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Published on: November 15, 2013
Enhancement of hadronic b quark decays
Andrzej Czarnecki1, Maciej Slusarczyk, Fyodor Tkachov
1Department of Physics, University of Alberta Edmonton, Canada.
Abstract:
A class of previously unknown strong-interaction corrections is found to enhance the rate of nonleptonic decays of the quark by 5%-8%. This effect decreases the predicted fraction of semileptonic 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 nonleptonic quark decays and their application to searching for "new physics."
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