Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP05(2015)103
Keywords
NLO Computations; Hadronic Colliders
Categories
Funding
- National Natural Science Foundation of China [11075002, 11021092, 11475005]
- National Key Basic Research Program of China [2015CB856700]
- U.S. Department of Energy [DE-AC02-98CH10886]
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We give predictions of J/psi and psi(2S) yields and polarizations in prompt production at hadron colliders based on non-relativistic QCD factorization formula. We calculate short-distance coefficients of all important color-octet intermediate channels as well as color-singlet channels up to O(alpha(4)(S)), i.e. next-to-leading order in alpha(S). For prompt J/psi production, we also take into account feeddown contributions from chi(cJ)(J=0,1,2) and psi(2S) decays. Color-singlet long-distance matrix elements (LDMEs) are estimated by using potential model, and color-octet LDMEs are extracted by fitting the Tevatron yield data only. The predictions are satisfactory for both yields and polarizations of prompt J/psi and prompt psi(2S) production at the Tevatron and the LHC. In particular, we find our predictions for polarizations of prompt J/psi production have only a little difference from our previous predictions for polarizations of direct J/psi production.
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