't Hooft-Veltman gauge, or in the limit of zero lepton masses. At the one-loop level, we show that the appearance of fermion-scalar-vector type diagrams in the unitary gauge will violate the Ward Identity relating to an external photon. As a result, the validation of the Ward Identity guarantees that the photon always couples with two identical particles in an arbitrary triple coupling vertex containing a photon. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
Full Text from ScienceDirect