Observable consequences of event-by-event fluctuations of HBT radii
We explore the effects of event-by-event fluctuations of Hanbury Brown–Twiss (HBT) radii and show how they can be observed experimentally. The relation of measured HBT radii extracted from ensemble-averaged correlation functions to the mean of their event-by-event probability distribution is clarified. Here, we propose a method to experimentally determine the mean and variance of this distribution and test it on an ensemble of fluctuating events generated with the viscous hydrodynamic code VISH2+1. Using the same code, the sensitivity of the mean and variance of the HBT radii to the specific QGP shear viscosity $$\eta$$/s is studied. We report sensitivity of the mean pion HBT radii and their variances to the temperature dependence of \eta/s near the quark-hadron transition at a level similar (10-20%) to that which was previously observed for elliptic and quadrangular flow of charged hadrons.
- Research Organization:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0004286
- OSTI ID:
- 1604415
- Journal Information:
- Nuclear Physics. A, Vol. 956, Issue C; ISSN 0375-9474
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Influence of temperature-dependent shear viscosity on elliptic flow at backward and forward rapidities in ultrarelativistic heavy-ion collisions
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journal | October 2014 |
T
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journal | December 1999 |
Particle interferometry for relativistic heavy-ion collisions
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journal | October 1999 |
Interferometric signatures of the temperature dependence of the specific shear viscosity in heavy-ion collisions
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journal | May 2015 |
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