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Title: Rapidity Dependence of HBT Correlation Radii in Non-Boost Invariant Models

Abstract

Hanbury-Brown Twiss (HBT) correlation measurements provide valuable information about the phase space distribution of matter in ultrarelativistic heavy-ion collisions. The rapidity dependence of HBT radii arises from a nontrivial interplay between longitudinal and transverse expansion and the time dependence of the freeze-out pattern. For a non-accelerating longitudinal expansion the dependence primarily arises from the amount of radiating matter per unit rapidity dN/d{eta}, but for a scenario with strong longitudinal acceleration additional complications occur. In this paper I explore schematically what type of dependence can be expected for RHIC conditions under different model assumptions for the dynamics of spacetime expansion and freeze-out.

Authors:
 [1]
  1. Department of Physics, Duke University, PO Box 90305, Durham, NC 27708 (United States)
Publication Date:
OSTI Identifier:
20800125
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 828; Journal Issue: 1; Conference: 35. internationals symposium on multiparticle dynamics; Workshop on particle correlations and femtoscopy, Kromeriz (Czech Republic), 9-17 Aug 2005; Other Information: DOI: 10.1063/1.2197460; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCELERATION; BROOKHAVEN RHIC; CORRELATIONS; DISTRIBUTION; EXPANSION; HEAVY ION REACTIONS; PARTICLE RAPIDITY; PHASE SPACE; RELATIVISTIC RANGE; SPACE-TIME; TIME DEPENDENCE

Citation Formats

Renk, Thorsten. Rapidity Dependence of HBT Correlation Radii in Non-Boost Invariant Models. United States: N. p., 2006. Web. doi:10.1063/1.2197460.
Renk, Thorsten. Rapidity Dependence of HBT Correlation Radii in Non-Boost Invariant Models. United States. doi:10.1063/1.2197460.
Renk, Thorsten. Tue . "Rapidity Dependence of HBT Correlation Radii in Non-Boost Invariant Models". United States. doi:10.1063/1.2197460.
@article{osti_20800125,
title = {Rapidity Dependence of HBT Correlation Radii in Non-Boost Invariant Models},
author = {Renk, Thorsten},
abstractNote = {Hanbury-Brown Twiss (HBT) correlation measurements provide valuable information about the phase space distribution of matter in ultrarelativistic heavy-ion collisions. The rapidity dependence of HBT radii arises from a nontrivial interplay between longitudinal and transverse expansion and the time dependence of the freeze-out pattern. For a non-accelerating longitudinal expansion the dependence primarily arises from the amount of radiating matter per unit rapidity dN/d{eta}, but for a scenario with strong longitudinal acceleration additional complications occur. In this paper I explore schematically what type of dependence can be expected for RHIC conditions under different model assumptions for the dynamics of spacetime expansion and freeze-out.},
doi = {10.1063/1.2197460},
journal = {AIP Conference Proceedings},
number = 1,
volume = 828,
place = {United States},
year = {Tue Apr 11 00:00:00 EDT 2006},
month = {Tue Apr 11 00:00:00 EDT 2006}
}
  • The pseudo-rapidity dependence of the elliptic flow at various excitation energies measured by the PHOBOS Collaboration in Au+Au collisions at RHIC is one of the surprising results that has not been explained before in terms of hydrodynamical models. Here we show that these data are in agreement with theoretical predictions and satisfy the universal scaling relation predicted by the Buda-Lund hydrodynamical model, based on exact solutions of perfect fluid hydrodynamics. We also show a theoretical prediction on the rapidity and transverse momentum scaling of the HBT radii measured in heavy ion collisions, based on the Buda-Lund model.
  • Cited by 3
  • Hanbury-Brown Twiss correlations are used to measure the source size for charged pions in fixed target Au-Au collision at roughly 11A {center_dot} GeV/c using the E866 spectrometer. The measured source size parameter is studied as a function of energy deposited in a zero-degree calorimeter, focusing especially on the region of very lot energy deposition which corresponds to the most central collisions.
  • Recent measurements of Hunbury Brown-Twiss (HBT) effect for charged pions and kaons by PHENIX and STAR at RHIC are reported. 3-dimensional HBT radii are extensively measured as functions of collision centrality, particle multiplicity, reaction plane and pair momentum for different collision energies and systems, and systematically compared to understand properties of the space-time evolution of source created in the relativistic heavy-ion collisions.