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hep-ph1998
Theoretical Status of B -> Xs gamma Decays
Matthias Neubert
We review the theoretical understanding of the branching ratio and photon-energy spectrum in B -> Xs gamma decays at next-to-leading order in QCD, including consistently the effect…
hep-ph1998
Looking for the Unexpected: Direct CP Violation in B -> X_s gamma Decays
Matthias Neubert
The observation of a sizable direct CP asymmetry in the inclusive decays B -> X_s gamma would be a clean signal of New Physics. In the Standard Model, this asymmetry is below 1% in…
hep-ph1998
Heavy-Quark Effective Theory and Weak Matrix Elements
Matthias Neubert
Recent developments in the theory of weak decays of heavy flavours are reviewed. Applications to exclusive semileptonic B decays, the semileptonic branching ratio and charm countin…