Does the present data on B_s - bar B_s mixing rule out a large enhancement in the branching ratio of B_s --> mu+ mu- ?
| dc.creator | Alok, Ashutosh Kumar | |
| dc.creator | Sankar, S. Uma | |
| dc.date | 2007-04-02 | |
| dc.date.accessioned | 2026-07-07T07:54:24Z | |
| dc.date.available | 2026-07-07T07:54:24Z | |
| dc.description | In this letter, we consider the constraints imposed by the recent measurement of B_s - bar B_s mixing on the new physics contribution to the rare decay B_s --> mu+ mu-. New physics in the form vector and axial-vector couplings is already severely constrained by the data on B --> (K,K*) mu+ mu-. Here, we show that B_s - bar B_s mixing data, together with the data on K0 - bar K0 mixing and K_L --> mu+ mu- decay rate, strongly constrain the scalar-pseudoscalar contribution to B_s --> mu+ mu-. We conclude that new physics can at best lead to a factor of 2 increase in the branching ratio of B_s --> mu+ mu- compared to its Standard Model expectation. | |
| dc.description | 7 pages, no figures | |
| dc.identifier | https://arxiv.org/abs/0704.0252 | |
| dc.identifier | http://arxiv.org/abs/0704.0252 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/126595 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Does the present data on B_s - bar B_s mixing rule out a large enhancement in the branching ratio of B_s --> mu+ mu- ? | |
| dc.type | text |