Dipole subtraction at next-to-leading order in nonrelativistic-QCD factorization
Copyright policy )Dipole subtraction at next-to-leading order in nonrelativistic-QCD factorization
We describe an implementation of a subtraction scheme in the nonrelativistic-QCD treatment of heavy-quarkonium production at next-to-leading-order in the strong-coupling constant, covering $S$- and $P$-wave bound states. It is based on the dipole subtraction in the massless version by Catani and Seymour and its extension to massive quarks by Phaf and Weinzierl. Important additions include the treatment of heavy-quark bound states, in particular due to the more complicated infrared-divergence structure in the case of $P$-wave states.
29 pages, 2 figures, 3 tables, 3 formulas added, corrections and minor changes included, accepted for publication in Nucl. Phys. B
- Universität Hamburg Germany
- Helmholtz Association of German Research Centres Germany
- Deutsches Elektronen-Synchrotron DESY Germany
quantum chromodynamics: nonrelativistic, quark: massive, higher-order: 1, Nuclear physics, FOS: Physical sciences, quarkonium: production, QC770-798, Strong interaction, including quantum chromodynamics, Perturbative methods of renormalization applied to problems in quantum field theory, High Energy Physics - Phenomenology, quarkonium: heavy, High Energy Physics - Phenomenology (hep-ph), strong interaction: coupling constant, Nuclear and particle physics. Atomic energy. Radioactivity, quantum chromodynamics: factorization, structure, info:eu-repo/classification/ddc/530, heavy quark: bound state, dipole, infrared problem
quantum chromodynamics: nonrelativistic, quark: massive, higher-order: 1, Nuclear physics, FOS: Physical sciences, quarkonium: production, QC770-798, Strong interaction, including quantum chromodynamics, Perturbative methods of renormalization applied to problems in quantum field theory, High Energy Physics - Phenomenology, quarkonium: heavy, High Energy Physics - Phenomenology (hep-ph), strong interaction: coupling constant, Nuclear and particle physics. Atomic energy. Radioactivity, quantum chromodynamics: factorization, structure, info:eu-repo/classification/ddc/530, heavy quark: bound state, dipole, infrared problem
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