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

Gösta Gustafson, Leif Lönnblad, András Ster, Tamás Csörgő

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

219 Nedladdningar (Pure)


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.
TidskriftJournal of High Energy Physics
StatusPublished - 2015

Bibliografisk information

Open Access via SCOAP3

Ämnesklassifikation (UKÄ)

  • Subatomär fysik


Utforska forskningsämnen för ”Total, inelastic and (quasi-)elastic cross sections of high energy pA and γ$^{⋆}$ A reactions with the dipole formalism”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här