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New contributions to central exclusive production of dijets in proton-(anti)proton collisions

Maciula, Rafal; Pasechnik, Roman LU and Szczurek, Antoni (2011) In Physical Review D (Particles, Fields, Gravitation and Cosmology) 84(11).
Abstract
We consider central exclusive production of gg dijets in proton-proton (proton-antiproton) collisions at LHC and Tevatron for different intermediate and final gluon polarizations. The amplitude for the process is derived within the k(perpendicular to)-factorization approach (with both the standard QCD and the Lipatov's effective three-gluon vertices) and is considered in various kinematical asymptotia, in particular, in the important limit of high-p(perpendicular to) jets. Compared to earlier works we include emissions of gluons from different gluonic t-channel lines as well as emission of quark-antiquark dijets. Rapidity distributions, gluon jet p(perpendicular to) distributions and invariant dijet mass distributions are presented. We... (More)
We consider central exclusive production of gg dijets in proton-proton (proton-antiproton) collisions at LHC and Tevatron for different intermediate and final gluon polarizations. The amplitude for the process is derived within the k(perpendicular to)-factorization approach (with both the standard QCD and the Lipatov's effective three-gluon vertices) and is considered in various kinematical asymptotia, in particular, in the important limit of high-p(perpendicular to) jets. Compared to earlier works we include emissions of gluons from different gluonic t-channel lines as well as emission of quark-antiquark dijets. Rapidity distributions, gluon jet p(perpendicular to) distributions and invariant dijet mass distributions are presented. We explore the competition of the standard diagram with both jets emitted from a single t-channel gluon and the one with the emission from both t-channel gluons. The second mechanism requires a special treatment. We propose two different approaches. Including special kinematics and using properties of off-diagonal gluons at small x and xi, we arrive to correlations in two-dimensional distributions in rapidity of one and second jet. We find that the second contribution is much smaller than that known from the literature. The digluon production constitutes an important background to exclusive Higgs production. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D (Particles, Fields, Gravitation and Cosmology)
volume
84
issue
11
publisher
American Physical Society
external identifiers
  • wos:000298131100007
  • scopus:84855266180
ISSN
1550-2368
DOI
10.1103/PhysRevD.84.114014
language
English
LU publication?
yes
id
0fb8d7ef-4fc9-4271-8cdc-4eaeee77a33f (old id 2320262)
date added to LUP
2012-02-06 15:31:58
date last changed
2017-10-01 03:16:52
@article{0fb8d7ef-4fc9-4271-8cdc-4eaeee77a33f,
  abstract     = {We consider central exclusive production of gg dijets in proton-proton (proton-antiproton) collisions at LHC and Tevatron for different intermediate and final gluon polarizations. The amplitude for the process is derived within the k(perpendicular to)-factorization approach (with both the standard QCD and the Lipatov's effective three-gluon vertices) and is considered in various kinematical asymptotia, in particular, in the important limit of high-p(perpendicular to) jets. Compared to earlier works we include emissions of gluons from different gluonic t-channel lines as well as emission of quark-antiquark dijets. Rapidity distributions, gluon jet p(perpendicular to) distributions and invariant dijet mass distributions are presented. We explore the competition of the standard diagram with both jets emitted from a single t-channel gluon and the one with the emission from both t-channel gluons. The second mechanism requires a special treatment. We propose two different approaches. Including special kinematics and using properties of off-diagonal gluons at small x and xi, we arrive to correlations in two-dimensional distributions in rapidity of one and second jet. We find that the second contribution is much smaller than that known from the literature. The digluon production constitutes an important background to exclusive Higgs production.},
  articleno    = {114014},
  author       = {Maciula, Rafal and Pasechnik, Roman and Szczurek, Antoni},
  issn         = {1550-2368},
  language     = {eng},
  number       = {11},
  publisher    = {American Physical Society},
  series       = {Physical Review D (Particles, Fields, Gravitation and Cosmology)},
  title        = {New contributions to central exclusive production of dijets in proton-(anti)proton collisions},
  url          = {http://dx.doi.org/10.1103/PhysRevD.84.114014},
  volume       = {84},
  year         = {2011},
}