Possible New Physics Signals in b -> s gamma and b -> s l^+ l^-
| dc.creator | Kim, Yeong Gyun | |
| dc.creator | Ko, P. | |
| dc.creator | Lee, Jae Sik | |
| dc.date | 1998-10-13 | |
| dc.date | 1999-01-21 | |
| dc.date.accessioned | 2026-07-07T04:05:24Z | |
| dc.date.available | 2026-07-07T04:05:24Z | |
| dc.description | We consider possible new physics contributions to b\to s l^+ l^- assuming the new physics modifies (chromo)magnetic and electric form factors in b\to s γ^* and b\to s g with the same chirality structure as in the standard model. Parametrizing the new physics effects on b\to s γ^* and b\to s g in terms of four real parameters, one finds that there are enough region of parameter space in which the measured branching ratio for B \to X_s γcan be accomodated, and the predicted CP violation effect could be as large as \sim 30%. Moreover, the branching ratio and the forward-backward asymmetry of a lepton in B \to X_s l^+ l^- and the tau polarization asymmetry in B \to X_s τ^+ τ^- can be deviated from the SM predictions by a factor of \sim 2, which can be accessible at B factories. We also discuss these observables in a specific class of supersymmetric models with gluino-mediated flavor changing neutral current (FCNC). | |
| dc.description | 30 pages, 10 figures. Updated data on b -> s gamma are used, to appear Nucl. Phys. B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9810336 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9810336 | |
| dc.identifier | Nucl.Phys. B544 (1999) 64-88 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48398 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Possible New Physics Signals in b -> s gamma and b -> s l^+ l^- | |
| dc.type | text |