Baryon stopping as a signal of the mixed phase onset

Abstract

It is argued that the experimentally observed baryon stopping indicates a non-monotonous behaviour as a function of the incident energy of colliding nuclei. This can be quantified by a midrapidity reduced curvature of the net-proton rapidity spectrum and reveals itself as a zigzag irregularity in the excitation function of this curvature. The three-fluid dynamic calculations with a hadronic equation of state (EoS) fail to reproduce this irregularity. At the same time, the same calculations with an EoS involving a first-order phase transition and a crossover one into the quark-gluon phase do reproduce this zigzag behaviour, however only qualitatively.

6 pages, 3 figures. To appear in proceedings of the 6th Int. Workshop "CPOD 2010" in Dubna, August 22-28, 2010

References in corpus (12)

• Parton-Hadron-String Dynamics: an off-shell transport approach for relativistic energies
• Dynamical phase trajectories for relativistic nuclear collisions
• Phase transition dynamics for baryon-dense matter
• Hydrodynamics with a chiral hadronic equation of state including quark degrees of freedom
• Lattice QCD Constraints on the Nuclear Equation of State
• Centrality and Energy Dependence of Proton, Light Fragment and Hyperon Production
• Collective Flow in Heavy-Ion Collisions from AGS to SPS
• Three-body collisions in Boltzmann-Uehling-Uhlenbeck theory
• Hydrodynamical description of a hadron-quark first-order phase transition
• Baryon Stopping in Heavy-Ion Collisions at E_{lab}= 2--160 GeV/nucleon
• Transverse-Mass Effective Temperature in Heavy-Ion Collisions from AGS to SPS
• Elliptic Flow and Dissipation in Heavy-Ion Collisions at E_{lab} = (1--160)A GeV

Cited by in corpus (5)

• Alternative Scenarios of Relativistic Heavy-Ion Collisions: I. Baryon Stopping
• Event simulation based on three-fluid hydrodynamics for collisions at energies available at the Dubna Nuclotron-based Ion Collider Facility and at the Facility for Antiproton and Ion Research in Darmstadt
• Baryon Stopping as a Probe of Deconfinement Onset in Relativistic Heavy-Ion Collisions
• Robustness of the Baryon-Stopping Signal for the Onset of Deconfinement in Relativistic Heavy-Ion Collisions
• Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS) for FAIR-NICA-SPS-BES/RHIC energies