2012/11/20 by E. G. Ferreiro, F. Fleuret, Jean-Philippe Lansberg +2
Physics and Astronomy · #Deuterium #Gluon #High energy #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear matter #Nuclear physics #Nucleon #Nucleus #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Proton #Quantum Chromodynamics and Particle Interactions #Quark #hep-ph
paper · pdf · doi:10.1088/1742-6596/422/1/012018
4 pages, 2 tables, 2 figures, contribution to Rencontres du Vietnam, 'Heavy Ion Collisions in the LHC Era', 15-21 July 2012, Quy Nhon, Vietnam
arxiv created 2012/11/20 · openalex publication_date 2013/03/28 · arxiv updated 2015/06/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We study the impact of different cold nuclear matter effects both on J/ψ and ψ ' production, among them the modification of the gluon distribution in bound nucleons, commonly known as gluon shadowing , and the survival probability for a bound state to escape the nucleus - the nuclear absorption. Less conventional effects such as saturation and fractional energy loss are also discussed. We pay a particular attention to the recent PHENIX preliminary data on ψ' production in d Au collisions at = 200 GeV, which show a strong suppression for central collisions, 5 times larger than the one obtained for J/ψ production at the same energy. We conclude that none of the abovementioned mechanisms can explain this experimental result.