Decay of heavy-light hybrids in HQET sum rules

Details Decay of heavy-light hybrids in HQET sum rules Decay of heavy-light hybrids in HQET sum rules

1998-12-18

arxiv.org/abs/hep-ph/9812430v3

Phys.Rev.D60:114004,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, latex file, 4 ps figs, Published version, some numerical results changed

Scientific paper

10.1103/PhysRevD.60.114004

The decay widths of the 0^{++} and 1^{-+} heavy-light hybrids to B(D) and pion are calculated by using the QCD sum rules. The interpolated current of the hybrid is chosen as $g\bar q\gamma_{\alpha}G_{\alpha\mu}^aT^ah_{\it v}(x)$. In order to simplify the calculation and avoid the ambiguity of three-point correlation function, a two-point correlation function between the pion and vacuum is used instead. The decay width of the $0^{++}\to B(D)$ is about 12(16) MeV while the $1^{-+}\to B(D)$ is around 0.4(1.8) MeV. We keep the leading order of 1/M_Q expansion in our calculation for convenience.

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