Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2011-03-11
Physics
Nuclear Physics
Nuclear Experiment
23 pages, 19 figures, updated text+figures, added comparison to ALICE measurements at 2.76TeV
Scientific paper
We present a study of the inclusive J/psi cross section at 2.76 TeV and 5.5 TeV. The energy dependence of the cross section, rapidity and transverse momentum distributions are evaluated phenomenologically. Their knowledge is crucial as a reference for the interpretation of A-A and p-A J/psi results at the LHC. Our approach is the following: first, we estimate the energy evolution of the pt-integrated J/psi cross section at mid-rapidity; then, we evaluate the rapidity dependence; finally, we study the transverse momentum distribution trend. Whenever possible, both theory driven (based on pQCD predictions) and functional form (data driven fits) calculations are discussed. Our predictions are compared with the recently obtained results by the ALICE collaboration in pp collisions at 2.76 TeV.
Bossú F.
del Valle Zaida Conesa
Falco Alessandro de
Gagliardi M.
Garcia Martinez G.
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