Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Probing the properties of event-by-event distributions in Hanbury-Brown–Twiss radii

Journal Article · · Physical Review C, Nuclear Physics
 [1];  [2]
  1. The Ohio State Univ., Columbus, OH (United States); The Ohio State University
  2. The Ohio State Univ., Columbus, OH (United States)
+ Show Author Affiliations
Hanbury-Brown–Twiss interferometry is a method which yields effective widths (i.e., “HBT radii”) of homogeneity regions in the fireballs produced in heavy ion collisions. Because the initial conditions of these collisions are stochastically fluctuating, the measured HBT radii also exhibit variation on an event-by-event basis. Yet, HBT measurements have, to date, been performed only on an ensemble-averaged basis, due to inherent limitations of finite particle statistics. Here, we show that experimental measurements to date are best characterized theoretically as weighted averages of the event-by-event HBT radii, and we propose a new method for extracting experimentally both the arithmetic mean and the variance of the event-by-event distribution of HBT radii. We demonstrate the extraction of the mean and variance of this distribution for a particular ensemble of numerically generated events, and offer some ideas to extend and generalize the method to enable measurement of higher moments of the HBT distribution as well.
Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Grant/Contract Number:
SC0004286; SC0004104
OSTI ID:
1604419
Alternate ID(s):
OSTI ID: 1223548
Journal Information:
Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 4 Vol. 92; ISSN 0556-2813; ISSN PRVCAN
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (15)

Particle interferometry for relativistic heavy-ion collisions journal October 1999
Tilted pion sources from azimuthally sensitive HBT interferometry journal September 2000
Azimuthal dependence of pion interferometry at the AGS journal December 2000
The iEBE-VISHNU code package for relativistic heavy-ion collisions journal February 2016
Validity of the smoothness assumption for calculating two-boson correlations in high-energy collisions journal August 1997
Two-particle interferometry for noncentral heavy-ion collisions journal January 1998
Effect of shear viscosity on spectra, elliptic flow, and Hanbury Brown–Twiss radii journal September 2003
Radiative energy loss and v 2 spectra for viscous hydrodynamics journal March 2010
Azimuthally sensitive femtoscopy in event-by-event hydrodynamics journal April 2014
Interferometric signatures of the temperature dependence of the specific shear viscosity in heavy-ion collisions journal May 2015
Single-particle distribution in the hydrodynamic and statistical thermodynamic models of multiparticle production journal July 1974
Azimuthal-Angle Dependence of Charged-Pion-Interferometry Measurements with Respect to Second- and Third-Order Event Planes in Au + Au Collisions at s N N = 200    GeV journal June 2014
Azimuthally Sensitive Hanbury Brown–Twiss Interferometry in A u + A u Collisions at s N N = 200     G e V journal June 2004
T WO -P ARTICLE C ORRELATIONS IN R ELATIVISTIC H EAVY -I ON C OLLISIONS journal December 1999
FEMTOSCOPY IN RELATIVISTIC HEAVY ION COLLISIONS: Two Decades of Progress journal December 2005

Cited By (1)

Averaging and the Shape of the Correlation Function journal June 2019

Similar Records

Observable consequences of event-by-event fluctuations of HBT radii
Journal Article · Wed Oct 05 00:00:00 EDT 2016 · Nuclear Physics. A · OSTI ID:1604415
Hanbury-Brown–Twiss correlation functions and radii from event-by-event hydrodynamics
Journal Article · Mon Sep 17 00:00:00 EDT 2018 · Physical Review C · OSTI ID:1604339
Photon Hanbury-Brown-Twiss interferometry for noncentral heavy-ion collisions
Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics · OSTI ID:21293968

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS