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Title: Testing hydrodynamic descriptions of p+p collisions at $$\sqrt{s}=7$$ TeV

Abstract

In high-energy collisions of heavy ions, experimental findings of collective flow are customarily associated with the presence of a thermalized medium expanding according to the laws of hydrodynamics. Recently, the ATLAS, CMS, and ALICE experiments found signals of the same type and magnitude in ultrarelativistic proton-proton collisions. In this study, the state-of-the-art hydrodynamic model SONIC is used to simulate the systems created in p+p collisions. By varying the size of the second-order transport coefficients, the range of applicability of hydrodynamics itself to the systems created in p+p collisions is quantified. It is found that hydrodynamics can give quantitatively reliable results for the particle spectra and the elliptic momentum anisotropy coefficient v 2. As a result, using a simple geometric model of the proton based on the elastic form factor leads to results of similar type and magnitude to those found in experiment when allowing for a small bulk viscosity coefficient.

Authors:
 [1];  [2];  [1];  [3]
  1. Univ. of Colorado, Boulder, CO (United States)
  2. Univ. of Washington, Seattle, WA (United States)
  3. Univ. of Colorado, Boulder, CO (United States); Guizhou Univ. of Finance and Economics, Guiyang (China)
Publication Date:
Research Org.:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1264788
Alternate Identifier(s):
OSTI ID: 1437932
Grant/Contract Number:
SC0008132; FG02-97ER41014
Resource Type:
Journal Article: Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 76; Journal Issue: 7; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Transverse Momentum; Systematic Uncertainty; Bulk Viscosity; Gluon Plasma; Proton Collision

Citation Formats

Habich, M., Miller, G. A., Romatschke, Paul, and Xiang, W. Testing hydrodynamic descriptions of p+p collisions at $\sqrt{s}=7$ TeV. United States: N. p., 2016. Web. doi:10.1140/epjc/s10052-016-4237-z.
Habich, M., Miller, G. A., Romatschke, Paul, & Xiang, W. Testing hydrodynamic descriptions of p+p collisions at $\sqrt{s}=7$ TeV. United States. doi:10.1140/epjc/s10052-016-4237-z.
Habich, M., Miller, G. A., Romatschke, Paul, and Xiang, W. Tue . "Testing hydrodynamic descriptions of p+p collisions at $\sqrt{s}=7$ TeV". United States. doi:10.1140/epjc/s10052-016-4237-z.
@article{osti_1264788,
title = {Testing hydrodynamic descriptions of p+p collisions at $\sqrt{s}=7$ TeV},
author = {Habich, M. and Miller, G. A. and Romatschke, Paul and Xiang, W.},
abstractNote = {In high-energy collisions of heavy ions, experimental findings of collective flow are customarily associated with the presence of a thermalized medium expanding according to the laws of hydrodynamics. Recently, the ATLAS, CMS, and ALICE experiments found signals of the same type and magnitude in ultrarelativistic proton-proton collisions. In this study, the state-of-the-art hydrodynamic model SONIC is used to simulate the systems created in p+p collisions. By varying the size of the second-order transport coefficients, the range of applicability of hydrodynamics itself to the systems created in p+p collisions is quantified. It is found that hydrodynamics can give quantitatively reliable results for the particle spectra and the elliptic momentum anisotropy coefficient v2. As a result, using a simple geometric model of the proton based on the elastic form factor leads to results of similar type and magnitude to those found in experiment when allowing for a small bulk viscosity coefficient.},
doi = {10.1140/epjc/s10052-016-4237-z},
journal = {European Physical Journal. C, Particles and Fields},
number = 7,
volume = 76,
place = {United States},
year = {Tue Jul 19 00:00:00 EDT 2016},
month = {Tue Jul 19 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1140/epjc/s10052-016-4237-z

Citation Metrics:
Cited by: 11works
Citation information provided by
Web of Science

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