We investigate the two-pion interferometry in ultrarelativistic heavy ion collisions in the granular source model of quark-gluon plasma droplets.The pion transverse momentum spectra and HBT radii of the granular sourc...We investigate the two-pion interferometry in ultrarelativistic heavy ion collisions in the granular source model of quark-gluon plasma droplets.The pion transverse momentum spectra and HBT radii of the granular sources agree well with the experimental data of the most central Au-Au collisions at(sNN)1/2=200 GeV at the RHIC and Pb−Pb collisions at(sNN)1/2=2.76 TeV at the LHC.In the granular source model the larger initial system breakup time for the LHC collisions as compared to the RHIC collisions may lead to the larger HBT radii Rout,Rside and Rlong.However,the large droplet transverse expansion and limited average relative emitting time of particles in the granular source lead to slightly smaller ratios of the transverse Hanbury–Brown–Twiss radii Rout/Rside.展开更多
The out-of-plane squeeze-out effect in relativistic heavy ion collisions is used to estimate the reaction plane by performing a modified transverse momentum analysis.A technique for investigating the azimuthal correla...The out-of-plane squeeze-out effect in relativistic heavy ion collisions is used to estimate the reaction plane by performing a modified transverse momentum analysis.A technique for investigating the azimuthal correlation between the out-of-plane squeeze-out and directed in-plane flow is described.A clear signature of the azimuthal correlation is evidenced in the 600 A MeV Au+Au reaction from the quantum molecular dynamic model calculations.展开更多
Using the relativistic quantum molecular dynamics approach, with a correlation after-burner, the physics of the transverse momentum dependence of the Hanbury-Brown and Twiss parameters is studied for Au t Au, Si + Si ...Using the relativistic quantum molecular dynamics approach, with a correlation after-burner, the physics of the transverse momentum dependence of the Hanbury-Brown and Twiss parameters is studied for Au t Au, Si + Si and p + p collisions at the centre-of-mass energy v s=200 AGeV. The results indicate that the space-momentum correlations would affect such dependence in both heavy-ion and elementary collisions. The size parameters as a function of the transverse mass mt are sensitive to the degree of space-momentum correlations.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 11075027.
文摘We investigate the two-pion interferometry in ultrarelativistic heavy ion collisions in the granular source model of quark-gluon plasma droplets.The pion transverse momentum spectra and HBT radii of the granular sources agree well with the experimental data of the most central Au-Au collisions at(sNN)1/2=200 GeV at the RHIC and Pb−Pb collisions at(sNN)1/2=2.76 TeV at the LHC.In the granular source model the larger initial system breakup time for the LHC collisions as compared to the RHIC collisions may lead to the larger HBT radii Rout,Rside and Rlong.However,the large droplet transverse expansion and limited average relative emitting time of particles in the granular source lead to slightly smaller ratios of the transverse Hanbury–Brown–Twiss radii Rout/Rside.
基金Supported by the National Natural Science Foundation of China under Grant No.19875012the Scientific Research Foundation of Harbin Institute of Technology(Project:991190-015)。
文摘The out-of-plane squeeze-out effect in relativistic heavy ion collisions is used to estimate the reaction plane by performing a modified transverse momentum analysis.A technique for investigating the azimuthal correlation between the out-of-plane squeeze-out and directed in-plane flow is described.A clear signature of the azimuthal correlation is evidenced in the 600 A MeV Au+Au reaction from the quantum molecular dynamic model calculations.
基金Supported by the National Natural Science Foundation of China under Grant No.19875012the Scientific Research Foundation of Harbin Institute of Technology.
文摘Using the relativistic quantum molecular dynamics approach, with a correlation after-burner, the physics of the transverse momentum dependence of the Hanbury-Brown and Twiss parameters is studied for Au t Au, Si + Si and p + p collisions at the centre-of-mass energy v s=200 AGeV. The results indicate that the space-momentum correlations would affect such dependence in both heavy-ion and elementary collisions. The size parameters as a function of the transverse mass mt are sensitive to the degree of space-momentum correlations.
