Article

J/psi suppression in p-A collisions from parton energy loss in cold QCD matter

04/2012;
Source: arXiv

ABSTRACT The effects of energy loss in cold nuclear matter on J/psi suppression in p-A
collisions are studied. A simple model based on first principles and depending
on a single free parameter is able to reproduce J/psi suppression data at large
xF and at various center-of-mass energies. These results strongly support
energy loss as a dominant effect in quarkonium suppression. They also give some
hint on its hadroproduction mechanism suggesting color neutralization to happen
on long time-scales. Predictions for J/psi and Upsilon suppression in p-Pb
collisions at the LHC are made.

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Keywords

cold nuclear matter
 
dominant effect
 
energy loss
 
first principles
 
hadroproduction mechanism
 
J/psi
 
J/psi suppression
 
LHC
 
reproduce J/psi suppression data
 
simple model
 
single free parameter
 
time-scales
 
Upsilon suppression
 
various center-of-mass energies