The Rule of Discarding 1 / N c in Inclusive Weak
نویسنده
چکیده
We calculate the leading preasymptotic correction to the inclusive width b → ¯ ccs (two massive quarks in the final state) due to the operator σ H. It is found that this correction tends to cancel the 1/N c part of the inclusive width calculated using naive factorization. The absolute value of the effect is of order 0.25. We also discuss how quark-hadron duality is realized in the inclusive decays.
منابع مشابه
Nonperturbative QCD Effects in Weak
QCD-based analysis of nonfactorizable parts of weak nonleptonic amplitudes is reported. Nonperturbative effects due to soft gluon exchange play a key role leading to the emergence of a dynamical rule of discarding 1/N c corrections.
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