Rescattering effects in charmless B_{u,d,s} to P P decays
| dc.creator | Chua, Chun-Khiang | |
| dc.date | 2007-12-27 | |
| dc.date | 2008-09-09 | |
| dc.date.accessioned | 2026-07-07T11:54:52Z | |
| dc.date.available | 2026-07-07T11:54:52Z | |
| dc.description | We study the final-state interaction (FSI) effects in charmless B_{u,d,s} to PP decays. We consider a FSI approach with both short- and long-distance contributions, where the former are from in-elastic channels and are contained in factorization amplitudes, while the latter are from the residual rescattering among PP states. Flavor SU(3) symmetry is used to constrain the residual rescattering S-matrix. We fit to all available data on the CP-averaged decay rates and CP asymmetries, and make predictions on unmeasured ones. Our main results are as follows: (i) Results are in agreement with data in the presence of FSI. (ii) For B decays, the pi^+pi^- and pi^0pi^0 rates are suppressed and enhanced respectively by FSI. (iii) The FSI has a large impact on direct CP asymmetries of many modes. (iv) The deviation (Delta A) between A(B{bar}^0 to K^-pi^+) and A(B^-to K^-π^0) can be understood in the FSI approach. (v) Sizable and complex color-suppressed tree amplitudes, which are crucial for the large π^0π^0 rate and Delta A, are generated through exchange rescattering. The correlation of the ratio B(pi^0pi^0)/B(pi^+pi^-) and Delta A is studied. (vi) The B^- to pi^-pi^0 direct CP violation is very small and is not affected by FSI. (vii) Several B_s decay rates are enhanced. In particular, the eta'eta' branching ratio is enhanced to the level of 1.0X10^{-4}, which can be checked experimentally. (viii) Time-dependent CP asymmetries S in B_{d,s} decays are studied. CP asymmetries in these modes will be useful to test the SM. | |
| dc.description | 33 pages, 6 figures, version to appear in Phys. Rev. D | |
| dc.identifier | https://arxiv.org/abs/0712.4187 | |
| dc.identifier | http://arxiv.org/abs/0712.4187 | |
| dc.identifier | Phys.Rev.D78:076002,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.076002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205060 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Rescattering effects in charmless B_{u,d,s} to P P decays | |
| dc.type | text |