498 citations · 1.4k across the 18 of their papers we have counts for
5 papers · 1 filter
Calculation of 1/m^3 terms in the total semileptonic width of D mesons.
B. Blok, R. Dikeman, M. Shifman
We calculate the 1/ corrections in the inclusive semileptonic widths of mesons. We show that these are due to the novel penguin type operators that appear at this level…
Theory of Pre-Asymptotic Effects in Weak Inclusive Decays
M. A. Shifman
I give an introduction to the theory of preasymptotic effects based on the systematic OPE/HQET expansion in where is the heavy quark mass. The general idea is explain…
from OPE Sum Rules for Heavy Flavor Transitions
M. Shifman, N. G. Uraltsev, A. Vainshtein
We derive a model-independent upper bound for the axial-vector form factor of the $B\ra D^*$ transition at zero recoil, $F_{B\ra D^*}$. The form factor turns out to be noticeably l…
Heavy Quark Distribution Function in QCD and the ACM Model
I. Bigi, M. Shifman, N. Uraltsev +1
We show that the phenomenological \ACM ansatz is consistent with QCD through order in the description of $B\ra l\bar ν_l+X_u$ and $B\ra γ+X_s$ transitions, including their…
Non-Leptonic Decays of Beauty Hadrons -- from Phenomenology to Theory
I. Bigi, B. Blok, M. Shifman +2
`Anyone who keeps the ability to see beauty never grows old' Franz Kafka. In the last few years considerable progress has been achieved in our understanding of the decays of heavy…