Abstract
Suppression of the nuclear-modification factor has been seen as a trademark signature of final-state effects in large collision systems for decades. In small systems, the nuclear modification was attributed to cold-nuclear-matter effects until the observation of strong differential suppression of the state in and collisions suggested the presence of final-state effects. Results of and measurements in the dimuon decay channel are presented here for , , and collision systems at . The results are predominantly shown in the form of the nuclear-modification factor, , the ratio of the invariant yield per nucleon-nucleon collision in collisions of proton on target nucleus to that in collisions. Measurements of the and nuclear-modification factor are compared with shadowing and transport-model predictions, as well as to complementary measurements at Large Hadron Collider energies.
2 More- Received 9 February 2022
- Accepted 10 May 2022
DOI:https://doi.org/10.1103/PhysRevC.105.064912
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