Theorie-Palaver

Oct. 23, 2007 at 2:30 p.m. in Sozialraum der WA ThEP

Upalaparna Banerjee

Federico Gasparotto

Pouria Mazloumi

Yong Xu

B<SMALL></SMALL>0 - <span style="text-decoration:overline">B</span><SMALL></SMALL>0 mixing beyond factorization: QCD sum rules analysis
Prof. Dr. Alexei Pivovarov (Siegen)


Corrections to factorization approximations for the matrix elements of B<SMALL></SMALL>0 - <span style="text-decoration:overline">B</span><SMALL></SMALL>0 meson mixing are computed within QCD sum rules approach. Both nonperturbative and perturbative corrections are analyzed. Nonperturbative corrections are well under control and small while perturbative corrections are found to be of order 10%.