TY - JOUR
T1 - Double quarkonium production at the LHC
AU - Ko, P.
AU - Lee, Jungil
AU - Yu, Chaehyun
N1 - Funding Information:
∗Speaker. †This work was supported by Basic Science Research Program through the NRF of Korea funded by the MEST under Contract 2009-0072689.
Funding Information:
†This work was supported by Basic Science Research Program through the NRF of Korea funded by the MEST under Contract 2009-0072689.
Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2010
Y1 - 2010
N2 - Within the framework of nonrelativistic QCD factorization (NRQCD) approach, we investigate inclusive productions of two spin-triplet S-wave quarkonia at the Large Hadron Collider. The total cross sections for pp → 2J/ψ + X, pp → 2ϒ + X, and pp → J/ψ + ϒ + X integrated over the rapidity range |y| ≤ 2.4 are 35 nb, 49 pb, and 13 pb at the center-of-momentum energy √s = 14 TeV, respectively. We find that the color-singlet channels dominate over the color-octet channels in the pp → 2J/ψ + X and pp → 2ϒ + X processes, while the color-octet channels may be enhanced at large transverse momentum. We find that in the pp → J/ψ + ϒ + X process, the color-singlet channel is much suppressed compared to the color-octet channel at leading order in the strong coupling αs, especially, at large transverse momentum. Therefore, the pp → J/ψ + ϒ + X process may provide a good probe to the color-octet mechanism or give a stringent bound on the color-octet matrix elements.
AB - Within the framework of nonrelativistic QCD factorization (NRQCD) approach, we investigate inclusive productions of two spin-triplet S-wave quarkonia at the Large Hadron Collider. The total cross sections for pp → 2J/ψ + X, pp → 2ϒ + X, and pp → J/ψ + ϒ + X integrated over the rapidity range |y| ≤ 2.4 are 35 nb, 49 pb, and 13 pb at the center-of-momentum energy √s = 14 TeV, respectively. We find that the color-singlet channels dominate over the color-octet channels in the pp → 2J/ψ + X and pp → 2ϒ + X processes, while the color-octet channels may be enhanced at large transverse momentum. We find that in the pp → J/ψ + ϒ + X process, the color-singlet channel is much suppressed compared to the color-octet channel at leading order in the strong coupling αs, especially, at large transverse momentum. Therefore, the pp → J/ψ + ϒ + X process may provide a good probe to the color-octet mechanism or give a stringent bound on the color-octet matrix elements.
UR - http://www.scopus.com/inward/record.url?scp=85053756602&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85053756602
VL - 120
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
T2 - 35th International Conference of High Energy Physics, ICHEP 2010
Y2 - 22 July 2010 through 28 July 2010
ER -