Abstract
This article reports the first measurement of prompt and charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio is measured in collisions at TeV, collected with the LHCb experiment. The states are reconstructed via their decay to a meson, subsequently decaying into a pair of oppositely charged muons, and a photon, which is reconstructed in the calorimeter or via its conversion in the detector material. The cross-section ratio is consistent with unity in the two considered rapidity regions. Comparison with a corresponding cross-section ratio previously measured by the LHCb Collaboration in collisions suggests that and states are similarly affected by nuclear effects occurring in collisions.
- Received 17 March 2021
- Accepted 23 April 2021
DOI:https://doi.org/10.1103/PhysRevC.103.064905
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©2021 CERN, for the LHCb Collaboration