Spectator scattering at NLO in non-leptonic B decays: Tree amplitudes
| dc.creator | Beneke, M. | |
| dc.creator | Jager, S. | |
| dc.date | 2005-12-28 | |
| dc.date.accessioned | 2026-07-07T10:44:34Z | |
| dc.date.available | 2026-07-07T10:44:34Z | |
| dc.description | We compute the 1-loop (alpha_s^2) correction to hard spectator scattering in non-leptonic B decay tree amplitudes. This forms part of the NNLO contribution to the QCD factorization formula for hadronic B decays, and introduces a new rescattering phase that corrects the leading-order result for direct CP asymmetries. Among the technical issues, we discuss the cancellation of infrared divergences, and the treatment of evanescent four-quark operators. The infrared finiteness of our result establishes factorization of spectator scattering at the 1-loop order. Depending on the values of hadronic input parameters, the new 1-loop correction may have a significant impact on tree-dominated decays such as B -> pi pi. | |
| dc.description | 28 pages, 5 figures, LaTeX | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0512351 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0512351 | |
| dc.identifier | Nucl.Phys.B751:160-185,2006 | |
| dc.identifier | doi:10.1016/j.nuclphysb.2006.06.010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182639 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Spectator scattering at NLO in non-leptonic B decays: Tree amplitudes | |
| dc.type | text |