Weak phase alpha from B^0-> a_1^{+-}(1260) pi^{-+}
| dc.creator | Gronau, M. | |
| dc.creator | Zupan, J. | |
| dc.date | 2005-12-12 | |
| dc.date | 2006-02-20 | |
| dc.date.accessioned | 2026-07-07T10:44:30Z | |
| dc.date.available | 2026-07-07T10:44:30Z | |
| dc.description | Quasi two-body decays B^0(t)-> a_1^{+-}(1260) pi^{-+} identified by four charged pions determine a phase alpha_eff, which is equal to the weak phase alpha in the limit of vanishing penguin amplitudes. Applying flavor SU(3) to these decays and to B->a_1 K and B->K_1 pi, with K_1 an admixture of K_1(1270) and K_1(1400), we derive expressions providing bounds on alpha-alpha_{eff}. Higher precision in alpha may be achieved by an overall fit to a complete set of SU(3) related measurements. A method is sketched applying isospin symmetry to time-dependent invariant mass distributions in B->pi^+ pi^- pi^0 pi^0. | |
| dc.description | 4 pages, small changes, to be published in Physical Review D | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0512148 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0512148 | |
| dc.identifier | Phys.Rev.D73:057502,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.73.057502 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182615 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Weak phase alpha from B^0-> a_1^{+-}(1260) pi^{-+} | |
| dc.type | text |