Two-particle interferometry of positive kaons is studied in Pb + Pb collisions at mean transverse momenta ⟨PT≹≈0.25 and 0.91GeV/C. A three-dimensional analysis was applied to the lower pT data, while a two-dimensional analysis was used for the higher pT data. We find that the source-size parameters are consistent with the mT scaling curve observed in pion-correlation measurements in the same collisions, and that the duration time of kaon emission is consistent with zero within the experimental sensitivity.

Original languageEnglish
JournalPhysical Review Letters
Issue number11
Publication statusPublished - 2001 Aug 23


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