Form factors for semi-leptonic and radiative decays of heavy mesons to light mesons
نویسندگان
چکیده
منابع مشابه
Form Factors for Semi-Leptonic and Radiative Decays of Heavy Mesons to Light Mesons
To know and understand form factors of hadronic currents is of decisive importance for analysing exclusive weak decays. The ratios of different form factors of a given process depend on the relativistic spin structure of initial and final particles. It is shown — assuming simple properties of the spectator particle — that these ratios can entirely be expresssed in terms of particle and quark ma...
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We used the Wilson action to generate 216 SU(3) gauge configurations on a 24 × 48 lattice at β = 6.2. The fermionic degrees of freedom were computed using an O(a) improved clover action with a non-perturbative value for CSW [1]. The inverse lattice spacing, set by the ρ mass is a−1 = 2.64 Gev. Four values of the heavy quark hopping parameter were used: 0.1200, 0.1233, 0.1266, 0.1299, where 0.12...
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I consider a model for heavy meson decays based on an effective quark-meson Lagrangian. The model is constrained by the known symmetries of QCD in the mQ → ∞ limit for the heavy quarks, and chiral symmetry in the light quark sector. Using a limited number of free parameters it is possible to compute several phenomenological quantities, e.g. the leptonic B and B∗∗ decay constants; the Isgur-Wise...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1996
ISSN: 0920-5632
DOI: 10.1016/0920-5632(96)00363-5