Differential decay rate for B → πlν semileptonic decays
نویسندگان
چکیده
منابع مشابه
Differential decay rate of B → πlν semileptonic decay with lattice NRQCD
We present a lattice QCD calculation of B → πlν semileptonic decay form factors in the small pion recoil momentum region. The calculation is performed on a quenched 163 × 48 lattice at β = 5.9 with the NRQCD action including the full 1/M terms. The form factors f1(v · kπ) and f2(v · kπ) defined in the heavy quark effective theory for which the heavy quark scaling is manifest are adpoted, and we...
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We present a lattice QCD calculation of the form factors and differential decay rates for semileptonic decays of the heavy-light mesons B and D to the final state πlν. The results are obtained with three methodological improvements over previous lattice calculations: a matching procedure that reduces heavyquark lattice artifacts, the first study of lattice-spacing dependence, and the introducti...
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We present our study on B → πlν semileptonic decay form factors using NRQCD action for heavy quark. In the analysis, we use the form factors f1(v · kπ) and f2(v · kπ) defined in the context of heavy quark effective theory by Burdman et al.. Since the NRQCD action for heavy quark respects the heavy quark symmetry, our results are described by the HQET form factors most naturally. From a quenched...
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B → πlν decay is studied in the effective theory of heavy quark with infinite mass limit. The leading order heavy flavor-spin independent universal wave functions which parameterize the relevant matrix elements are evaluated via light cone sum rule method in the effective theory. The important quark mixing matrix element |V ub | is then extracted via B → πlν decay mode.
متن کاملDifferential decay rate of B\pln semileptonic decay with lattice nonrelativistic QCD
S. Aoki, M. Fukugita, S. Hashimoto, K.-I. Ishikawa, N. Ishizuka, Y. Iwasaki, K. Kanaya, 1,4 T. Kaneko, Y. Kuramashi, M. Okawa, T. Onogi, S. Tominaga, N. Tsutsui, A. Ukawa, N. Yamada, and T. Yoshie Institute of Physics, University of Tsukuba, Tsukuba 305-8571, Japan Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582, Japan High Energy Accelerator Research Organization (KEK)...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2001
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)00954-9