Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

8-2017

Journal or Book Title

Nuclear and Particle Physics Proceedings

Volume

289-290

First Page

409

Last Page

413

DOI

10.1016/j.nuclphysbps.2017.05.095

Abstract

We study exclusive charmonium production in diffractive deep inelastic scattering and ultra-peripheral heavy-ion collisions within the dipole picture. The mass spectrum and light-front wavefunctions of charmonium are obtained from the basis light-front quantization approach, using the one-gluon exchange interaction plus a confining potential inspired by light-front holography. We apply these light-front wavefunctions to exclusive charmonium production. The resulting cross sections are in reasonable agreement with electron-proton collision data at HERA and ultra-peripheral nucleus collision measurements at RHIC and LHC. The charmonium cross-section has model dependence on the dipole model. We observe that the cross-section ratio of excited states to the ground state has a weaker dependence than the cross-section itself. We suggest that measurements of excited states of heavy quarkonium production in future electron-ion collision experiments will impose rigorous constraints on heavy quarkonium light-front wave-functions, thus improving our understanding of meson structure, which eventually will help us develop a precise description of the gluon distribution function in the small-x regime.

Comments

This is a manuscript of an article published as Chen, Guangyao, Yang Li, Pieter Maris, Kirill Tuchin, and James P. Vary. "Charmonium spectrum and diffractive production in a light-front Hamiltonian approach." Nuclear and Particle Physics Proceedings 289–290 (2017): 409-413. DOI: 10.1016/j.nuclphysbps.2017.05.095. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier B.V.

Language

en

File Format

application/pdf

Published Version

Included in

Nuclear Commons

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