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Effects of diffraction in pp and pA collisions

Gustafson, Gösta LU (2017) In EPJ Web of Conferences 141.
Abstract

Diffractive excitation is a large fraction of the pp cross section, also at high energies. Diffraction has been described by multi-Regge diagrams, or in the Good-Walker formalism as a result of fluctuations. The two formalisms are, however, just different sides of the same phenomenon. The dipole cascade formalism in impact parameter space is well suited to describe diffractive excitation including effects of saturation. Diffractive excitation is also an important effect in pA scattering, where the Glauber formalism has been used to estimate the number of NN subcollisions and of "wounded" nucleons. Diffractive excitation has here been either neglected or included in a simplified way, not including excitation of target nucleons. In this... (More)

Diffractive excitation is a large fraction of the pp cross section, also at high energies. Diffraction has been described by multi-Regge diagrams, or in the Good-Walker formalism as a result of fluctuations. The two formalisms are, however, just different sides of the same phenomenon. The dipole cascade formalism in impact parameter space is well suited to describe diffractive excitation including effects of saturation. Diffractive excitation is also an important effect in pA scattering, where the Glauber formalism has been used to estimate the number of NN subcollisions and of "wounded" nucleons. Diffractive excitation has here been either neglected or included in a simplified way, not including excitation of target nucleons. In this talk we discuss how these effects can be included with the help of the dipole cascade model DIPSY.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
EPJ Web of Conferences
volume
141
external identifiers
  • scopus:85018736115
ISSN
2101-6275
DOI
10.1051/epjconf/201714103004
language
English
LU publication?
yes
id
27095501-5121-41db-b46d-c19148f6f416
date added to LUP
2017-05-24 10:53:32
date last changed
2017-05-24 10:53:32
@article{27095501-5121-41db-b46d-c19148f6f416,
  abstract     = {<p>Diffractive excitation is a large fraction of the pp cross section, also at high energies. Diffraction has been described by multi-Regge diagrams, or in the Good-Walker formalism as a result of fluctuations. The two formalisms are, however, just different sides of the same phenomenon. The dipole cascade formalism in impact parameter space is well suited to describe diffractive excitation including effects of saturation. Diffractive excitation is also an important effect in pA scattering, where the Glauber formalism has been used to estimate the number of NN subcollisions and of "wounded" nucleons. Diffractive excitation has here been either neglected or included in a simplified way, not including excitation of target nucleons. In this talk we discuss how these effects can be included with the help of the dipole cascade model DIPSY.</p>},
  articleno    = {03004},
  author       = {Gustafson, Gösta},
  issn         = {2101-6275},
  language     = {eng},
  month        = {04},
  series       = {EPJ Web of Conferences},
  title        = {Effects of diffraction in pp and pA collisions},
  url          = {http://dx.doi.org/10.1051/epjconf/201714103004},
  volume       = {141},
  year         = {2017},
}