【摘 要】
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We study the reconstruction of the source function in space-time directly from the measured Hanbury-Brown/Twiss (HBT) correlation function using the maximum ent
【机 构】
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Institute of Particle Physics, Huazhong Normal University, Wuhan 430079
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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 implications of our results for the remaining freedom in building source models consistent with a given set of measured HBT radius parameters.
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