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arXiv · 1708.08546

Coherent and incoherent Upsilon production in ultraperipheral collisions at the Large Hadron Collider

M. B. Gay Ducati·F. Kopp·M. V. T. Machado
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Abstract

The exclusive photoproduction of $\Upsilon (nS)$ states were calculated in ultra-peripheral collisions for coherent and incoherent process in PbPb at $\sqrt{s_{NN}}$= 5.5 TeV. Different dipole models were compared in the theoretical framework of light-cone color dipole formalism. Moreover, it was calculated the differential cross section for the Upsilon states and their total cross section for two intervals of rapidity: $|y|\leq 4$ 4 and $ 2 \le$ y $\le 4.5$. A systematic study is done on the theoretical uncertainties associated to the production and predictions are presented for the first time for the incoherent cross section of the radially excited states.

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M. B. Gay Ducati, F. Kopp, M. V. T. Machado. 2017-08-28. Coherent and incoherent Upsilon production in ultraperipheral collisions at the Large Hadron Collider. https://doi.org/10.1103/physrevd.96.054001

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