Probes of the small x gluon via exclusive J/psi and Upsilon

Abstract

New, more precise data on diffractive J/psi photoproduction and on exclusive J/psi production in the process pp -> p + J/psi + p at the LHC allow a better constraint on the low-x gluon distribution in the domain of relatively low scales Q^2 ~ 2-6 GeV^2. We account for the `skewed' effect and for the real part of the amplitude, as well as for the absorptive corrections in the case of the exclusive process pp -> p + J/psi + p. The predictions for exclusive J/psi production at \sqrt{s}=8 and 14 TeV and for exclusive Upsilon(1S) production at 7, 8 and 14 TeV are also given. We present results at leading and next-to-leading order.

17 pages, 7 figures, 3 tables

References in corpus (4)

• New parton distributions for collider physics
• Exclusive $J/\psi$ and $\psi (2S)$ production in $pp$ collisions at $\sqrt{s}=7$ TeV
• Exclusive photoproduction of $J/\psi$ in proton-proton and proton-antiproton scattering
• Diffraction at the LHC

Cited by in corpus (19)

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• The PDF4LHC report on PDFs and LHC data: Results from Run I and preparation for Run II
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• Heavy ions at the Future Circular Collider
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• Central Exclusive Production at LHCb
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• Search for Vector-mediated Dark Matter at the LHC with Forward Proton Tagging
• Vector meson production at the LHC
• Photon-hadron and photon-photon collisions in ALICE
• The reggeometric pomeron and exclusive production of $J/\psi$ and $\psi (2S)$ in ultraperipheral collisions at the LHC
• Measurements of soft QCD and double parton scattering at LHCb