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Indexed by:期刊论文

Date of Publication:2019-01-18

Journal:PHYSICAL REVIEW D

Included Journals:SCIE、Scopus

Volume:99

Issue:1

ISSN No.:2470-0010

Abstract:We calculate the photoproduction of double J/psi (sic) 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/psi photoproduction pp -> p gamma p -> J/psi + J/psi with different forward detector acceptances (xi) are presented. The total cross section of double J/psi photoproduction is less than 200 fb with 0.1 < xi < 0.5, but can reach about 1.37(1.27) pb with 0.0015 < xi < 0.5 (0.0015 < xi < 0.15). The double J/psi 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 sic photoproduction and find that they are, unfortunately, small (with less than 10 fb).