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Thermal emission of pions in antiproton-proton annihilation at 12 GeV/c

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Zeitschrift für Physik C Particles and Fields

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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Author notes

  1. S. Barshay

    Present address: Instituut voor Theoretische Fysica, Universiteit van Leuven, Leuven, Belgium

Authors and Affiliations

  1. NIKHEF-H, Amsterdam, The Netherlands

    G. W. van Apeldoorn, S. Barshay, D. Harting, D. J. Holthuizen, P. G. Kuijer & B. J. Pijlgroms

  2. University of Helsinki, SF-00170, Helsinki 17, Finland

    V. Karimäki, R. Kimumem & M. Korkea-aho

  3. University of Liverpool, 693BX, Liverpool, UK

    P. Johnson, P. Michaelides, Ch. Michaelidou & D. G. Patel (Visitor)

Authors
  1. G. W. van Apeldoorn
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  2. S. Barshay
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  3. D. Harting
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  4. D. J. Holthuizen
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  5. P. G. Kuijer
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  6. B. J. Pijlgroms
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  7. V. Karimäki
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  8. R. Kimumem
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  9. M. Korkea-aho
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  10. P. Johnson
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  11. P. Michaelides
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  12. Ch. Michaelidou
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  13. D. G. Patel
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Additional information

Part of the research programs of F.O.M. and Z.W.O.

Supported by the S.R.C.

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van Apeldoorn, G.W., Barshay, S., Harting, D. et al. Thermal emission of pions in antiproton-proton annihilation at 12 GeV/c. Z. Phys. C - Particles and Fields 7, 235–239 (1981). https://doi.org/10.1007/BF01436312

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  • DOI: https://doi.org/10.1007/BF01436312

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