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Related Experiment Videos

Ion-induced quark-gluon implosion.

L Frankfurt1, M Strikman

  • 1School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel.

Physical Review Letters
|August 9, 2003
PubMed
Summary
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Nuclear fragmentation at the Large Hadron Collider (LHC) involves nucleons shedding soft partons. This leads to leading quarks and gluons fragmenting into an implosion of nuclear constituents.

Area of Science:

  • High-energy nuclear physics
  • Particle physics
  • Quantum chromodynamics

Background:

  • Understanding nuclear fragmentation is crucial for comprehending particle interactions at extreme energies.
  • Proton-nucleus and nucleus-nucleus collisions at the CERN Large Hadron Collider (LHC) provide a unique environment to study these phenomena.

Purpose of the Study:

  • To investigate the mechanism of nuclear fragmentation in high-energy collisions.
  • To model the behavior of nucleons and their constituents during fragmentation.

Main Methods:

  • Utilizing a semiclassical approximation to analyze collision dynamics.
  • Examining the role of soft and hard interactions and parton stripping.

Main Results:

Related Experiment Videos

  • Nucleons fragment into leading quarks and gluons with high transverse momentum (p(t)).
  • Valence quarks and gluons exhibit opposing momentum flows in the center-of-mass frame.
  • The fragmentation process results in an implosion of quark and gluon constituents.

    • Conclusions:

    • Initial state densities in the fragmentation region are estimated to be >/=50 GeV/fm(3) at LHC energies.
    • Similar densities are predicted to be >/=10 GeV/fm(3) at Brookhaven National Laboratory's Relativistic Heavy Ion Collider (RHIC).
    • The study provides insights into the non-equilibrium state formed during nuclear fragmentation.