Pion Interferometry for Hydrodynamical Expanding Source with a Finite Baryon Density |
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作者姓名: | 张卫宁 EFAAFM.J 黄卓然 KHALILIASRM |
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作者单位: | [1]DepartmentofPhysics,HarbinInstituteofTechnology,Harbin150006 [2]PhysicsDivision,OakRidgeNationalLaboratory,OakRidge,TN37831,USA |
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摘 要: | We calculate the two-pion correlation function for an expanding hadron source with a finite baryon density. The space-time evolution of the source is described by relativistic hydrodynamics and the Hanbury-Brown-Twiss (HBT) radius is extracted after effects of collective expansion and multiple scattering on the HBT interferometry have been taken into account, using quantum probability amplitudes in a path-integral formalism. We find that this radius is substantially smaller than the HBT radius extracted from the freeze-out configuration.
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关 键 词: | 有限重子密度 介子干涉量度学 玻色-爱因斯坦相关 Hanbury-Brown-Twiss效应 粒子物理学 |
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