K$^-$ Meson Production in the Proton-Proton Reaction at 3.67 GeV/c

DISTO collaboration; 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. Froehlich; V. Frolov; R. Garfagnini; D. Gill; A. Grasso; E. Grosse; S. Heinz; V. V. Ivanov; W. W. Jacobs; W. Kuehn; 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

doi:10.1016/s0370-2693(99)01214-9

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arXiv · nucl-ex/9910010

K$^-$ Meson Production in the Proton-Proton Reaction at 3.67 GeV/c

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Abstract

The total cross section of the reaction $pp\to ppK^+K^-$ has been determined for proton--proton reactions with $p_{beam}=3.67 GeV/c$. This represents the first cross section measurement of the $pp \to ppK^-K^+$ channel near threshold, and is equivalent to the inclusive $pp\to ppK^-X$ cross section at this beam momentum. The cross section determined at this beam momentum is about a factor 20 lower than that for inclusive $pp\to ppK^+X$ 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.

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DISTO collaboration, 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. Froehlich, V. Frolov, R. Garfagnini, D. Gill, A. Grasso, E. Grosse, S. Heinz, V. V. Ivanov, W. W. Jacobs, W. Kuehn, 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. 1999-10-11. K$^-$ Meson Production in the Proton-Proton Reaction at 3.67 GeV/c. https://doi.org/10.1016/s0370-2693(99)01214-9

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