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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 anglegamma. In this paper we extend our approach to neutral B0 and Bs --> M1 M2decays. A very important feature of this method is that no assumptionsregarding relative sizes of topological decay amplitudes need to be made. As aresult, this method avoids an uncontrollable theoretical uncertainty that isoften related to the neglect of some topological diagrams (e.g., exchange andannihilation graphs) in quark-diagrammatic approaches. In charged B+- decays,each of the four data sets, P0 P+-, P0 V+-, V0 P+- and V0 V+-, withP=pseudoscalar and V=vector, can be used to obtain a value of gamma. Amongneutral decays, only experimental data in the B0, Bs --> P- P+ subsector issufficient for a U-spin fit. Application of the U-spin approach to the currentcharged and neutral B decay data yields: gamma=(80^{+6}_{-8}) degrees. In thismethod, which is completely data driven, in a few years we should be able toobtain a model independent determination of gamma with an accuracy of O(fewdegrees).Comment: 31 page

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Determination of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi></mml:math>from charmless<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msub><mml:mi>M</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:msub><mml:mi>M</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>decays using U-spin

Determination ofγfrom charmlessB→M1M2decays using U-spin