Soft and collinear parton radiation in heavy quark production

Details Soft and collinear parton radiation in heavy quark production Soft and collinear parton radiation in heavy quark production

2002-07-29

arxiv.org/abs/hep-ph/0207332v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at the American Physical Society's 2002 Meeting of The Division of Particles and Fields (Williamsburg, VA, 2002

Scientific paper

When the energy of the heavy quark is comparable with its mass, it is natural to attribute this heavy quark to the hard part of the reaction. At large energies, this approach is impractical due to large logarithms from intensive QCD radiation affecting both inclusive and differential observables. We present a formalism for all-order summation of such logarithms and reliable description of heavy-quark distributions at all energies. As an illustration, we calculate angular distributions of B-mesons produced in neutral-current events at large momentum transfers at the ep collider HERA.

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