Coherent J/psi production - a novel feature at LHC?

I. C. Arsene; L. Bravina; A. B. Kaidalov; K. Tywoniuk; E. Zabrodin

doi:10.1016/j.physletb.2007.12.055

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arXiv · 0711.4672

Coherent J/psi production - a novel feature at LHC?

I. C. Arsene·L. Bravina·A. B. Kaidalov·K. Tywoniuk·E. Zabrodin

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Abstract

Energy dependence of heavy quarkonia production in hadron-nucleus collisions is studied in the framework of the Glauber-Gribov theory. We emphasize a change in the space-time picture of heavy-quark state production on nuclei with energy. Longitudinally ordered scattering of a heavy-quark system takes place at low energies, while with increasing energy it transforms to a coherent scattering of projectile partons on the nuclear target. The characteristic energy scale for this transition depends on masses and rapidities of produced particles. For J/psi, produced in the central rapidity region, the transition happens at RHIC energies. The parameter-free calculation of J/psi in dAu collisions is in good agreement with recent RHIC data. We use distributions of gluons in nuclei to predict suppression of heavy quarkonia at LHC.

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I. C. Arsene, L. Bravina, A. B. Kaidalov, K. Tywoniuk, E. Zabrodin. 2007-12-19. Coherent J/psi production - a novel feature at LHC?. https://doi.org/10.1016/j.physletb.2007.12.055

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