Precise predictions for B -> Xs l+ l- in the large q^2 region
| dc.creator | Ligeti, Zoltan | |
| dc.creator | Tackmann, Frank J. | |
| dc.date | 2007-07-12 | |
| dc.date | 2007-09-05 | |
| dc.date.accessioned | 2026-07-07T11:17:45Z | |
| dc.date.available | 2026-07-07T11:17:45Z | |
| dc.description | The inclusive B -> Xs l+ l- decay rate in the large q^2 region (q^2 > m_{ψ'}^2) receives significant nonperturbative corrections. The resulting uncertainties can be drastically reduced by normalizing the rate to the B -> Xu l nu rate with the same q^2 cut, which allows for much improved tests of short distance physics. We calculate this ratio, including the order 1/m_b^3 nonperturbative corrections and the analytically known NNLO perturbative corrections. Since in the large q^2 region an inclusive measurement may be feasible via a sum over exclusive states, our results could be useful for measurements at LHCb and possibly for studies of B -> Xd l+ l-. | |
| dc.description | 7 pages, 4 figures, v2: corrected Eq. (6), journal version | |
| dc.identifier | https://arxiv.org/abs/0707.1694 | |
| dc.identifier | http://arxiv.org/abs/0707.1694 | |
| dc.identifier | Phys.Lett.B653:404-410,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.07.070 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/193111 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Precise predictions for B -> Xs l+ l- in the large q^2 region | |
| dc.type | text |