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Fluctuations, saturation, and diffractive excitation in high energy collisions

Flensburg, Christoffer LU and Gustafson, Gösta LU (2010) In Journal of High Energy Physics
Abstract
Diffractive excitation is usually described by the Good-Walker formalism for low masses, and by the triple-Regge formalism for high masses. In the Good-Walker formalism the cross section is determined by the fluctuations in the interaction. In this paper we show that by taking the fluctuations in the BFKL ladder into account, it is possible to describe both low and high mass excitation by the Good-Walker mechanism. In high energy pp collisions the fluctuations are strongly suppressed by saturation, which implies that pomeron exchange does not factorise between DIS and pp collisions. The Dipole Cascade Model reproduces the expected triple-Regge form for the bare pomeron, and the triple-pomeron coupling is estimated.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
QCD Phenomenology, Phenomenological Models
in
Journal of High Energy Physics
issue
10
publisher
Springer
external identifiers
  • wos:000284146800014
  • scopus:78649707678
ISSN
1126-6708
DOI
10.1007/JHEP10(2010)014
language
English
LU publication?
yes
id
0728da4a-0b8a-4c51-9e69-24ed00c1cecf (old id 1772971)
date added to LUP
2011-02-02 21:15:34
date last changed
2018-06-24 03:16:30
@article{0728da4a-0b8a-4c51-9e69-24ed00c1cecf,
  abstract     = {Diffractive excitation is usually described by the Good-Walker formalism for low masses, and by the triple-Regge formalism for high masses. In the Good-Walker formalism the cross section is determined by the fluctuations in the interaction. In this paper we show that by taking the fluctuations in the BFKL ladder into account, it is possible to describe both low and high mass excitation by the Good-Walker mechanism. In high energy pp collisions the fluctuations are strongly suppressed by saturation, which implies that pomeron exchange does not factorise between DIS and pp collisions. The Dipole Cascade Model reproduces the expected triple-Regge form for the bare pomeron, and the triple-pomeron coupling is estimated.},
  author       = {Flensburg, Christoffer and Gustafson, Gösta},
  issn         = {1126-6708},
  keyword      = {QCD Phenomenology,Phenomenological Models},
  language     = {eng},
  number       = {10},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Fluctuations, saturation, and diffractive excitation in high energy collisions},
  url          = {http://dx.doi.org/10.1007/JHEP10(2010)014},
  year         = {2010},
}