Polarization for Prompt J/ψ and ψ(2s) Production at the Tevatron and LHC
May, 2012
5 pages
Published in:
- Phys.Rev.Lett. 110 (2013) 4, 042002
- Published: Jan 25, 2013
e-Print:
- 1205.6682 [hep-ph]
View in:
Citations per year
Abstract: (APS)
With nonrelativistic QCD factorization, we present the first complete next-to-leading order study on the polarization of prompt J/ψ hadroproduction by including feeddown from χc(PJ13,S183) and ψ(2s) which turn out to be very important parts. By using the color-octet long-distance matrix elements obtained from a combined fit of the measurements at the Tevatron and LHC for J/ψ, ψ(2s) and χc, the prompt J/ψ polarization predictions are presented, and the results are in agreement with the CDF run I data (except two points), but in conflict with the CDF run II data, while they are close to the ALICE data (inclusive J/ψ). The measurements at the LHC are expected to clarify the situation.Note:
- 4 pages, 4 figures, published at PRL
- 13.88.+e
- 13.60.Le
- 14.40.Pq
- 12.38.Bx
- J/psi(3100): polarization: calculated
- J/psi(3100): direct production
- differential cross section
- quantum chromodynamics: nonrelativistic
- higher-order: 1
- CERN LHC Coll
References(0)
Figures(20)
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