Testing hydrodynamic descriptions of p+p collisions at $$\sqrt{s}=7$$ TeV
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]
- Univ. of Colorado, Boulder, CO (United States)
- Univ. of Washington, Seattle, WA (United States)
- Univ. of Colorado, Boulder, CO (United States); Guizhou Univ. of Finance and Economics, Guiyang (China)
- Publication Date:
- Grant/Contract Number:
- SC0008132; FG02-97ER-41014
- Type:
- 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
- Research Org:
- Univ. of Colorado, Boulder, CO (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- 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
- OSTI Identifier:
- 1264788
- Alternate Identifier(s):
- OSTI ID: 1437932