منابع مشابه
B-decays in the heavy-quark expansion
Progress in the theoretical description of B-meson decays, in particular decays to light hadrons, is reviewed. The factorization properties of such decays can be analyzed using the softcollinear effective theory. Applications of the effective theory to both inclusive and exclusive decays are discussed. FERMILAB-CONF-04-309-T hep-ph/0411065
متن کاملB Decays and the Heavy-Quark Expansion
We review the theory and phenomenology of heavy-quark symmetry, exclusive weak decays of B mesons, inclusive decay rates and lifetimes of b hadrons. To appear in the Second Edition of Heavy Flavours, edited by A.J. Buras and M. Lindner (World Scientific, Singapore) CERN-TH/97-24 February 1997 B DECAYS AND THE HEAVY-QUARK EXPANSION MATTHIAS NEUBERT Theory Division, CERN, CH-1211 Geneva 23, Switz...
متن کاملHeavy Quark Expansion and Inclusive Decays
Some of the recent developments in the theory and applications of the heavy quark expansion for inclusive processes are reviewed. The topics concern semileptonic and nonleptonic decays, lifetimes and the semileptonic branching fraction.
متن کاملFactorization and hadronic B decays in the heavy quark limit
Recent theoretical investigations [M. Beneke et al. Phys. Rev. Lett. 83, 1914 (1999)] of two-body hadronic B decays have provided justification, at least to order αs, for the use of the factorization ansatz to evaluate the B decay matrix elements provided the decay meson containing the spectator quark is not heavy. Motivated by this, we present simplified formulae for a wide range of B decays i...
متن کاملEffective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays
In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. The gluonic penguin structure of hadronic decays is studied thro...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2006
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2005.08.034