Journal
PHYSICS LETTERS B
Volume 726, Issue 4-5, Pages 725-728Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2013.09.036
Keywords
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Funding
- NSFC [11079024]
- MOST [2013CB922000]
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In comparison with J/psi, the excited charmonium state psi' is loosely bounded and its yield is dominantly from the B-hadron decay. Based on the transport approach, we study the double ratio of N(psi')/N(J/psi) from A+A collisions to that from p+p collisions at LHC energy. We found that the primordial production in the initial stage and the regeneration in the hot medium are not significant for psi' production in heavy ion collisions at LHC and the double ratio in semi-central and central collisions is controlled by the B decay. (C) 2013 Elsevier B.V. All rights reserved.
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