Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-09-30
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 21 figures
Scientific paper
We discuss the QCD sum rule calculation of the heavy-quark effective theory parameters, $\lambda_E$ and $\lambda_H$, which correspond to matrix elements representing quark-gluon three-body components in the $B$-meson wavefunction. We derive the sum rules for $\lambda_{E,H}$ calculating the new higher-order QCD corrections, i.e., the order $\alpha_s$ radiative corrections to the Wilson coefficients associated with the dimension-5 quark-gluon mixed condensates, and the power corrections due to the dimension-6 vacuum condensates. We find that the new radiative corrections significantly improve the stability of the corresponding Borel sum rules and lead to the reduction of the values of $\lambda_{E,H}$. We also discuss the renormalization-group improvement for the sum rules and present update on the values of $\lambda_{E,H}$.
Nishikawa Tetsuo
Tanaka Kazuhiro
No associations
LandOfFree
QCD sum rules for quark-gluon three-body components in the B meson does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with QCD sum rules for quark-gluon three-body components in the B meson, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QCD sum rules for quark-gluon three-body components in the B meson will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-668294