Advanced

Accessing the gluon Wigner distribution in ultraperipheral pA collisions

Hagiwara, Yoshikazu; Hatta, Yoshitaka; Pasechnik, Roman LU ; Tasevsky, Marek and Teryaev, Oleg (2017) In Physical Review D - Particles, Fields, Gravitation and Cosmology 96(3).
Abstract

We propose to constrain the gluon Wigner distribution in the nucleon by studying the exclusive diffractive dijet production process in ultraperipheral proton-nucleus collisions (UPCs) at the RHIC and the LHC. Compared to the previous proposal in Ref. [Y. Hatta, B. W. Xiao, and F. Yuan, Phys. Rev. Lett. 116, 202301 (2016).PRLTAO0031-900710.1103/PhysRevLett.116.202301] to study the same observable in lepton-nucleon scattering, the use of UPCs has a few advantages: not only is the cross section larger, but the extraction of the Wigner distribution from the data also becomes simpler, including its elliptic angular dependence. We compute the corresponding cross section and evaluate the coefficients using models which include the gluon... (More)

We propose to constrain the gluon Wigner distribution in the nucleon by studying the exclusive diffractive dijet production process in ultraperipheral proton-nucleus collisions (UPCs) at the RHIC and the LHC. Compared to the previous proposal in Ref. [Y. Hatta, B. W. Xiao, and F. Yuan, Phys. Rev. Lett. 116, 202301 (2016).PRLTAO0031-900710.1103/PhysRevLett.116.202301] to study the same observable in lepton-nucleon scattering, the use of UPCs has a few advantages: not only is the cross section larger, but the extraction of the Wigner distribution from the data also becomes simpler, including its elliptic angular dependence. We compute the corresponding cross section and evaluate the coefficients using models which include the gluon saturation effects. A potential for the measurements of the Wigner distribution at current and future experimental facilities is also discussed.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D - Particles, Fields, Gravitation and Cosmology
volume
96
issue
3
publisher
American Physical Society
external identifiers
  • scopus:85029153831
  • wos:000407442400001
ISSN
2470-0010
DOI
10.1103/PhysRevD.96.034009
language
English
LU publication?
yes
id
a373614c-30e6-4ecd-9df5-4119e8d7bb56
date added to LUP
2017-10-03 09:50:09
date last changed
2018-01-16 13:20:26
@article{a373614c-30e6-4ecd-9df5-4119e8d7bb56,
  abstract     = {<p>We propose to constrain the gluon Wigner distribution in the nucleon by studying the exclusive diffractive dijet production process in ultraperipheral proton-nucleus collisions (UPCs) at the RHIC and the LHC. Compared to the previous proposal in Ref. [Y. Hatta, B. W. Xiao, and F. Yuan, Phys. Rev. Lett. 116, 202301 (2016).PRLTAO0031-900710.1103/PhysRevLett.116.202301] to study the same observable in lepton-nucleon scattering, the use of UPCs has a few advantages: not only is the cross section larger, but the extraction of the Wigner distribution from the data also becomes simpler, including its elliptic angular dependence. We compute the corresponding cross section and evaluate the coefficients using models which include the gluon saturation effects. A potential for the measurements of the Wigner distribution at current and future experimental facilities is also discussed.</p>},
  articleno    = {034009},
  author       = {Hagiwara, Yoshikazu and Hatta, Yoshitaka and Pasechnik, Roman and Tasevsky, Marek and Teryaev, Oleg},
  issn         = {2470-0010},
  language     = {eng},
  month        = {08},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review D - Particles, Fields, Gravitation and Cosmology},
  title        = {Accessing the gluon Wigner distribution in ultraperipheral pA collisions},
  url          = {http://dx.doi.org/10.1103/PhysRevD.96.034009},
  volume       = {96},
  year         = {2017},
}