QCD sum rule analysis of the subleading Isgur-Wise form-factor tau_1(v.v') and tau_2(v.v') for B->D_1 l\barνand B->D_2^* l\barν

Details QCD sum rule analysis of the subleading Isgur-Wise form-factor tau_1(v.v') and tau_2(v.v') for B->D_1 l\barνand B->D_2^* l\barν QCD sum rule analysis of the subleading Isgur-Wise form-factor tau_1(v.v') and tau_2(v.v') for B->D_1 l\barνand B->D_2^* l\barν

1999-09-09

arxiv.org/abs/hep-ph/9909307v1

Phys.Rev. D61 (2000) 054010

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX, 18 pages including 3 PS figures

Scientific paper

10.1103/PhysRevD.61.054010

We present a QCD sum rule calculation of the Isgur-Wise form-factor tau_1(v.v') and tau_2(v.v') for the semileptonic decays B->D_1(2420)l\bar\nu and B->D_2^*(2460)l\bar\nu in the framework of heavy quark effective theory. These two universal functions, associated with the matching of the weak currents in QCD onto those in the effective theory, appear at the order 1/m_Q in the heavy quark expansion of meson weak decay form factors.

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