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Diffractive W-+/- production at hadron colliders as a test of color singlet exchange mechanisms

Ingelman, Gunnar ; Pasechnik, Roman LU ; Rathsman, Johan LU and Werder, Dominik (2013) In Physical Review D (Particles, Fields, Gravitation and Cosmology) 87(9).
Abstract
We revisit diffractive and exclusive (WX)-X-+/- production at hadron colliders in different models for soft color exchanges. The process pp -> p[(WX)-X-+/-]p, and in particular a W-+/- charge asymmetry, has been suggested as a way to discriminate diffractive processes as being due to pomeron exchange in Regge phenomenology or QCD-based color reconnection models. Our detailed analysis of the latter models at LHC energies shows, however, that they give similar results as pomeron models for leading protons and central (WX)-X-+/- production, including a vanishing W-+/- charge asymmetry. We demonstrate that soft color exchange models provide a continuous transition from diffractive to inelastic processes and thereby include the intrinsic... (More)
We revisit diffractive and exclusive (WX)-X-+/- production at hadron colliders in different models for soft color exchanges. The process pp -> p[(WX)-X-+/-]p, and in particular a W-+/- charge asymmetry, has been suggested as a way to discriminate diffractive processes as being due to pomeron exchange in Regge phenomenology or QCD-based color reconnection models. Our detailed analysis of the latter models at LHC energies shows, however, that they give similar results as pomeron models for leading protons and central (WX)-X-+/- production, including a vanishing W-+/- charge asymmetry. We demonstrate that soft color exchange models provide a continuous transition from diffractive to inelastic processes and thereby include the intrinsic asymmetry of inelastic interactions while being at the same time sensitive to the underlying hadronization models. Such sensitivity also concerns the differential distributions in proton momentum and W-+/- transverse momentum, which opens possibilities to discriminate between different color reconnection models. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D (Particles, Fields, Gravitation and Cosmology)
volume
87
issue
9
article number
094017
publisher
American Physical Society
external identifiers
  • wos:000319126500001
  • scopus:84877983035
ISSN
1550-2368
DOI
10.1103/PhysRevD.87.094017
language
English
LU publication?
yes
id
f958b016-d623-477f-ba37-4969e7e04d2c (old id 3932534)
date added to LUP
2016-04-01 10:26:10
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2020-01-12 03:40:34
@article{f958b016-d623-477f-ba37-4969e7e04d2c,
  abstract     = {We revisit diffractive and exclusive (WX)-X-+/- production at hadron colliders in different models for soft color exchanges. The process pp -> p[(WX)-X-+/-]p, and in particular a W-+/- charge asymmetry, has been suggested as a way to discriminate diffractive processes as being due to pomeron exchange in Regge phenomenology or QCD-based color reconnection models. Our detailed analysis of the latter models at LHC energies shows, however, that they give similar results as pomeron models for leading protons and central (WX)-X-+/- production, including a vanishing W-+/- charge asymmetry. We demonstrate that soft color exchange models provide a continuous transition from diffractive to inelastic processes and thereby include the intrinsic asymmetry of inelastic interactions while being at the same time sensitive to the underlying hadronization models. Such sensitivity also concerns the differential distributions in proton momentum and W-+/- transverse momentum, which opens possibilities to discriminate between different color reconnection models.},
  author       = {Ingelman, Gunnar and Pasechnik, Roman and Rathsman, Johan and Werder, Dominik},
  issn         = {1550-2368},
  language     = {eng},
  number       = {9},
  publisher    = {American Physical Society},
  series       = {Physical Review D (Particles, Fields, Gravitation and Cosmology)},
  title        = {Diffractive W-+/- production at hadron colliders as a test of color singlet exchange mechanisms},
  url          = {http://dx.doi.org/10.1103/PhysRevD.87.094017},
  doi          = {10.1103/PhysRevD.87.094017},
  volume       = {87},
  year         = {2013},
}