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Thermal emission of pions in antiproton-proton annihilation at 12 GeV/c |
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| Authors: | G. W. van Apeldoorn S. Barshay D. Harting D. J. Holthuizen P. G. Kuijer B. J. Pijlgroms V. Karimäki R. Kimumem M. Korkea-aho P. Johnson P. Michaelides Ch. Michaelidou D. G. Patel |
| Affiliation: | 1. NIKHEF-H, Amsterdam, The Netherlands 3. University of Helsinki, SF-00170, Helsinki 17, Finland 4. University of Liverpool, 693BX, Liverpool, UK |
| Abstract: | Using data of (bar pp) annihilation at 12 GeV/c we have found that centrally-emitted pions follow a thermal energy spectrum with an inclusive temperature of 111±2 MeV, the same as has been found for pions produced in πp collisions at 16 GeV/c. An analysis of individual high-multiplicity events to search for fluctuations in the temperature parameter on an event-byevent basis has been made, using two different methods. We obtained the value 0.18±0.02 for the relative dispersion of the temperature fluctuations. |
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