Nuclear medium effects on meson production are studied using the binary-collision scaled cross section ratio between events of different charged-particle multiplicities from proton-lead collisions. Data, collected by the CMS experiment in 2016 at a nucleon-nucleon center-of-mass energy of , corresponding to an integrated luminosity of , were used. The scaling factors in the ratio are determined using a novel approach based on the cross sections measured in the same events. The scaled ratio for is consistent with unity for all event multiplicities, putting stringent constraints on nuclear modification for heavy flavor. © 2025 CERN, for the CMS Collaboration2025CERN
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Erratum: Observation of D0 Meson Nuclear Modifications in Au+Au Collisions at sNN=200 GeV [Phys. Rev. Lett. 113 , 142301 (2014)]
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We search for the ( , 1, 2) processes at center-of-mass energies , 10.701, 10.746, and 10.804 GeV. These data were collected with the Belle II detector at the SuperKEKB collider and correspond to 3.5, 1.6, 9.8, and of integrated luminosity, respectively. We set upper limits at the 90% confidence level on the Born cross sections for at each center-of-mass energy near 10.746 GeV. The upper limits at 90% confidence level on the Born cross sections for are significantly smaller than the corresponding measured values for and at .more » « less
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