The Rule of Discarding $1/N_c$ in Inclusive Weak Decays
High Energy Physics - Phenomenology
2009-10-22 v2
Abstract
We continue to investigate the effects of the (dominant) subleading operator of the type in the parts of the weak nonleptonic amplitudes. If the previous work concentrated on exclusive decays now we analyse inclusive widths in a certain kinematic limit. Deviations from the parton model predictions are found due to soft-gluon color exchange. In the interference (i.e. ) terms they are stronger than in the non-interference terms. The sign is negative so that the parts tend to cancel. The absolute value of the effect is of order 1 in D-mesons and of order 0.50 in B mesons.
Keywords
Cite
@article{arxiv.hep-ph/9207236,
title = {The Rule of Discarding $1/N_c$ in Inclusive Weak Decays},
author = {B. Blok and M. Shifman},
journal= {arXiv preprint arXiv:hep-ph/9207236},
year = {2009}
}
Comments
preprint NSF-ITP-92-103,TPI-MINN-33/T, 27 pages +2 fig. we eliminate several minor misprints