Enhancement of the hadronic b quark decays

Abstract

A class of previously unknown strong-interaction corrections is found to enhance the rate of non-leptonic decays of the b quark by 5-8 percent. This effect decreases the predicted fraction of semi-leptonic decays and brings it into fair agreement with experimental results. As well as solving a long-standing puzzle of measurements disagreeing with the Standard Model prediction, our work suggests a way for future precise studies of non-leptonic $b$ quark decays and their application to searching for "new physics."

arXiv comment5 pages, 3 figures

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• Contribution of the Darwin operator to non-leptonic decays of heavy quarks
• The heavy quark expansion for lifetimes: Towards the QCD corrections to power suppressed terms
• Two-Loop master integrals for heavy-to-light form factors of two different massive fermions
• Three-loop planar master integrals for heavy-to-light form factors
• Selected Topics in Heavy Flavour Physics
• Measurement of partial branching fractions of inclusive charmless B meson decays to K+, K0, and pi+
• Application of quasi-optimal weights to searches of anomalies. Statistical criteria for step-like anomalies in cumulative spectra