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The first measurement of J/ψ and D0 production in PbNe collisions by the LHCb experiment in its fixed-target configuration is reported. The production of J/ψ and D0 mesons is studied with a beam of lead ions with an energy of 2.5 TeV per nucleon colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy of √sNN=68.5 GeV. The J/ψ/D0 production cross-section ratio is studied as a function of rapidity, transverse momentum and collision centrality. These data are compared with measurements from pNe collisions at the same energy and show no difference in the observed J/ψ suppression trend when comparing pNe and PbNe peripheral collisions with PbNe central collisions.
Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk
Jan Steggemann, Konstantin Androsov, Anna Mascellani
Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Michel De Cian, Federico Leo Redi, Donal Patrick Hill, Vladimir Macko, Minh Tâm Tran, Tara Nanut, Marie Theres Christin Bachmayer, Maria Vieites Diaz, Sebastian Schulte, Guillaume Max Pietrzyk, Veronica Sølund Kirsebom, Renato Quagliani, Lino Ferreira Lopes, Surapat Ek-In, Sonia Amina Bouchiba, Serhii Cholak, Thi Dung Nguyen, Alison Maria Tully, Mâu Chung Nguyên, Sara Celani, Carina Trippl, Maarten Willibrord Uriël Van Dijk, Ettore Zaffaroni, Matthieu Philippe Luther Marinangeli, Ana Bárbara Rodrigues Cavalcante