Exclusive and dissociative J/ψ photoproduction, and exclusive dimuon production, in p-Pb collisions at √sNN=8.16 TeV

作者：Acharya, S.; Adamova, D.; Adler, A.; Rinella, G. Aglieri; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akindinov, A.; Al-Turany, M.; Aleksandrov, D.; Alessandro, B.; Alfanda, H. M.; Molina, R. Alfaro; Ali, B.; Alici, A.; Alizadehvandchali, N.; Alkin, A.; Alme, J.; Alocco, G.; Alt, T.; Altsybeev, I.; Anaam, M. N.; Andrei, C.; Andronic, A.; Anguelov, V.; Antinori, F.; Antonioli, P.; Apadula, N.; Aphecetche, L.; Appelshaeuser, H.; Arata, C.; Arcelli, S.; Aresti, M.

来源：Physical Review D, 2023, 108(11): 112004.

DOI：10.1103/PhysRevD.108.112004

• PROTON-PROTON COLLISIONS
• ENERGY-DEPENDENCE
• GAMMA-GAMMA
• MESONS
• SCATTERING
• E(+)E(-)

The ALICE Collaboration reports three measurements in ultraperipheral proton-lead collisions at forward rapidity. The exclusive two-photon process gamma gamma ->mu(+)mu(-) and the exclusive photoproduction of J/psi are studied. J/psi photoproduction with proton dissociation is measured for the first time at a hadron collider. The cross section for the two-photon process of dimuons in the invariant mass range from 1 to 2.5 GeV/c(2) agrees with leading-order quantum electrodynamics calculations. The exclusive and dissociative cross sections for J/psi photoproductions are measured for photon-proton center-of-mass energies from 27 to 57 GeV. They are in good agreement with HERA results.