Presentation is loading. Please wait.

Presentation is loading. Please wait.

Flow and Femtoscopy from QGP Hydro + Hadronic Cascade Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo WPCF, Aug. 1-3, 2007.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "Flow and Femtoscopy from QGP Hydro + Hadronic Cascade Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo WPCF, Aug. 1-3, 2007."— Presentation transcript:

1 Flow and Femtoscopy from QGP Hydro + Hadronic Cascade Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo WPCF, Aug. 1-3, 2007

2 Outline Part 1 Mass ordering of v 2 (p T ) revisited Violation of mass ordering for  mesons Part 2 Source functions from hydro + cascade 1D 3D (r side, r out, r long )-directions Summary TH, U.Heinz, D.Kharzeev, R.Lacey, and Y.Nara (in preparation)

3 Is Mass Ordering of v 2 (p T ) a Direct Signal of Perfect Fluidity? STAR white paper (’05) PHENIX white paper (’05) Lines: Results from Ideal hydro

4 Motivation To understand the QGP in H.I.C., need to understand the hadronic stage since Indispensable to disentangle these effects for understanding of unknowns.

5 A Hybrid Approach: QGP hydro + hadronic cascade 0 collision axis time Au QGP fluid Initial condition: Transverse  Glauber Longitudinal  “BGK triangle” QGP fluid: 3D ideal hydrodynamics (Hirano) massless free u,d,s+g gas + bag const. T c = 170 MeV Hadron gas: Hadronic cascade, JAM1.09 (Nara) T sw = 169 MeV hadron gas TH et al.(’06) (1D) Bass, Dumitru (2D) Teaney, Lauret, Shuryak, (3D) Nonaka, Bass, Hirano et al.

6 Pseudorapidity Distribution Tune initial parameters with T th = 100MeV to reproduce dN/deta. Then, switch to hadronic cascade below T=T sw. Caveat: Rejecting in- coming particles at T sw

7 p T spectra for pi, K, and p Reasonable reproduction of yields and spectra in low p T region (p T <~1.5 GeV/c) TH et al. (in preparation).

8 v 2 (p T ) for pi, K, and p OK! Fail to reproduce data due to (absence of) fluctuation of geometry Miller&Snelling (’03), Bhalerao&Ollitrault(’06) Andrade et al (’06),Drescher&Nara (’07) Browniowski et al(’07) TH et al. (in preparation).

9 Hydro + Cascade at Work in Forward Rapidity Regions Adapted from S.J.Sanders (BRAHMS) @ QM2006

10 Origin of Mass Ordering Mass ordering behavior results from hadronic rescatterings.  Not a direct signal of “perfect fluid QGP” TH et al. (in preparation). b=7.2fm

11 What happens to strangeness sector?

12 Additive Quark Model in Transport Codes (JAM/RQMD/UrQMD) For cross sections without exp. data, Expected to be very small for phi, Omega, etc.

13 Distribution of Freeze-Out Time b=2.0fm (no decay) TH et al. (in preparation). Early kinetic freezeout for multistrange hadrons: van Hecke, Sorge, Xu(’98)

14  -meson case in p T < 1 GeV/c Just after hadronization Final results T = T sw = 169 MeV b=7.2fm TH et al. (in preparation). Caveat: Published PHENIX data obtained in p T >~1GeV/c for  mesons This is NOT obtained within ideal hydrodynamics.

15 Summary of flow part A QGP fluid with hadronic rescattering Reproduction of v 2 (p T,m)  A hybrid model works well. Origin of mass ordering of v 2 (p T )  Radial flow effect, not “ mass effect ”. Violation of mass ordering for phi mesons Mass ordering itself is not a direct signal of perfect fluidity!

16 Femtoscopy from Hydro + Cascade From momentum space to configuration space

17 Source Imaging Primed in PCMS (P = 0) Source Imaging: Inverse problem from C to D with a kernel K No more Gaussian parametrization! Source Imaging: Inverse problem from C to D with a kernel K No more Gaussian parametrization! Koonin-Pratt eq.: Source function and normalized emission rate (Brown&Danielewicz (’97-))

18 Distribution of the Last Interaction Point from Hydro + Cascade Blink: Ideal Hydro, Kolb and Heinz (2003) x-t x-y p x ~ 0.5 GeV/c for pions Long tail (  decay? elastic scattering?) Positive x-t correlation

19 1D Source Function from Hydro + Cascade 0.48 < K T <0.6 GeV/c0.2 < K T <0.36 GeV/c Angle averaged source function Broader than PHENIX data Almost no K T dependence  PHENIX data Significant effects of hadronic rescatterings K T =P T /2

20 1D Source Function from Hydro + Cascade (contd.) K T dependence Centrality dependence Almost no K T dependence Sensitive to impact parameter lambda=1.0 0.2< K T <0.36 GeV/c b=5.8fm lambda = 1.0

21 3D Source Function from Hydro + Cascade (preliminary!) side outlong Source function in PCMS 1fm-slice in each direction 0.2<K T <0.4 GeV/c, |  | < 0.35,  + -  +,  - -  - pairs Red: Without rescattering, Black: With rescattering No longer Gaussian shape (Lines: Gaussian) Broaden by hadronic rescatterings

22 Summary of Femtoscopy 1D- and 3D-source functions from a dynamical model (QGP hydro + hadronic cascade) Significant rescattering effects are seen. Source function is no longer Gaussian. Long tail in 1D source function is described within hadronic rescatterings. K T dependence?

23 Outlook Pair-angle dependence of source function in non-central collisions Other pairs (K, p, …) Just get started. Many other things to do…

Download ppt "Flow and Femtoscopy from QGP Hydro + Hadronic Cascade Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo WPCF, Aug. 1-3, 2007."

Similar presentations

PID v2 and v4 from Au+Au Collisions at √sNN = 200 GeV at RHIC

PID v2 and v4 from Au+Au Collisions at √sNN = 200 GeV at RHIC
QGP Viscosity & Elliptic Flow for Multi-strange Hadrons

QGP Viscosity & Elliptic Flow for Multi-strange Hadrons
Dynamic Modeling for Relativistic Heavy Ion Collisions

Dynamic Modeling for Relativistic Heavy Ion Collisions
Elliptic flow of thermal photons in Au+Au collisions at 200GeV QNP2009 Beijing, Sep 21 - 26, 2009 F.M. Liu Central China Normal University, China T. Hirano.

Elliptic flow of thermal photons in Au+Au collisions at 200GeV QNP2009 Beijing, Sep , 2009 F.M. Liu Central China Normal University, China T. Hirano.
Anisotropic Flow at RHIC Jiayun Chen (for Collaboration) Institute of Particle Physics, HZNU, Wuhan, 430079, P.R.China Brookhaven National Lab, Upton,

Anisotropic Flow at RHIC Jiayun Chen (for Collaboration) Institute of Particle Physics, HZNU, Wuhan, , P.R.China Brookhaven National Lab, Upton,
Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurements by Weak-Decayed Electrons at RHIC-PHENIX.

Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurements by Weak-Decayed Electrons at RHIC-PHENIX.
Hadronic Rescattering Effects after Hadronization of QGP Fluids Tetsufumi Hirano Institute of Physics, University of Tokyo Workshop “Hadronization” in.

Hadronic Rescattering Effects after Hadronization of QGP Fluids Tetsufumi Hirano Institute of Physics, University of Tokyo Workshop “Hadronization” in.
Hadronic dissipative effects on transverse dynamics at RHIC Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo QM2008, Feb. 4-10, 2008 TH, U.Heinz, D.Kharzeev,

Hadronic dissipative effects on transverse dynamics at RHIC Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo QM2008, Feb. 4-10, 2008 TH, U.Heinz, D.Kharzeev,
Collective Flow from QGP Hydro + Hadronic Cascade Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo ISMD, Aug. 4-10, 2007 TH, U.Heinz, D.Kharzeev, R.Lacey,

Collective Flow from QGP Hydro + Hadronic Cascade Tetsufumi Hirano Dept. of Physics The Univ. of Tokyo ISMD, Aug. 4-10, 2007 TH, U.Heinz, D.Kharzeev, R.Lacey,
Mass ordering of differential elliptic flow and its violation for  mesons Tetsufumi Hirano Dept. of Physics, The Univ. of Tokyo Matsumoto, Feb. 10-11,

Mass ordering of differential elliptic flow and its violation for  mesons Tetsufumi Hirano Dept. of Physics, The Univ. of Tokyo Matsumoto, Feb ,
In relativistic heavy ion collisions a high energy density matter Quark-Gluon Plasma (QGP) may be formed. Various signals have been proposed which probe.

In relativistic heavy ion collisions a high energy density matter Quark-Gluon Plasma (QGP) may be formed. Various signals have been proposed which probe.
Elliptic Flow Results From a Hybrid Model

Elliptic Flow Results From a Hybrid Model
DNP03, Tucson, Oct 29, 2003 1 Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.

DNP03, Tucson, Oct 29, Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.
STAR Patricia Fachini 1 Brookhaven National Laboratory Motivation Data Analysis Results Conclusions Resonance Production in Au+Au and p+p Collisions at.

STAR Patricia Fachini 1 Brookhaven National Laboratory Motivation Data Analysis Results Conclusions Resonance Production in Au+Au and p+p Collisions at.
Hydrodynamic Approaches to Relativistic Heavy Ion Collisions Tetsufumi Hirano RIKEN BNL Research Center.

Hydrodynamic Approaches to Relativistic Heavy Ion Collisions Tetsufumi Hirano RIKEN BNL Research Center.
Statistical Models A. ) Chemical equilibration B

Statistical Models A. ) Chemical equilibration B
What can we learn from hydrodynamic analysis at RHIC? Tetsufumi Hirano Dept. of Physics, Columbia Univ. Workshop on Quark-Gluon-Plasma Thermalization August.

What can we learn from hydrodynamic analysis at RHIC? Tetsufumi Hirano Dept. of Physics, Columbia Univ. Workshop on Quark-Gluon-Plasma Thermalization August.
Marcus Bleicher, WWND 2008 A fully integrated (3+1) dimensional Hydro + Boltzmann Hybrid Approach Marcus Bleicher Institut für Theoretische Physik Goethe.

Marcus Bleicher, WWND 2008 A fully integrated (3+1) dimensional Hydro + Boltzmann Hybrid Approach Marcus Bleicher Institut für Theoretische Physik Goethe.
Collision system dependence of 3-D Gaussian source size measured by RHIC-PHENIX Akitomo Enokizono Lawrence Livermore National Laboratory 23 rd Winter Workshop.

Collision system dependence of 3-D Gaussian source size measured by RHIC-PHENIX Akitomo Enokizono Lawrence Livermore National Laboratory 23 rd Winter Workshop.
Perfect Fluid: flow measurements are described by ideal hydro Problem: all fluids have some viscosity -- can we measure it? I. Radial flow fluctuations:

Perfect Fluid: flow measurements are described by ideal hydro Problem: all fluids have some viscosity -- can we measure it? I. Radial flow fluctuations:

Similar presentations

Ads by Google