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Exclusive heavy quark-pair production in ultraperipheral collisions

Pelicer, Mateus Reinke; De Oliveira, Emmanuel Gräve and Pasechnik, Roman LU (2019) In Physical Review D 99(3).
Abstract

In this article, we study the fully differential observables of the exclusive production of heavy (charm and bottom) quark pairs in high-energy ultraperipheral pA and AA collisions. In these processes, the nucleus A serves as an efficient source of the photon flux, while the QCD interaction of the produced heavy-quark pair with the target (p or A) proceeds via an exchange of gluons in a color singlet state, described by the gluon Wigner distribution. The corresponding predictions for differential cross sections were obtained by using the dipole S matrix in the McLerran-Venugopalan saturation model with impact parameter dependence for the nucleus target, and its recent generalization, for the proton target. Prospects of experimental... (More)

In this article, we study the fully differential observables of the exclusive production of heavy (charm and bottom) quark pairs in high-energy ultraperipheral pA and AA collisions. In these processes, the nucleus A serves as an efficient source of the photon flux, while the QCD interaction of the produced heavy-quark pair with the target (p or A) proceeds via an exchange of gluons in a color singlet state, described by the gluon Wigner distribution. The corresponding predictions for differential cross sections were obtained by using the dipole S matrix in the McLerran-Venugopalan saturation model with impact parameter dependence for the nucleus target, and its recent generalization, for the proton target. Prospects of experimental constraints on the gluon Wigner distribution in this class of reactions are discussed.

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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
volume
99
issue
3
publisher
American Physical Society
external identifiers
  • scopus:85062632144
ISSN
2470-0010
DOI
10.1103/PhysRevD.99.034016
language
English
LU publication?
yes
id
cc0600ce-be90-42cd-b843-ec6986e64271
date added to LUP
2019-03-20 10:41:21
date last changed
2019-07-29 23:55:11
@article{cc0600ce-be90-42cd-b843-ec6986e64271,
  abstract     = {<p>In this article, we study the fully differential observables of the exclusive production of heavy (charm and bottom) quark pairs in high-energy ultraperipheral pA and AA collisions. In these processes, the nucleus A serves as an efficient source of the photon flux, while the QCD interaction of the produced heavy-quark pair with the target (p or A) proceeds via an exchange of gluons in a color singlet state, described by the gluon Wigner distribution. The corresponding predictions for differential cross sections were obtained by using the dipole S matrix in the McLerran-Venugopalan saturation model with impact parameter dependence for the nucleus target, and its recent generalization, for the proton target. Prospects of experimental constraints on the gluon Wigner distribution in this class of reactions are discussed.</p>},
  articleno    = {034016},
  author       = {Pelicer, Mateus Reinke and De Oliveira, Emmanuel Gräve and Pasechnik, Roman},
  issn         = {2470-0010},
  language     = {eng},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review D},
  title        = {Exclusive heavy quark-pair production in ultraperipheral collisions},
  url          = {http://dx.doi.org/10.1103/PhysRevD.99.034016},
  volume       = {99},
  year         = {2019},
}