Reexamining charmless B\to PV decays in QCD factorization approach
| dc.creator | Li, Xinqiang | |
| dc.creator | Yang, Yadong | |
| dc.date | 2006-02-24 | |
| dc.date | 2006-06-12 | |
| dc.date.accessioned | 2026-07-07T10:44:48Z | |
| dc.date.available | 2026-07-07T10:44:48Z | |
| dc.description | Using the QCD factorization approach, we reexamine the two-body hadronic charmless $B$-meson decays to final states involving a pseudoscalar~($P$) and a vector~($V$) meson, with inclusion of the penguin contractions of spectator-scattering amplitudes induced by the $b\to D g^\ast g^\ast$~(where $D=d$ or $s$, and $g^\ast$ denotes an off-shell gluon) transitions, which are of order $α_s^2$. Their impacts on the CP-averaged branching ratios and CP-violating asymmetries are examined. We find that these higher order penguin contraction contributions have significant impacts on some specific decay modes. Since $B\to πK^{\ast}$, $K ρ$ decays involve the same electro-weak physics as $B\to πK$ puzzles, we present a detailed analysis of these decays and find that the five R-ratios for $B\to πK^{\ast}$, $K ρ$ system are in agreement with experimental data except for $R(πK^*)$. Generally, these new contributions are found to be important for penguin-dominated $B\to PV$ decays. | |
| dc.description | 45 pages, 12 figures. Theoretical uncertainties considered. Gauge invariance proved. Version to appear in PRD | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0602224 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0602224 | |
| dc.identifier | Phys.Rev.D73:114027,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.73.114027 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182725 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Reexamining charmless B\to PV decays in QCD factorization approach | |
| dc.type | text |