Observable consequences of event-by-event fluctuations of HBT radii

Plumberg, Christopher; Heinz, Ulrich

doi:10.1016/j.nuclphysa.2016.01.009

Title: Observable consequences of event-by-event fluctuations of HBT radii

Abstract

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.

Authors:

Plumberg, Christopher ^[1];

^[1]

The Ohio State Univ., Columbus, OH (United States)

Publication Date:: Wed Oct 05 00:00:00 EDT 2016

Research Org.:: The Ohio State Univ., Columbus, OH (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1604415

Grant/Contract Number:: SC0004286

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Physics. A

Additional Journal Information:: Journal Volume: 956; Journal Issue: C; Journal ID: ISSN 0375-9474

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Plumberg, Christopher, and Heinz, Ulrich. Observable consequences of event-by-event fluctuations of HBT radii.  United States: N. p., 2016. 
Web.  doi:10.1016/j.nuclphysa.2016.01.009.

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                    Plumberg, Christopher, & Heinz, Ulrich. Observable consequences of event-by-event fluctuations of HBT radii.  United States.  https://doi.org/10.1016/j.nuclphysa.2016.01.009

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                    Plumberg, Christopher, and Heinz, Ulrich. Wed .  
"Observable consequences of event-by-event fluctuations of HBT radii".  United States.  https://doi.org/10.1016/j.nuclphysa.2016.01.009.  https://www.osti.gov/servlets/purl/1604415.

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@article{osti_1604415,

  title        = {Observable consequences of event-by-event fluctuations of HBT radii},

  author       = {Plumberg, Christopher and Heinz, Ulrich},

  abstractNote = {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.},

  doi          = {10.1016/j.nuclphysa.2016.01.009},

  journal      = {Nuclear Physics. A},

  number       = C,

  volume       = 956,

  place        = {United States},

  year         = {Wed Oct 05 00:00:00 EDT 2016},

  month        = {Wed Oct 05 00:00:00 EDT 2016}

}

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https://doi.org/10.1016/j.nuclphysa.2016.01.009

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Works referenced in this record:

Influence of temperature-dependent shear viscosity on elliptic flow at backward and forward rapidities in ultrarelativistic heavy-ion collisions
journal, October 2014

Molnár, E.; Holopainen, H.; Huovinen, P.
Physical Review C, Vol. 90, Issue 4
DOI: 10.1103/PhysRevC.90.044904

T WO -P ARTICLE C ORRELATIONS IN R ELATIVISTIC H EAVY -I ON C OLLISIONS
journal, December 1999

Heinz, Ulrich; Jacak, Barbara V.
Annual Review of Nuclear and Particle Science, Vol. 49, Issue 1
DOI: 10.1146/annurev.nucl.49.1.529

Particle interferometry for relativistic heavy-ion collisions
journal, October 1999

Wiedemann, Urs Achim; Heinz, Ulrich
Physics Reports, Vol. 319, Issue 4-5
DOI: 10.1016/S0370-1573(99)00032-0

Interferometric signatures of the temperature dependence of the specific shear viscosity in heavy-ion collisions
journal, May 2015

Plumberg, Christopher; Heinz, Ulrich
Physical Review C, Vol. 91, Issue 5
DOI: 10.1103/PhysRevC.91.054905

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Similar Records

Title: Observable consequences of event-by-event fluctuations of HBT radii

Abstract

Citation Formats

Influence of temperature-dependent shear viscosity on elliptic flow at backward and forward rapidities in ultrarelativistic heavy-ion collisions journal, October 2014

T WO -P ARTICLE C ORRELATIONS IN R ELATIVISTIC H EAVY -I ON C OLLISIONS journal, December 1999

Particle interferometry for relativistic heavy-ion collisions journal, October 1999

Interferometric signatures of the temperature dependence of the specific shear viscosity in heavy-ion collisions journal, May 2015

Influence of temperature-dependent shear viscosity on elliptic flow at backward and forward rapidities in ultrarelativistic heavy-ion collisions
journal, October 2014

T WO -P ARTICLE C ORRELATIONS IN R ELATIVISTIC H EAVY -I ON C OLLISIONS
journal, December 1999

Particle interferometry for relativistic heavy-ion collisions
journal, October 1999

Interferometric signatures of the temperature dependence of the specific shear viscosity in heavy-ion collisions
journal, May 2015