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24 papers · 2 filters
Exclusive radiative and electroweak b->d and b->s penguin decays at NLO
M. Beneke, Th. Feldmann, D. Seidel
We provide Standard Model expectations for the rare radiative decays B->K^* gamma, B->rho gamma and B-> omega gamma, and the electroweak penguin decays B->K^* l^+ l^- and B->rho l^…
Two-Loop QCD Corrections to the Heavy Quark Form Factors: Axial Vector Contributions
W. Bernreuther, R. Bonciani, T. Gehrmann +4
We consider the Z Q Qbar vertex to second order in the QCD coupling for an on-shell massive quark-antiquark pair and for arbitrary momentum transfer of the Z boson. We present clos…
Heavy Quarkonium Physics
N. Brambilla, M. Krämer, R. Mussa +82
This report is the result of the collaboration and research effort of the Quarkonium Working Group over the last three years. It provides a comprehensive overview of the state of t…
Comment on ``B->M_1 M_2: Factorization, charming penguins, strong phases, and polarization''
M. Beneke, G. Buchalla, M. Neubert +1
We show that the factorization formula for non-leptonic B decays to two light flavor non-singlet mesons derived by Bauer et al. in the context of soft-collinear effective theory is…
Power corrections to B\to X_u l ν(X_sγ) decay spectra in the "shape-function" region
M. Beneke, F. Campanario, T. Mannel +1
Using soft-collinear effective theory (SCET), we examine the 1/m_b corrections to the factorization formulas for inclusive semi-leptonic B decays in the endpoint region, where the…
Towards pair production near threshold with unstable particle effective theory
M. Beneke, N. Kauer, A. Signer +1
We illustrate the use of effective theory techniques to describe processes involving unstable particles close to resonance. First, we present the main ideas in the context of a sca…