Nonrelativistic QCD factorization and the velocity dependence of NNLO poles in heavy quarkonium production

Journal Article · Sun Oct 01 00:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.074007· OSTI ID:20871306

Nayak, Gouranga C; Sterman, George ^[1]; Jianwei, Qiu ^[2]

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1. C. N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11794-3840 (United States)
2. Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)

We study the transition of a heavy quark pair from octet to singlet color configurations at next-to-next-to-leading order in heavy quarkonium production. We show that the infrared singularities in this process are consistent with nonrelativistic QCD factorization to all orders in the heavy quark relative velocity v. This factorization requires the gauge-completed matrix elements that we introduced previously to prove next-to-next-to-leading-order factorization to order v{sup 2}.

• OSTI ID: 20871306
• Journal Information: Physical Review. D, Particles Fields, Vol. 74, Issue 7; Other Information: DOI: 10.1103/PhysRevD.74.074007; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
C QUARKS
COLOR MODEL
CONFIGURATION
FACTORIZATION
MATRIX ELEMENTS
QUANTUM CHROMODYNAMICS
QUARKONIUM
SINGULARITY
T QUARKS
VELOCITY