skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Mean transverse momenta correlations in hadron-hadron collisions in MC toy model with repulsing strings

Abstract

In the present work, Monte-Carlo toy model with repulsing quark-gluon strings in hadron-hadron collisions is described. String repulsion creates transverse boosts for the string decay products, giving modifications of observables. As an example, long-range correlations between mean transverse momenta of particles in two observation windows are studied in MC toy simulation of the heavy-ion collisions.

Authors:
 [1]
  1. St. Petersburg State University (Russian Federation)
Publication Date:
OSTI Identifier:
22499095
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1701; Journal Issue: 1; Conference: 11. conference on quark confinement and hadron spectrum, Saint Petersburg (Russian Federation), 8-12 Sep 2014; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CORRELATIONS; DAUGHTER PRODUCTS; GLUONS; HADRON-HADRON INTERACTIONS; HEAVY ION REACTIONS; MONTE CARLO METHOD; QUARK-GLUON INTERACTIONS; QUARKS; TRANSVERSE MOMENTUM

Citation Formats

Altsybeev, Igor. Mean transverse momenta correlations in hadron-hadron collisions in MC toy model with repulsing strings. United States: N. p., 2016. Web. doi:10.1063/1.4938711.
Altsybeev, Igor. Mean transverse momenta correlations in hadron-hadron collisions in MC toy model with repulsing strings. United States. doi:10.1063/1.4938711.
Altsybeev, Igor. 2016. "Mean transverse momenta correlations in hadron-hadron collisions in MC toy model with repulsing strings". United States. doi:10.1063/1.4938711.
@article{osti_22499095,
title = {Mean transverse momenta correlations in hadron-hadron collisions in MC toy model with repulsing strings},
author = {Altsybeev, Igor},
abstractNote = {In the present work, Monte-Carlo toy model with repulsing quark-gluon strings in hadron-hadron collisions is described. String repulsion creates transverse boosts for the string decay products, giving modifications of observables. As an example, long-range correlations between mean transverse momenta of particles in two observation windows are studied in MC toy simulation of the heavy-ion collisions.},
doi = {10.1063/1.4938711},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1701,
place = {United States},
year = 2016,
month = 1
}
  • A model of deflagration with the emission of free pions directly from the timelike hypersurface corresponding to the passage of the front of a decompression shock wave is proposed and physically justified. It is shown that in such an approach the velocities of the front and of the collective flux of the emitted pions are greater than those in the standard model, and the appearance of exotic regimes of burning is possible. In the study of the transverse-momentum spectra of the pions in ultrarelativistic collisions of nuclei attention is concentrated on the range 0.2{lt}{ital p}{sub {perpendicular}} {lt}1 GeV/{ital c}, inmore » which there is a strong and experimentally detectable difference in the behavior of the spectra in the case when hydrodynamic fluxes are present in the mixed phase and in the case when they are absent.« less
  • Correlations between the tranverse momenta of secondary hadrons in terms of azimuthal asymmetry and the compensating momentum are investigated. The experimental data are compared in detail with the predictions of the Lund fragmentation model. Evidence of strong kinematic correlations between the leading proton and antiproton is obtained. The influence of baryon and meson resonances on the asymmetry of the azimuthal distributions is studied.
  • We report the transverse momentum (p{sub T}) distributions for identified charged pions, protons and anti-protons using events triggered by high deposit energy in the Barrel Electro-Magnetic Calorimeter (BEMC) from p+p collisions at {radical}s{sub NN} = 200 GeV. The spectra are measured around mid-rapidity (|y| < 0.5) over the range of 3 < p{sub T} < 15 GeV/c with particle identification (PID) by the relativistic ionization energy loss (rdE/dx) in the Time Projection Chamber (TPC) of the Solenoidal Tracker at RHIC (STAR). The charged pion, proton and anti-proton spectra at high p{sub T} are compared with published results from minimum biasmore » triggered events and the Next-Leading-Order perturbative quantum chromodynamic (NLO pQCD) calculations (DSS, KKP and AKK 2008). In addition, we present the particle ratios of n{sup -}/n{sup +}, {bar p}/p, p/n{sup +} and {bar p}/{pi}{sup -} in p+p collisions.« less
  • We report transverse momentum (pT≤15 GeV/c) spectra of π ±, K ±, p, p̄, K 0 S, and ρ⁰ at midrapidity in p+p and Au+Au collisions at √( sNN)=200 GeV. Perturbative QCD calculations are consistent with π± spectra in p+p collisions but do not reproduce K and p(p̄) spectra. The observed decreasing antiparticle-to-particle ratios with increasing pT provide experimental evidence for varying quark and gluon jet contributions to high-pT hadron yields. The relative hadron abundances in Au+Au at pT ≳ 8 GeV/c are measured to be similar to the p+p results, despite the expected Casimir effect for parton energy loss.
  • No abstract prepared.