System-size and energy dependence of particle momentum spectra: The UrQMD analysis of $p+p$ and Pb + Pb collisions - INSPIRE

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System-size and energy dependence of particle momentum spectra: The UrQMD analysis of $p+p$ and Pb + Pb collisions

V. Yu. Vovchenko
(
- Taras Shevchenko U. and
- Frankfurt U., FIAS and
- Frankfurt U.
)
,
D.V. Anchishkin
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
M.I. Gorenstein
(
- BITP, Kiev and
- Frankfurt U., FIAS
)

Jul 2, 2014

10 pages

Published in:

Phys.Rev.C 90 (2014) 2, 024916

Published: Aug 29, 2014

e-Print:

1407.0629 [nucl-th]

DOI:

10.1103/PhysRevC.90.024916

View in:

reference search19 citations

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Abstract: (APS)

The ultrarelativistic quantum molecular dynamics (UrQMD) transport model is used to study a system-size and energy dependence of the pion production in high energy collisions. New data of the NA61/SHINE Collaboration on spectra of negatively charged pions in proton-proton interactions at Super Proton Synchrotron (SPS) energies are considered. These results are compared with the corresponding data of the NA49 Collaboration in central Pb + Pb collisions at the same collision energies per nucleon. Mean pion multiplicity per participant nucleon, inverse slope parameter of the transverse momentum spectra, and width of rapidity distribution are investigated. A role of isospin effects is discussed. We find that the UrQMD model predicts a nonmonotonous behavior of mean transverse mass with collision energy for positively charged pions at mid-rapidity in inelastic proton-proton interactions. This will be checked soon experimentally by the NA61/SHINE Collaboration.

25.75.Gz
25.75.Ag
24.10.Jv
24.10.Lx
p p: scattering
pi: multiplicity
pi: production
energy: high
transverse momentum: momentum spectrum
quantum molecular dynamics: relativistic

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