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Total, inelastic and (quasi-)elastic cross sections of high energy pA and γ$^{⋆}$ A reactions with the dipole formalism

Gustafson, Gösta LU ; Lönnblad, Leif LU ; Ster, András and Csörgő, Tamás (2015) In Journal of High Energy Physics 1510(10). p.022-022
Abstract
In order to understand the initial partonic state in proton-nucleus and electron-nucleus collisions, we investigate the total, inelastic, and (quasi-)elastic cross sections in pA and gamma-A collisions, as these observables are insensitive to possible collective effects in the final state interactions. We used as a tool the DIPSY dipole model, which is based on BFKL dynamics including non-leading effects, saturation, and colour interference, which we have extended to describe collisions of protons and virtual photons with nuclei. We present results for collisions with O, Cu, and Pb nuclei, and reproduce preliminary data on the pPb inelastic cross section at LHC by CMS and LHCb. The large NN cross section results in pA scattering that... (More)
In order to understand the initial partonic state in proton-nucleus and electron-nucleus collisions, we investigate the total, inelastic, and (quasi-)elastic cross sections in pA and gamma-A collisions, as these observables are insensitive to possible collective effects in the final state interactions. We used as a tool the DIPSY dipole model, which is based on BFKL dynamics including non-leading effects, saturation, and colour interference, which we have extended to describe collisions of protons and virtual photons with nuclei. We present results for collisions with O, Cu, and Pb nuclei, and reproduce preliminary data on the pPb inelastic cross section at LHC by CMS and LHCb. The large NN cross section results in pA scattering that scales approximately with the area. The results are compared with conventional Glauber model calculations, and we note that the more subtle dynamical effects are more easily studied in the ratios between the total, inelastic and (quasi-)elastic cross sections. The smaller photon interaction makes the gamma-A collisions more closely proportional to A, and we see here that future electron-ion colliders would be valuable complements to the pA collisions in studies of dynamical effects from correlations, coherence and fluctuations in the initial state in high energy nuclear collisions. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Monte Carlo Simulations, Heavy Ion Phenomenology
in
Journal of High Energy Physics
volume
1510
issue
10
pages
022 - 022
publisher
Springer
external identifiers
  • wos:000362595900001
  • scopus:84943599747
ISSN
1126-6708
DOI
10.1007/JHEP10(2015)022
language
English
LU publication?
yes
id
b2019e19-1ea8-45c1-9570-747b6454745f (old id 8082152)
alternative location
http://dx.doi.org/10.1007/JHEP10(2015)022
date added to LUP
2015-10-23 12:03:44
date last changed
2017-05-21 03:06:02
@article{b2019e19-1ea8-45c1-9570-747b6454745f,
  abstract     = {In order to understand the initial partonic state in proton-nucleus and electron-nucleus collisions, we investigate the total, inelastic, and (quasi-)elastic cross sections in pA and gamma-A collisions, as these observables are insensitive to possible collective effects in the final state interactions. We used as a tool the DIPSY dipole model, which is based on BFKL dynamics including non-leading effects, saturation, and colour interference, which we have extended to describe collisions of protons and virtual photons with nuclei. We present results for collisions with O, Cu, and Pb nuclei, and reproduce preliminary data on the pPb inelastic cross section at LHC by CMS and LHCb. The large NN cross section results in pA scattering that scales approximately with the area. The results are compared with conventional Glauber model calculations, and we note that the more subtle dynamical effects are more easily studied in the ratios between the total, inelastic and (quasi-)elastic cross sections. The smaller photon interaction makes the gamma-A collisions more closely proportional to A, and we see here that future electron-ion colliders would be valuable complements to the pA collisions in studies of dynamical effects from correlations, coherence and fluctuations in the initial state in high energy nuclear collisions.},
  author       = {Gustafson, Gösta and Lönnblad, Leif and Ster, András and Csörgő, Tamás},
  issn         = {1126-6708},
  keyword      = {Monte Carlo Simulations,Heavy Ion Phenomenology},
  language     = {eng},
  number       = {10},
  pages        = {022--022},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Total, inelastic and (quasi-)elastic cross sections of high energy pA and γ$^{⋆}$ A reactions with the dipole formalism},
  url          = {http://dx.doi.org/10.1007/JHEP10(2015)022},
  volume       = {1510},
  year         = {2015},
}