Possible complex annihilation and B -> K pi direct CP asymmetry
| dc.creator | Chay, Junegone | |
| dc.creator | Li, Hsiang-nan | |
| dc.creator | Mishima, Satoshi | |
| dc.date | 2007-11-19 | |
| dc.date | 2007-11-26 | |
| dc.date.accessioned | 2026-07-07T11:54:17Z | |
| dc.date.available | 2026-07-07T11:54:17Z | |
| dc.description | We point out that a sizable strong phase could be generated from the penguin annihilation in the soft-collinear effective theory for B meson decays. Keeping a small scale suppressed by O(Lambda/m_b), Lambda being a hadronic scale and m_b the b quark mass, in the denominators of internal particle propagators without expansion, the resultant strong phase can accommodate the data of the B^0 -> K^-+ pi^+- direct CP asymmetry. Our study reconciles the opposite conclusions on the real or complex penguin annihilation amplitude drawn in the soft-collinear effective theory and in the perturbative QCD approach based on k_T factorization theorem. | |
| dc.description | 8 pages, 1 figure, added references | |
| dc.identifier | https://arxiv.org/abs/0711.2953 | |
| dc.identifier | http://arxiv.org/abs/0711.2953 | |
| dc.identifier | Phys.Rev.D78:034037,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.034037 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204841 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Possible complex annihilation and B -> K pi direct CP asymmetry | |
| dc.type | text |