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Title: Hanbury-Brown–Twiss interferometry relative to the triangular flow plane in heavy-ion collisions

Abstract

The PHENIX Collaboration has reported third-order harmonic oscillations of the source radius parameters when measuring the Hanbury-Brown–Twiss (HBT) correlation function for charged hadrons relative to the triangular flow angle. We explore possible origins of such third-order oscillations with a simple Gaussian emission function featuring both a triangular geometric deformation and triangular flow. Third-order oscillations of the HBT radii can arise from a purely geometric triangular deformation superimposed on an azimuthally symmetric radial flow, or from a radially symmetry spatial distribution which expands anisotropically with a triangular component in the flow velocity profile. In both cases the final particle momentum distribution features triangular flow. Here, we show that the two alternatives can be distinguished experimentally through the phase of the azimuthal oscillations of the HBT radii relative to the triangular flow plane.

Authors:
 [1];  [1]; ORCiD logo [1]
  1. The Ohio State Univ., Columbus, OH (United States). Dept. of Physics
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1604549
Grant/Contract Number:  
SC0004286; SC0004104
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 88; Journal Issue: 4; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Plumberg, Christopher J., Shen, Chun, and Heinz, Ulrich. Hanbury-Brown–Twiss interferometry relative to the triangular flow plane in heavy-ion collisions. United States: N. p., 2013. Web. doi:10.1103/PhysRevC.88.044914.
Plumberg, Christopher J., Shen, Chun, & Heinz, Ulrich. Hanbury-Brown–Twiss interferometry relative to the triangular flow plane in heavy-ion collisions. United States. doi:10.1103/PhysRevC.88.044914.
Plumberg, Christopher J., Shen, Chun, and Heinz, Ulrich. Mon . "Hanbury-Brown–Twiss interferometry relative to the triangular flow plane in heavy-ion collisions". United States. doi:10.1103/PhysRevC.88.044914. https://www.osti.gov/servlets/purl/1604549.
@article{osti_1604549,
title = {Hanbury-Brown–Twiss interferometry relative to the triangular flow plane in heavy-ion collisions},
author = {Plumberg, Christopher J. and Shen, Chun and Heinz, Ulrich},
abstractNote = {The PHENIX Collaboration has reported third-order harmonic oscillations of the source radius parameters when measuring the Hanbury-Brown–Twiss (HBT) correlation function for charged hadrons relative to the triangular flow angle. We explore possible origins of such third-order oscillations with a simple Gaussian emission function featuring both a triangular geometric deformation and triangular flow. Third-order oscillations of the HBT radii can arise from a purely geometric triangular deformation superimposed on an azimuthally symmetric radial flow, or from a radially symmetry spatial distribution which expands anisotropically with a triangular component in the flow velocity profile. In both cases the final particle momentum distribution features triangular flow. Here, we show that the two alternatives can be distinguished experimentally through the phase of the azimuthal oscillations of the HBT radii relative to the triangular flow plane.},
doi = {10.1103/PhysRevC.88.044914},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 4,
volume = 88,
place = {United States},
year = {2013},
month = {10}
}

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