Longitudinal dynamics and particle production in relativistic nuclear collisions - INSPIRE

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Longitudinal dynamics and particle production in relativistic nuclear collisions

Chun Shen
(
- Wayne State U. and
- RIKEN BNL
)
,
Björn Schenke
(
- Brookhaven
)

Mar 9, 2022

19 pages

Published in:

Phys.Rev.C 105 (2022) 6, 064905,
Phys.Rev.C 105 (2022) 6, 064905

Published: Jun 8, 2022

e-Print:

2203.04685 [nucl-th]

DOI:

10.1103/PhysRevC.105.064905 (publication)

View in:

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Abstract: (APS)

This work presents a three-dimensional dynamical initialization model for relativistic heavy-ion collisions, implementing local energy-momentum conservation and baryon charge fluctuations at string junctions. Constraining parameters using experimental data from

p + p

collisions at various collision energies, the model provides a very good description of the charged hadron and net proton rapidity distributions in

Au + Au

collisions from 7.7 to 200 GeV and

Pb + Pb

collisions at 8.77 and 17.3 GeV. We demonstrate the importance of fluctuations of baryon densities to string junctions for describing net-proton distributions at collision energies of 62.4 and 200 GeV. Including this improved baryon stopping description along with the requirement of strangeness neutrality also yields a good description of identified particle yields as functions of the collision energy above 7.7 GeV. We further study asymmetric

p + Al

and

(p, d, {}^{3}{He}) + Au

collisions at the top Relativistic Heavy-Ion Collider (RHIC) energy and

p + Pb, Xe + Xe

, and

Pb + Pb

collisions at Large Hadron Collider (LHC) energies. We identify the produced particle rapidity distributions in asymmetric collision systems as particularly useful for constraining models of the early-time longitudinal dynamics.

Note:

20 pages, 19 figures

p: rapidity
charge: fluctuation
baryon: charge
p: asymmetry
particle: yield
baryon: density
heavy ion: scattering
energy-momentum: conservation law
p p: scattering
p nucleus: scattering

References(94)

Figures(27)

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