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Diffractive pQCD mechanism of exclusive production of W+W - pairs in proton-proton collisions

Lebiedowicz, Piotr ; Pasechnik, Roman LU and Szczurek, Antoni (2012) 6th International Conference on Quarks and Nuclear Physics, QNP 2012
Abstract

We present a study of central exclusive production of W+W - pairs in proton-proton collisions at the LHC. We compare the contribution of the γγ → W+W- mechanism with a new mechanism of exclusive diffractive production through the gg → W+W- subprocess with intermediate virtual Higgs boson and quark box diagrams. The amplitude for the latter process is expressed in terms of the off-diagonal unintegrated gluon distribution functions. Several observables related to this process are calculated. The phase space integrated diffractive contribution when separated is only a small fraction of fb compared to 115.4 fb of the γγ-contribution without absorption. This opens a... (More)

We present a study of central exclusive production of W+W - pairs in proton-proton collisions at the LHC. We compare the contribution of the γγ → W+W- mechanism with a new mechanism of exclusive diffractive production through the gg → W+W- subprocess with intermediate virtual Higgs boson and quark box diagrams. The amplitude for the latter process is expressed in terms of the off-diagonal unintegrated gluon distribution functions. Several observables related to this process are calculated. The phase space integrated diffractive contribution when separated is only a small fraction of fb compared to 115.4 fb of the γγ-contribution without absorption. This opens a possibility of efficient searches for anomalous boson γW+W - and γγW+W- couplings due to new physics beyond Standard Model.

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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
host publication
Proceedings of Science
conference name
6th International Conference on Quarks and Nuclear Physics, QNP 2012
conference location
Palaiseau, Paris, France
conference dates
2012-04-16 - 2012-04-20
external identifiers
  • scopus:85087244700
language
English
LU publication?
yes
id
ffe7a9ff-40ae-4ed7-b4ef-d689b12fb1a9
date added to LUP
2016-08-18 20:00:39
date last changed
2022-01-30 05:36:05
@inproceedings{ffe7a9ff-40ae-4ed7-b4ef-d689b12fb1a9,
  abstract     = {{<p>We present a study of central exclusive production of W<sup>+</sup>W <sup>-</sup> pairs in proton-proton collisions at the LHC. We compare the contribution of the γγ → W<sup>+</sup>W<sup>-</sup> mechanism with a new mechanism of exclusive diffractive production through the gg → W<sup>+</sup>W<sup>-</sup> subprocess with intermediate virtual Higgs boson and quark box diagrams. The amplitude for the latter process is expressed in terms of the off-diagonal unintegrated gluon distribution functions. Several observables related to this process are calculated. The phase space integrated diffractive contribution when separated is only a small fraction of fb compared to 115.4 fb of the γγ-contribution without absorption. This opens a possibility of efficient searches for anomalous boson γW<sup>+</sup>W <sup>-</sup> and γγW<sup>+</sup>W<sup>-</sup> couplings due to new physics beyond Standard Model.</p>}},
  author       = {{Lebiedowicz, Piotr and Pasechnik, Roman and Szczurek, Antoni}},
  booktitle    = {{Proceedings of Science}},
  language     = {{eng}},
  title        = {{Diffractive pQCD mechanism of exclusive production of W+W - pairs in proton-proton collisions}},
  year         = {{2012}},
}