{{J}/psi } and {{D}} ^0 production in sqrt{s_{scriptscriptstyle text {NN}}} =68.5,text {GeV} PbNe collisions

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doi:10.1140/epjc/s10052-023-11674-w

Abstract

The first measurement of {{J}/psi } and {{D}} ^0 production in PbNe collisions by the LHCb experiment in its fixed-target configuration is reported. The production of {{J}/psi } and {{D}} ^0 mesons is studied with a beam of lead ions with an energy of 2.5,text {TeV} per nucleon colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy of sqrt{s_{scriptscriptstyle text {NN}}} =68.5,text {GeV} . The {{J}/psi }/{{D}} ^0 production cross-section ratio is studied as a function of rapidity, transverse momentum and collision centrality. These data are compared with measurements from ptext {Ne} collisions at the same energy and show no difference in the observed {{J}/psi } suppression trend when comparing ptext {Ne} and PbNe peripheral collisions with PbNe central collisions.

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