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Analysis of Br(B-->X_s gamma) at NNLO with a Cut on Photon Energy
Thomas Becher, Matthias Neubert
By combining a recent estimate of the total B-->X_s gamma branching fraction at O(alpha_s^2) with a detailed analysis of the effects of a cut E_gamma>1.6GeV on photon energy, a pre…
Enhanced Non-local Power Corrections to the B->X_s+gamma Decay Rate
Seung J. Lee, Matthias Neubert, Gil Paz
A new class of enhanced non-perturbative corrections to the inclusive B->X_s+gamma decay rate is identified, which contribute first at order Lambda/m_b in the heavy-quark expansion…
Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering
Thomas Becher, Matthias Neubert, Ben D. Pecjak
Renormalization-group methods in soft-collinear effective theory are used to perform the resummation of large perturbative logarithms for deep-inelastic scattering in the threshold…
Charmless inclusive B decays and the extraction of V(ub)
Gil Paz
This work discusses charmless inclusive B decays and their application to the extraction of . Starting from first principles we relate the differential decay rate to the…
Threshold Resummation in Momentum Space from Effective Field Theory
Thomas Becher, Matthias Neubert
Methods from soft-collinear effective theory are used to perform the threshold resummation of Sudakov logarithms for the deep-inelastic structure function F_2(x,Q^2) in the endpoin…
Toward a NNLO calculation of the B-->X_s+gamma decay rate with a cut on photon energy: II. Two-loop result for the jet function
Thomas Becher, Matthias Neubert
The complete two-loop expression for the jet function J(p^2,mu) of soft-collinear effective theory is presented, including non-logarithmic terms. Combined with our previous calcula…