CP asymmetry in flavour-specific B decays
| dc.creator | Nierste, Ulrich | |
| dc.date | 2004-06-26 | |
| dc.date | 2006-07-22 | |
| dc.date.accessioned | 2026-07-07T06:36:38Z | |
| dc.date.available | 2026-07-07T06:36:38Z | |
| dc.description | I first discuss the phenomenology of a^q_fs (q=d,s), which is the CP asymmetry in flavour-specific B_q decays such as B_d -> X l^+ nu-bar_l or B_s -> D_s^- pi^+. a^q_fs can be obtained from the time evolution of any untagged B_q decay. Then I present recently calculated next-to-leading-order QCD corrections to a_fs^q, which reduce the renormalisation scheme uncertainties significantly. For the Standard Model we predict a^d_fs=-(5.0 +/- 1.1)*10^(-4) and a^s_fs= (2.1 +/-0.4)*10^-5. As a by-product we determine the ratio of the width difference in the B_d system and the average B_d width to (Delta Gamma_d)/Gamma_d = (3.0 +/- 1.2)*10^(-3) at next-to-leading order in QCD. | |
| dc.description | 7 pages, extended version of talk at Moriond conference on Electroweak Interactions and Unified Theories, 2004. Mistake in Eq. (13) corrected | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0406300 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0406300 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/100144 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | CP asymmetry in flavour-specific B decays | |
| dc.type | text |