Heavy-quarkonium suppression in p-A collisions from parton energy loss in cold QCD matter
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A bstractThe 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 xF -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.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4873a1efb653afc86bcb801a1a671883abc669f3
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In Nuclear and High Energy Physics
Citations in the corpus
- Study of J/ψ production and cold nuclear matter effects in pPb collisions at $ \sqrt{{{s_{NN }}}} $ = 5 TeV (2013, background): “Reference [4] provides theoretical predictions of a coherent parton energy loss effect both in initial and final states, with or without additional parton shadowing effects parameterised with EPS09.”
- Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions (2015, methodology): “loss q̂ [395, 396] KPS dipole model Dipole absorption σcc̄ [385, 386]”