Abstract
The effects of parton energy loss in cold nuclear matter on heavy-quarkonium suppression in p-A collisions are studied. It is shown from first principles that at large quarkonium energy E and small production angle in the nucleus rest frame, the medium-induced energy loss scales as E. Using this result, a phenomenological model depending on a single free parameter is able to reproduce J/ψ and Υ suppression data in a broad x F -range and at various center-of-mass energies. These results strongly support energy loss as the dominant effect in heavy-quarkonium suppression in p-A collisions. Predictions for J/ψ and Υ suppression in p-Pb collisions at the LHC are made. It is argued that parton energy loss scaling as E should generally apply to hadron production in p-A collisions, such as light hadron or open charm production.
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Arleo, F., Peigné, S. Heavy-quarkonium suppression in p-A collisions from parton energy loss in cold QCD matter. J. High Energ. Phys. 2013, 122 (2013). https://doi.org/10.1007/JHEP03(2013)122
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DOI: https://doi.org/10.1007/JHEP03(2013)122