Side Ridge in Ar + KCl Collisions at 1.8 GeV/nucleon with Reaction-Plane Deblurring
Nuclear Experiment
2023-09-06 v1 Nuclear Theory
Abstract
Reaction-plane deblurring is applied to the triple-differential distributions of protons, deuterons and negatively charged pions from central Ar + KCl collisions at 1.8 GeV/nucleon, measured with the LBL-GSI Streamer Chamber, to yield distributions relative to the true reaction plane of the collisions. Within the reaction plane and in the forward cm rapidity region a side ridge away from the beam axis is observed: the distributions peak away from the beam direction for protons and deuterons but not for pions. These findings are consistent with a source of particles moving at an in-plane transverse velocity of ~0.1 c. Transport pBUU calculations yield results in semi-quantitative agreement with those from the data.
Cite
@article{arxiv.2309.00813,
title = {Side Ridge in Ar + KCl Collisions at 1.8 GeV/nucleon with Reaction-Plane Deblurring},
author = {Pawel Danielewicz and Herbert Stroebele and Pierre Nzabahimana},
journal= {arXiv preprint arXiv:2309.00813},
year = {2023}
}
Comments
5 pages, 3 figures