Theoretical Status of epsilon'/epsilon
| dc.creator | Buras, Andrzej J. | |
| dc.date | 1999-08-18 | |
| dc.date.accessioned | 2026-07-07T04:07:50Z | |
| dc.date.available | 2026-07-07T04:07:50Z | |
| dc.description | We review the present theoretical status of the CP violating ratio epsilon'/epsilon in the Standard Model (SM) and confront its estimates with the most recent data. In particular we review the present status of the most important parameters m_s, B_6^(1/2), B_8^(3/2), Λ_MSbar and Omega_{η+η'}. While the sign and the order of magnitude of SM estimates for epsilon'/epsilon agree with the data, for central values of these parameters most estimates of epsilon'/epsilon in the SM are substantially below the grand experimental average (21.2\pm 4.6)\cdot 10^{-4}. Only in a small corner of the parameter space can epsilon'/epsilon in SM be made consistent with experimental results. In view of very large theoretical uncertainties, it is impossible to conclude at present that the data on epsilon'/epsilon indicate new physics. A brief discussion of epsilon'/epsilon beyond the Standard Model is presented. | |
| dc.description | invited talk given at KAON 99, Chicago, June 21-26, 1999. Main latex-file, 1 figure and one related latex file, 23 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9908395 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9908395 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/49300 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Theoretical Status of epsilon'/epsilon | |
| dc.type | text |