New physics upper bound on the branching ratio of B_s --> l+ l- gamma
| dc.creator | Alok, Ashutosh Kumar | |
| dc.creator | Sankar, S. Uma | |
| dc.date | 2006-03-31 | |
| dc.date | 2006-05-10 | |
| dc.date.accessioned | 2026-07-07T10:44:56Z | |
| dc.date.available | 2026-07-07T10:44:56Z | |
| dc.description | We consider the effect of new physics on the branching ratio of B_s--> l+ l- gamma where l=e,mu. If the new physics is of the form scalar/pseudoscalar, then it makes no contribution to B_s--> l+ l- gamma, unlike in the case of B_s--> l+ l-, where it can potentially make a very large contribution. If the new physics is in the form of vector/axial-vector operators, then present data on B-->(K,K^*)l+ l-, does not allow a large enhancement for B_s--> l+ l- gamma. If the new physics is in the form of tensor/pseudotensor operators, then the data on B-->(K,K^*)l+ l- gives no useful constraint but the data on B-->K^* gamma does. Here again, a large enhancement of B(B_s--> l+ l- gamma), much beyond the Standard Model expectation, is not possible. Hence, we conclude that the present data on b-->s transitions allow a large boost in B_s--> l+ l- but not in B_s--> l+ l- gamma. | |
| dc.description | Additional constraints from current data on B-->K^* gamma are considered. Present data on b-->s transitions allow a large boost in B(B_s-->l+ l-) but not in B(B_s-->l+ l- gamma) | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0603262 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0603262 | |
| dc.identifier | Mod.Phys.Lett.A22:1319-1328,2007 | |
| dc.identifier | doi:10.1142/S0217732307021901 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182771 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | New physics upper bound on the branching ratio of B_s --> l+ l- gamma | |
| dc.type | text |