Holographic J / ψ production near threshold and the proton mass problem

It has been suggested that the production of a heavy quarkonium near threshold in electron-proton scattering can shed light on the origin of the proton mass via the QCD trace anomaly. We study the photoproduction of J/ψ off the proton using gauge/string duality and demonstrate that the t dependence...

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Bibliographic Details
Published in:Physical review. D 2018-10, Vol.98 (7), p.074003, Article 074003
Main Authors: Hatta, Yoshitaka, Yang, Di-Lun
Format: Article
Language:English
Subjects:
Dependence
NUCLEAR PHYSICS AND RADIATION PHYSICS
Photoproduction
Proton scattering
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Summary:It has been suggested that the production of a heavy quarkonium near threshold in electron-proton scattering can shed light on the origin of the proton mass via the QCD trace anomaly. We study the photoproduction of J/ψ off the proton using gauge/string duality and demonstrate that the t dependence of the differential cross section dσ/dt at small t is a sensitive probe of the trace anomaly.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.98.074003