Complete O(α) solution of the μ-decay problem
| dc.creator | Körner, Jürgen G. | |
| dc.date | 2004-02-23 | |
| dc.date.accessioned | 2026-07-07T03:52:08Z | |
| dc.date.available | 2026-07-07T03:52:08Z | |
| dc.description | In this talk I report on the results of a complete O(α) calculation of leptonic μ-decay. The calculation is complete in the sense that all polarization and mass effects have been included in the radiative corrections. I mostly concentrate on the longitudinal polarization of the electron which considerably differs from the naive value P_e^l=-1 in the threshold region, both for the Born term and more so for the radiatively corrected case. I also discuss the role of the O(α) anomalous spin-flip contribution and its description in terms of the equivalent particle approach which survives the m_e -> 0 limit. Finally, I provide a brief account of the history of the O(α) radiative corrections to leptonic μ-decay. I trace the error done in the first (wrong) 1956 calculation of Behrends, Finkelstein and Sirlin. My account of this historical error differs from that recently given in a talk by Kinoshita on the occasion of the 70th birthday of Sirlin. | |
| dc.description | 9 pages, 1 eps-figure included, Invited talk at the XVII International Workshop on High Energy Physics and Quantum Field Theory (QFTHEP 2003), Samara-Saratov, 4-11 September 2003 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0402236 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0402236 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/43354 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Complete O(α) solution of the μ-decay problem | |
| dc.type | text |