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

The exclusive photoproduction of ϒ(nS) states was calculated in ultraperipheral collisions for coherent and incoherent process in PbPb at sNN=5.5  TeV. Different dipole models were compared in the theoretical framework of light-cone color dipole formalism. Moreover, we calculated the differential cr...

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Bibliographic Details
Published in:Physical review. D 2017-09, Vol.96 (5), Article 054001
Main Authors: Ducati, M. B. Gay, Kopp, F., Machado, M. V. T.
Format: Article
Language:English
Subjects:
Collisions
Cross-sections
Dipoles
Large Hadron Collider
Photoproduction
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Summary:The exclusive photoproduction of ϒ(nS) states was calculated in ultraperipheral collisions for coherent and incoherent process in PbPb at sNN=5.5  TeV. Different dipole models were compared in the theoretical framework of light-cone color dipole formalism. Moreover, we calculated the differential cross section for the Upsilon states and their total cross section for two intervals of rapidity: |y|≤4 4 and 2≤  y≤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.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.96.054001