出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The present NLL prediction for the decay rate of the rare inclusive process ¯B ! Xsg has a large
uncertainty due to the charm mass renormalization scheme ambiguity. We estimate that this
uncertainty will be reduced by a factor of 2 at the NNLL level. This is a strong motivation
for the on-going NNLL calculation, which will thus significantly increase the sensitivity of the
observable ¯B ! Xsg to possible new degrees of freedom beyond the SM. We also give a brief
status report of the NNLL calculation.
