تقرير
One-loop contributions to decays $e_b\to e_a \gamma$ and $(g-2)_{e_a}$ anomalies, and Ward identity
| العنوان: | One-loop contributions to decays $e_b\to e_a \gamma$ and $(g-2)_{e_a}$ anomalies, and Ward identity |
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| المؤلفون: | Hue, L. T., Long, H. N., Binh, V. H., Mai, H. L. T., Nguyen, T. Phong |
| المصدر: | Nucl.Phys.B 992 (2023) 116244 |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | In this paper, we will present analytic formulas to express one-loop contributions to lepton flavor violating decays $e_b\to e_a \gamma$, which are also relevant to the anomalous dipole magnetic moments of charged leptons $e_a$. 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. Comment: The version accepted to Nuclear Physics B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.nuclphysb.2023.116244 |
| URL الوصول: | http://arxiv.org/abs/2301.05407 |
| رقم الأكسشن: | edsarx.2301.05407 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.nuclphysb.2023.116244 |
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