Collectivity without plasma in hadronic collisions

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)58-63
    Number of pages6
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Volume779
    DOIs
    Publication statusPublished - 2018 Apr 10

    Subject classification (UKÄ)

    • Subatomic Physics

    Free keywords

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

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