Rapidity distributions of pions in p+p and Pb+Pb collisions at energies available at the CERN Super Proton Synchrotron

Andrzej Rybicki, Antoni Szczurek, Mirosław Kiełbowicz, Antoni Marcinek, Vitalii Ozvenchuk, and Łukasz Rozpłochowski
Phys. Rev. C 99, 024908 – Published 11 February 2019

Abstract

The centrality dependence of rapidity distributions of pions in Pb+Pb reactions can be understood by imposing local energy-momentum conservation in the longitudinal “fire streaks” of excited matter. With no tuning nor adjustment to the experimental data, the rapidity distribution of pions produced by the fire streak which we obtained from Pb+Pb collisions reproduces the shape of the experimental pion rapidity distribution in p+p interactions, measured by the NA49 Collaboration at the same energy. The observed difference in the absolute normalization of this distribution can be explained by the difference in the overall energy balance, induced by baryon stopping and strangeness enhancement phenomena occurring in heavy ion collisions. We estimate such effects using a collection of Super Proton Synchrotron experimental data on π±, K±, net p, and n production in p+p and Pb+Pb reactions. Implications of the above findings are discussed.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 11 May 2018
  • Revised 28 December 2018

DOI:https://doi.org/10.1103/PhysRevC.99.024908

©2019 American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsNuclear Physics

Authors & Affiliations

Andrzej Rybicki1, Antoni Szczurek1,2, Mirosław Kiełbowicz1, Antoni Marcinek1, Vitalii Ozvenchuk1, and Łukasz Rozpłochowski3

  • 1H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland
  • 2University of Rzeszów, Rejtana 16, 35-959 Rzeszów, Poland
  • 3Jagiellonian University, Kraków, Poland

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 99, Iss. 2 — February 2019

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×