Photoproduction of the double J / ψ ( ϒ ) at the LHC with forward proton tagging

We calculate the photoproduction of double J/ψ(Υ) to leading order based on the nonrelativistic quantum chromodynamics factorization framework at the Large Hadron Collider with forward proton tagging. The numerical results of double J/ψ photoproduction pp → pγp → J/ψ + J/ψ with different forward det...

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Bibliographic Details
Published in:Physical review. D 2019-01, Vol.99 (1), p.014029, Article 014029
Main Authors: Pan, Xue-An, Li, Gang, Song, Mao, Zhang, Yu, Sun, Hao, Guo, Jian-You
Format: Article
Language:English
Subjects:
Large Hadron Collider
Marking
Photoproduction
Quantum chromodynamics
Quantum theory
Quarks
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Summary:We calculate the photoproduction of double J/ψ(Υ) to leading order based on the nonrelativistic quantum chromodynamics factorization framework at the Large Hadron Collider with forward proton tagging. The numerical results of double J/ψ photoproduction pp → pγp → J/ψ + J/ψ with different forward detector acceptances (ξ) are presented. The total cross section of double J/ψ photoproduction is less than 200 fb with 0.1 < ξ < 0.5, but can reach about 1.37(1.27) pb with 0.0015 < ξ < 0.5 (0.0015 < ξ < 0.15). The double J/ψ photoproduction may have the potential to be detected and provide an interesting signature; thus, it is useful for studying the mechanism of heavy quarkonium production. We also predict the double Υ photoproduction and find that they are, unfortunately, small (with less than 10 fb).
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.014029