Determination of gamma from Charmless B --> M1 M2 Decays Using U-Spin
| dc.creator | Soni, Amarjit | |
| dc.creator | Suprun, Denis A. | |
| dc.date | 2006-09-08 | |
| dc.date.accessioned | 2026-07-07T11:05:43Z | |
| dc.date.available | 2026-07-07T11:05:43Z | |
| dc.description | In our previous paper we applied U-spin symmetry to charmless hadronic B+- --> M0 M+- decays for the purpose of precise extraction of the unitarity angle gamma. In this paper we extend our approach to neutral B0 and Bs --> M1 M2 decays. A very important feature of this method is that no assumptions regarding relative sizes of topological decay amplitudes need to be made. As a result, this method avoids an uncontrollable theoretical uncertainty that is often related to the neglect of some topological diagrams (e.g., exchange and annihilation graphs) in quark-diagrammatic approaches. In charged B+- decays, each of the four data sets, P0 P+-, P0 V+-, V0 P+- and V0 V+-, with P=pseudoscalar and V=vector, can be used to obtain a value of gamma. Among neutral decays, only experimental data in the B0, Bs --> P- P+ subsector is sufficient for a U-spin fit. Application of the U-spin approach to the current charged and neutral B decay data yields: gamma=(80^{+6}_{-8}) degrees. In this method, which is completely data driven, in a few years we should be able to obtain a model independent determination of gamma with an accuracy of O(few degrees). | |
| dc.description | 31 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609089 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609089 | |
| dc.identifier | Phys.Rev.D75:054006,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.054006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189289 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Determination of gamma from Charmless B --> M1 M2 Decays Using U-Spin | |
| dc.type | text |