Mainz 2014 – scientific programme
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T: Fachverband Teilchenphysik
T 29: Flavourphysik (Theorie)
T 29.6: Talk
Monday, March 24, 2014, 18:00–18:15, P6
Strong couplings from Light-cone sum rules — Alexander Khodjamirian1, •Patrick Gelhausen1, Senti Imsong1, and Yu-Ming Wang2 — 1Universität Siegen — 2TU München
QCD Light-cone sum rules (LCSR) proved to be a reliable QCD based tool for the determination of form factors of heavy-to-light transitions like B(D) → π. We revisit the LCSR for B*Bπ and D*Dπ strong couplings accessible via the same correlation function, employing the double dispersion relations. These sum rules are considerably improved by additional radiative corrections, updates of higher twist contributions and input parameters. We also probed various versions of double dispersion relations. The LCSRs were extended to strong couplings of heavy-light mesons containing a strange quark.