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Model-Independent Analysis of B -> pi K Decays and Bounds on the Weak Phase gamma
Matthias Neubert
A general parametrization of the amplitudes for the rare two-body decays B -> pi K is introduced, which makes maximal use of theoretical constraints arising from flavour symmetries…
Determination of the Weak Phase gamma from Rate Measurements in B^+- -> pi K, pi pi Decays
Matthias Neubert, Jonathan L. Rosner
A method is described which, under the assumption of SU(3) symmetry, allows one to determine the angle gamma=Arg(Vub^*) of the unitarity triangle from time-independent measurements…
New Bound on gamma from B^+- -> pi K Decays
M. Neubert, J. L. Rosner
A bound on the angle gamma of the unitarity triangle is derived using experimental information on the CP-averaged branching ratios for the rare decays B^+- -> pi^+- K^0 and B^+- ->…
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…
Light Rays of New Physics: CP Violation in B -> Xs gamma Decays
Matthias Neubert
The observation of a sizable CP asymmetry in the inclusive decays B -> Xs gamma would be a clean signal of New Physics. In the Standard Model, this asymmetry is below 1 % in magnit…
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…
QCD Anatomy of B -> X_s gamma Decays
A. L. Kagan, M. Neubert
We present an updated next-to-leading order analysis of the B -> X_s gamma branching ratio and photon spectrum, including consistently the effects of Fermi motion in the heavy-quar…
Direct CP Violation in B -> X_s gamma Decays as a Signature of New Physics
A. L. Kagan, M. Neubert
We argue that the observation of a sizable direct CP asymmetry A_{CP} in the inclusive decays B -> X_s gamma would be a clean signal of New Physics. In the Standard Model, A_{CP} c…
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…