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Multidimensional HBT correlations in proton-antiproton collisions at root(s) = 630 GeV

H. C. Eggers·B. Buschbeck·F. J. October
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Abstract

We analyse second moments $R_2$ of like-sign pion pairs in the two-dimensional $(q_L,q_T)$ and three-dimensional $(q_O,q_S,q_L)$ decompositions of the three-momentum difference. Conventional fit parametrisations such as gaussian, exponential, power-law and Edgeworth fail miserably, while more elaborate ones such as Levy do well but fail to yield a unique best-fit solution. A two-component model using a hard cut to separate small- and large-scale parts appears possible but not compelling. In all cases, the data exhibits a strong and hitherto unexplained peak at small momentum differences which exceeds current fits.

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H. C. Eggers, B. Buschbeck, F. J. October. 2005-11-23. Multidimensional HBT correlations in proton-antiproton collisions at root(s) = 630 GeV. https://arxiv.org/abs/hep-ex/0511050

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