Dipole subtraction at next-to-leading order in nonrelativistic-QCD factorization

Butenschoen, Mathias; Kniehl, Bernd A.

doi:10.1016/j.nuclphysb.2019.114843

Report/Journal Article

PUBDB-2020-00332

Dipole subtraction at next-to-leading order in nonrelativistic-QCD factorization

Butenschoen, M.Extern* ; Kniehl, B. A. (Corresponding author)Extern*

2020
North-Holland Publ. Co. Amsterdam

Nuclear physics <Amsterdam> / B 950, 114843 - (2020) [10.1016/j.nuclphysb.2019.114843]

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Please use a persistent id in citations: doi:10.1016/j.nuclphysb.2019.114843 doi:10.3204/PUBDB-2020-00332

Report No.: DESY 19-100; DESY-19-100; arXiv:1909.03698

Abstract: 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.

Keyword(s): quarkonium: production ; quarkonium: heavy ; higher-order: 1 ; heavy quark: bound state ; quark: massive ; strong interaction: coupling constant ; dipole ; infrared problem ; quantum chromodynamics: factorization ; quantum chromodynamics: nonrelativistic ; structure

Classification:

ddc:530

Contributing Institute(s):

Uni Hamburg / Theorie (UNI/TH)

Research Program(s):

611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

No specific instrument

Appears in the scientific report 2020

Database coverage:
Medline

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