456 citations · 7.3k across the 84 of their papers we have counts for
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hep-ph2001★ 12 cited
Improved Determination of |V_{ub}| from Inclusive Semileptonic B-Meson Decays
Matthias Neubert, Thomas Becher
We reduce the perturbative uncertainty in the determination of |V_{ub}| from inclusive semileptonic B decays by calculating the rate of B -> X_u l nu events with dilepton invariant…
hep-ph2001★ 144 cited
Low energy analysis of pi N --> pi N
T. Becher, H. Leutwyler
We derive a representation for the pion nucleon scattering amplitude that is valid to the fourth order of the chiral expansion. To obtain the correct analytic structure of the sing…
hep-ph2001★ 12 cited
Asymptotics of QCD Factorization in Exclusive Hadronic Decays of B Mesons
Thomas Becher, Matthias Neubert, Ben D. Pecjak
Using the renormalon calculus, we study the asymptotic behavior of the perturbative expansion of the hard-scattering kernels entering the QCD factorization formula for the nonlepto…