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Gösta Gustafson. Photo.

Gösta Gustafson

Post retirement professor

Gösta Gustafson. Photo.

Collectivity without plasma in hadronic collisions

Author

  • Christian Bierlich
  • Gösta Gustafson
  • Leif Lönnblad

Summary, in English

We present a microscopic model for collective effects in high multiplicity proton–proton collisions, where multiple partonic subcollisions give rise to a dense system of strings. From lattice calculations we know that QCD strings are transversely extended, and we argue that this should result in a transverse pressure and expansion, similar to the flow in a deconfined plasma. The model is implemented in the PYTHIA8 Monte Carlo event generator, and we find that it can qualitatively reproduce the long range azimuthal correlations forming a near-side ridge in high multiplicity proton–proton events at LHC energies.

Department/s

  • Theoretical Particle Physics

Publishing year

2018-04-10

Language

English

Pages

58-63

Publication/Series

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

779

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Keywords

  • Collectivity
  • Confinement
  • Hadronisation
  • Monte Carlo generators
  • Quark–gluon plasma

Status

Published

Project

  • QCD Phenomenology and Event Generator Development
  • Innovative Network for Monte Carlo Event Generators for LHC Physics

ISBN/ISSN/Other

  • ISSN: 0370-2693