Semi-inclusive hadronic B decays in the endpoint region

Abstract

We consider in the soft-collinear effective theory semi-inclusive hadronic B decays, B-> XM, in which an energetic light meson M near the endpoint recoils against an inclusive jet X. We focus on a subset of decays where the spectator quark from the B meson ends up in the jet. The branching ratios and direct CP asymmetries are computed to next-to-leading order accuracy in alpha_s and to leading order in 1/m_b. The contribution of charming penguins is extensively discussed, and a method to extract it in semi-inclusive decays is suggested. Subleading 1/m_b corrections and SU(3) breaking effects are discussed.

arXiv comment31 pages, 7 figures

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• New Physics at a Super Flavor Factory
• Null tests of the Standard Model at an International Super $B$ Factory
• Nonperturbative Charming Penguin Contributions to Isospin Asymmetries in Radiative B decays
• Probing electroweak physics using B -> XM decays in the endpoint region
• Leading SU(3) breaking in lightcone distribution amplitudes
• Semi-inclusive hadronic B decays as null tests of the Standard Model