Nonperturbative QCD corrections to the effective coefficients of the four-Fermi operators

Abstract

We calculate the leading nonperturbative contributions to the effective Wilson coefficient of the four-fermion operators arising from the QCD penguin, and we demonstrate how the usual perturbative one loop contribution is augmented by nonperturbative condensates. These corrections, which are obtained by quark and gluon condensate insertions into the quark loops, enter at the next-to-leading logarithm precision. Our results indicate for the charmed quark loop that the gluon condensate contribution is quite sensitive to the momentum transfer to the quark-antiquark pair.

12 pages, Revtex, 3 postscript figures (included)

References in corpus (11)

• Experimental Tests of Factorization in Charmless Non-Leptonic Two-Body B Decays
• CP-Violating Asymmetries in Charmless Non-Leptonic Decays $B\to PP,PV,VV$ in the Factorization Approach
• B to eta' + X and The QCD Anomaly
• Enhanced $b\to sg$ Decay, Inclusive ${\eta }^{\prime }$ Production, and the Gluon Anomaly
• Two-Body B Meson Decays to $\eta$ and ${\eta }^{{}^{\prime }}$ -- Observation of $B\to \eta${'}K$
• B -> K eta' decay as unique probe of eta' meson
• Non-spectator contribution: A mechanism for inclusive B-> X_s eta' and exclusive B-> K(*) eta' decays
• Observation of High Momentum ${\eta }^{\prime }$ Production in B Decay
• Why is the B -> eta' X decay width so large ?
• The Color-Octet intrinsic charm in ${\eta }^{\prime }$ and $B\to {\eta }^{\prime }X$ decays
• Possible large direct CP asymmetry in hadronic B+- -> π+- η' decays