Flavorful Ways to New Physics

Strong couplings from Light-cone sum rules

Oct 30, 2014, 11:50 AM

20m

Waldhotel Zollernblick

Young Investigator Talks

Speaker

Mr Patrick Gelhausen (University of Siegen)

Description

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 $B(D)\to \pi$. We revisit the LCSR for $B^{\ast }B\pi$ and $D^{\ast }D\pi$ 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.

Presentation materials

Slides

02-LCSRVortragFW2.pdf