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

H C Eggers·B Buschbeck·F J October
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Abstract

Correlations of like-sign pion pairs emerging from proton-antiproton collisions are analysed in the two-dimensional (q_L,q_T) decomposition of the three-momentum difference q. While the data cannot be adequately represented by gaussian, exponential, power-law or Edgeworth parametrisations, more elaborate ones such as Levy and an exponential with a cross term do better. A two-scale model using a hard cut to separate small and large scales may indicate a core that is more prolate than the halo. Consideration not only of the interference peak at small (q_L,q_T), but also of the shape of the correlation distribution at intermediate momentum differences is crucial to understanding the data.

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H C Eggers, B Buschbeck, F J October. 2006-01-24. Transverse-longitudinal HBT correlations in proton-antiproton collisions at root(s) = 630 GeV. https://doi.org/10.1016/j.physletb.2006.03.015

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