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K- meson production in the proton-proton reaction at 3.67 GeV/c

  • F. Balestra
  • , Y. Bedfer
  • , R. Bertini
  • , L. C. Bland
  • , A. Brenschede
  • , F. Brochard
  • , M. P. Bussa
  • , V. Tchalyshev
  • , Seonho Choi
  • , M. Debowski
  • , M. Dzemidzic
  • , J. Cl Faivre
  • , I. V. Falomkin
  • , L. Fava
  • , L. Ferrero
  • , J. Foryciarz
  • , I. Fröhlich
  • , V. Frolov
  • , R. Garfagnini
  • , D. Gill
  • A. Grasso, E. Grosse, S. Heinz, V. V. Ivanov, W. W. Jacobs, W. Kühn, A. Maggiora, M. Maggiora, A. Manara, D. Panzieri, H. W. Pfaff, G. Piragino, G. B. Pontecorvo, A. Popov, J. Ritman, P. Salabura, F. Tosello, S. E. Vigdor, G. Zosi

Research output: Contribution to journal › Article › peer-review

Abstract

The total cross section of the reaction pp → ppK+K- has been determined for proton-proton reactions with pbeam = 3.67GeV/c. This represents the first cross section measurement of the pp → ppK-K+ channel near threshold, and is equivalent to the inclusive pp → ppK-X cross section at this beam momentum. The cross section determined at this beam momentum is about a factor 20 lower than that for inclusive pp → ppK+X meson production at the same CM energy above the corresponding threshold. This large difference in the K+ and K- meson inclusive production cross sections in proton-proton reactions is in strong contrast to cross sections measured in sub-threshold heavy ion collisions, which are similar in magnitude at the same energy per nucleon below the respective thresholds.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume468
Issue number1-2
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Antikaon
  • Near-threshold meson production

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