نتایج جستجو برای: hard scattering

تعداد نتایج: 259147  

Journal: :European Physical Journal C 2023

Abstract We consider the radiation of a soft gluon ( g ) and quark–antiquark $$q{{\bar{q}}}$$ q ¯ pair in QCD hard scattering. In limit scattering amplitude has singular behaviour that is factorized controlled by current, which process-independe...

Journal: :Journal of Physics G: Nuclear and Particle Physics 2000

Journal: :International Journal of Modern Physics: Conference Series 2015

2008
Ahmed Ali Ben D. Pecjak Christoph Greub

We compute NNLO (O(α2 s)) corrections to the hard-scattering kernels entering the QCD factorization formula for B → V γ decays, where V is a light vector meson. We give complete NNLO results for the dipole operators Q7 and Q8, and partial results for Q1 valid in the large-β0 limit and neglecting the NNLO correction from hard spectator scattering. Large perturbative logarithms in the hard-scatte...

Journal: :Nuclear Physics B - Proceedings Supplements 1999

Journal: :Progress in Particle and Nuclear Physics 2008

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