A new model-independent way of extracting |V_ub/V_cb|
| dc.creator | Aglietti, Ugo | |
| dc.creator | Ciuchini, Marco | |
| dc.creator | Gambino, Paolo | |
| dc.date | 2002-04-12 | |
| dc.date.accessioned | 2026-07-07T11:31:14Z | |
| dc.date.available | 2026-07-07T11:31:14Z | |
| dc.description | The ratio between the photon spectrum in B -> X_s gamma and the differential semileptonic rate wrt the hadronic variable M_X/E_X is a short-distance quantity calculable in perturbation theory and independent of the Fermi motion of the b quark in the B meson. We present a NLO analysis of this ratio and show how it can be used to determine |V_ub/V_cb| independently of any model for the shape function. We also discuss how this relation can be used to test the validity of the shape-function theory on the data. | |
| dc.description | 20 pages, 3 figs | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0204140 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0204140 | |
| dc.identifier | Nucl.Phys.B637:427-444,2002 | |
| dc.identifier | doi:10.1016/S0550-3213(02)00464-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/197201 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A new model-independent way of extracting |V_ub/V_cb| | |
| dc.type | text |