Correlated stopping, proton clusters and higher order proton cumulants
Abstract
© 2017, The Author(s). We investigate possible effects of correlations between stopped nucleons on higher order proton cumulants at low energy heavy-ion collisions. We find that fluctuations of the number of wounded nucleons N part lead to rather nontrivial dependence of the correlations on the centrality; however, this effect is too small to explain the large and positive four-proton correlations found in the preliminary data collected by the STAR collaboration at s=7.7 GeV. We further demonstrate that, by taking into account additional proton clustering, we are able to qualitatively reproduce the preliminary experimental data. We speculate that this clustering may originate either from collective/multi-collision stopping which is expected to be effective at lower energies or from a possible first-order phase transition, or from (attractive) final state interactions. To test these ideas we propose to measure a mixed multi-particle correlation between stopped protons and a produced particle (e.g. pion, antiproton).
- Authors:
-
- AGH Univ. of Science and Technology, Krakow (Poland)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States). Riken BNL Research Center; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1371533
- Alternate Identifier(s):
- OSTI ID: 1379832
- Report Number(s):
- BNL-114044-2017-JA
Journal ID: ISSN 1434-6044; R&D Project: PO-3
- Grant/Contract Number:
- SC0012704; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 77; Journal Issue: 5; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Riken BNL Research Center
Citation Formats
Bzdak, Adam, Koch, Volker, and Skokov, Vladimir. Correlated stopping, proton clusters and higher order proton cumulants. United States: N. p., 2017.
Web. doi:10.1140/epjc/s10052-017-4847-0.
Bzdak, Adam, Koch, Volker, & Skokov, Vladimir. Correlated stopping, proton clusters and higher order proton cumulants. United States. https://doi.org/10.1140/epjc/s10052-017-4847-0
Bzdak, Adam, Koch, Volker, and Skokov, Vladimir. Fri .
"Correlated stopping, proton clusters and higher order proton cumulants". United States. https://doi.org/10.1140/epjc/s10052-017-4847-0. https://www.osti.gov/servlets/purl/1371533.
@article{osti_1371533,
title = {Correlated stopping, proton clusters and higher order proton cumulants},
author = {Bzdak, Adam and Koch, Volker and Skokov, Vladimir},
abstractNote = {© 2017, The Author(s). We investigate possible effects of correlations between stopped nucleons on higher order proton cumulants at low energy heavy-ion collisions. We find that fluctuations of the number of wounded nucleons N part lead to rather nontrivial dependence of the correlations on the centrality; however, this effect is too small to explain the large and positive four-proton correlations found in the preliminary data collected by the STAR collaboration at s=7.7 GeV. We further demonstrate that, by taking into account additional proton clustering, we are able to qualitatively reproduce the preliminary experimental data. We speculate that this clustering may originate either from collective/multi-collision stopping which is expected to be effective at lower energies or from a possible first-order phase transition, or from (attractive) final state interactions. To test these ideas we propose to measure a mixed multi-particle correlation between stopped protons and a produced particle (e.g. pion, antiproton).},
doi = {10.1140/epjc/s10052-017-4847-0},
journal = {European Physical Journal. C, Particles and Fields},
number = 5,
volume = 77,
place = {United States},
year = {Fri May 05 00:00:00 EDT 2017},
month = {Fri May 05 00:00:00 EDT 2017}
}
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