Abstract
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.
| Original language | English |
|---|---|
| Journal | Proceedings of Science |
| Volume | 120 |
| Publication status | Published - 2010 Jan 1 |
| Event | 35th International Conference of High Energy Physics, ICHEP 2010 - Paris, France Duration: 2010 Jul 22 → 2010 Jul 28 |
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Cite this
Double quarkonium production at the LHC. / Ko, P.; Lee, Jungil; Yu, Chaehyun.
In: Proceedings of Science, Vol. 120, 01.01.2010.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Double quarkonium production at the LHC
AU - Ko, P.
AU - Lee, Jungil
AU - Yu, Chaehyun
PY - 2010/1/1
Y1 - 2010/1/1
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.
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M3 - Conference article
VL - 120
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
ER -