Higher-order Sudakov resummation in coupled gauge theories
نویسندگان
چکیده
منابع مشابه
Sudakov resummation in QCD
In this PhD thesis, we analyze and generalize the renormalization group approach to the resummation of large logarithms in the perturbative expansion due to soft and collinear multiparton emissions. In particular, we present a generalization of this approach to prompt photon production. It is interesting to see that also with the more intricate two-scale kinematics that characterizes prompt pho...
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We apply Soft-Collinear Effective Theory to prove at leading power in ΛQCD/mb a factorization formula for the radiative leptonic decay B → γlν. Large logarithms entering the hard-scattering kernel are systematically resummed by a two-step perturbative matching procedure.
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We compute the effects of soft-gluon resummation, at the next-to-leading-logarithmic level, in the fixed-target hadroproduction cross section for prompt photons. We find in general that the corrections to the fixed next-to-leading-order results are large for large renormalization scales, and small for small scales. This leads to a significant reduction of the scale dependence of the results for...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2020
ISSN: 1029-8479
DOI: 10.1007/jhep03(2020)182