g_D^∗_sD K^∗(892) and g_B^∗_sB K^∗(892) coupling constants in QCD sum rules

2010/09/30 by K. Azizi, H. Sundu · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1088/0954-3899/38/4/045005

published as J.Phys.G38:045005,2011 · 13 Pages and 11 Figures

arxiv created 2011/01/15 · arxiv updated 2011/03/03

Abstract

The coupling constants g_D^∗_sD K^∗(892) and g_B^∗_sB K^∗(892) are calculated in the framework of three-point QCD sum rules. The correlation functions responsible for these coupling constants are evaluated considering contributions of both D(B) and K^*(892) mesons as off-shell states, but in the absence of radiative corrections. The results, g_D^∗_sD K^∗(892)=(4.31±1.42) GeV^-1 and g_B^∗_sB K^∗(892)=(3.24±1.08) GeV^-1 are obtained for the considered strong coupling constants.

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