Subleading Isgur-Wise form factors and O(1/m_Q) corrections to the semileptonic decays B->D_1 l\barνand B->D_2^* l\barν

Details Subleading Isgur-Wise form factors and O(1/m_Q) corrections to the semileptonic decays B->D_1 l\barνand B->D_2^* l\barν Subleading Isgur-Wise form factors and O(1/m_Q) corrections to the semileptonic decays B->D_1 l\barνand B->D_2^* l\barν

2001-02-24

arxiv.org/abs/hep-ph/0102299v2

Phys.Rev. D64 (2001) 014034

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX, 18 pages including 3 PS figures. Errors are estimated, some misprints are corrected and minor wording modification in

Scientific paper

10.1103/PhysRevD.64.014034

Exclusive semileptonic decays B->D_1(2420)l\bar\nu and B->D_2^*(2460)l\bar\nu are studied at the subleading order of the heavy quark expansion. The subleading Isgur-Wise functions resulted from the kinetic energy and chromomagnetic corrections to the HQET Lagrangian are calculated by QCD sum rules in the framework of the heavy quark effective theory. The decay rates and branching ratios are computed with the inclusion of the order of 1/m_Q corrections. It is found that the 1/m_Q correction to the decay rate is not large for B->D^*_2 but is very large for B->D_1.

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