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Title: Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models

Abstract

We trace the development of azimuthal anisotropy (vn, n = 2, 3) via parton-parton collision history in two transport models. The parton vn is studied as a function of the number of collisions of each parton in Au+Au and d+Au collisions at √ sNN = 200 GeV. Findings show that the majority of vn comes from the anisotropic escape probability of partons, with no fundamental difference at low and high transverse momenta. The contribution to vn from hydrodynamic-type collective flow is found to be small. Only when the parton-parton cross-section is set unrealistically large does this contribution start to take over. Our findings challenge the current paradigm emerged from hydrodynamic comparisons to anisotropy data.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1234183
Alternate Identifier(s):
OSTI ID: 1242352
Grant/Contract Number:  
FG02-88ER40412; FG02-13ER16413
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 753 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; quark-gluon plasma; anisotropic flow; transport model; hydrodynamics

Citation Formats

He, Liang, Edmonds, Terrence, Lin, Zi-Wei, Liu, Feng, Molnar, Denes, and Wang, Fuqiang. Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models. Netherlands: N. p., 2016. Web. doi:10.1016/j.physletb.2015.12.051.
He, Liang, Edmonds, Terrence, Lin, Zi-Wei, Liu, Feng, Molnar, Denes, & Wang, Fuqiang. Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models. Netherlands. https://doi.org/10.1016/j.physletb.2015.12.051
He, Liang, Edmonds, Terrence, Lin, Zi-Wei, Liu, Feng, Molnar, Denes, and Wang, Fuqiang. 2016. "Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models". Netherlands. https://doi.org/10.1016/j.physletb.2015.12.051.
@article{osti_1234183,
title = {Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models},
author = {He, Liang and Edmonds, Terrence and Lin, Zi-Wei and Liu, Feng and Molnar, Denes and Wang, Fuqiang},
abstractNote = {We trace the development of azimuthal anisotropy (vn, n = 2, 3) via parton-parton collision history in two transport models. The parton vn is studied as a function of the number of collisions of each parton in Au+Au and d+Au collisions at √ sNN = 200 GeV. Findings show that the majority of vn comes from the anisotropic escape probability of partons, with no fundamental difference at low and high transverse momenta. The contribution to vn from hydrodynamic-type collective flow is found to be small. Only when the parton-parton cross-section is set unrealistically large does this contribution start to take over. Our findings challenge the current paradigm emerged from hydrodynamic comparisons to anisotropy data.},
doi = {10.1016/j.physletb.2015.12.051},
url = {https://www.osti.gov/biblio/1234183}, journal = {Physics Letters B},
issn = {0370-2693},
number = C,
volume = 753,
place = {Netherlands},
year = {Mon Feb 01 00:00:00 EST 2016},
month = {Mon Feb 01 00:00:00 EST 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1016/j.physletb.2015.12.051

Citation Metrics:
Cited by: 92 works
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