Threshold expansion for heavy-light systems and flavor off-diagonal current-current correlators

Details Threshold expansion for heavy-light systems and flavor off-diagonal current-current correlators Threshold expansion for heavy-light systems and flavor off-diagonal current-current correlators

2001-10-02

arxiv.org/abs/hep-ph/0110028v1

Phys.Rev. D66 (2002) 011502

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, revtex4

Scientific paper

10.1103/PhysRevD.66.011502

An expansion scheme is developed for Feynman diagrams describing the
production of one massive and one massless particle near the threshold. As an
example application, we compute the correlators of heavy-light quark currents,
(\bar b gamma_mu u) and (\bar b gamma_5 u), through O(alpha_s^2).

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