Source Function Determined from Hanbury—Brown/Twiss Correlations by the Maximum Entropy Principle |
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引用本文: | 吴元芳,刘连寿.Source Function Determined from Hanbury—Brown/Twiss Correlations by the Maximum Entropy Principle[J].中国物理快报,2002,19(2):197-200. |
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作者姓名: | 吴元芳 刘连寿 |
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作者单位: | InstituteofParticlePhysics,HuazhongNormalUniversity,Wuhan430079 |
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摘 要: | We study the reconstruction of the source function in space-time directly from the measured Hanbury-Brown/Twiss (HBT) correlation function using the maximum entropy principle.We find that the problem is ill-defined without at least one additional theoretical constraint as input.Using the requirement of a finite source lifetime for the problem we find a new Gaussian parametrization of the source function directly in terms of the measured HBT radius parameters and its lifetime,where the latter is a free parameter which is not directly measurable by HBT.We discuss the implication of our results for the remaining freed om in building source models consistent with a given set of measured HBT radius parameters.
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关 键 词: | 重离子碰撞 最大熵原理 源函数 |
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