CERN Accelerating science

Article
Report number	hep-ex/0107007
Title	Measurement of the $\overline{p}p \to K_S K_S \eta$ cross section at beam momenta in the regions of 1.45 and 1.7 GeV/c
Author(s)	Barnes, P.D. (Carnegie Mellon U.) ; Bunker, B. (Illinois U., Urbana (main)) ; Dennert, H. (Erlangen - Nuremberg U.) ; Eisenstein, R.A. (Illinois U., Urbana (main)) ; Eyrich, W. (Erlangen - Nuremberg U.) ; Fischer, H. (Freiburg U.) ; Franklin, G. (Carnegie Mellon U.) ; Franz, J. (Freiburg U.) ; Geyer, R. (Julich, Forschungszentrum) ; Harris, P. (Illinois U., Urbana (main)) ; Hauffe, J. (Erlangen - Nuremberg U.) ; Hertzog, D. (Illinois U., Urbana (main)) ; Johansson, T. (Uppsala U.) ; Jones, T. (Illinois U., Urbana (main)) ; Kilian, K. (Julich, Forschungszentrum) ; Oelert, W. (Julich, Forschungszentrum) ; Pomp, S. (Uppsala U.) ; Quinn, B. (Carnegie Mellon U.) ; Röhrich, K. (Julich, Forschungszentrum) ; Rössle, E. (Freiburg U.) ; Sachs, K. (Julich, Forschungszentrum) ; Schmitt, H. (Freiburg U.) ; Sefzick, T. (Julich, Forschungszentrum) ; Seydoux, J. (Carnegie Mellon U.) ; Stinzing, F. (Erlangen - Nuremberg U.) ; Tayloe, R. (Illinois U., Urbana (main)) ; Todenhagen, R. (Freiburg U.) ; Traneus, E. (Uppsala U.) ; Wirth, S. (Erlangen - Nuremberg U.)
Publication	2001
Imprint	2001-07
Number of pages	10
Note	10 pages, 6 figures, LaTeX, less figures to save space, adapted text
In:	Phys. Lett. B 516 (2001) 257-263
DOI	10.1016/S0370-2693(01)00958-3
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LEAR ; PS185
Abstract	The PS185 experiment at LEAR/CERN has investigated strangeness production in antiproton-proton collisions with final states such as $\overline{\Lambda} \Lambda$, $\overline{\Sigma}^0 \Lambda + c.c$, $\overline{\Sigma^+} \Sigma^+$, $\overline{\Sigma^-} \Sigma^-$ and $K_S K_S$. Results are presented from a study of about 32,000 {$K_S K_S X$} events obtained at several antiproton momenta in the regions of 1.45 and 1.7 GeV/c. The $\overline{p} p \to K_S K_S \eta$ cross sections extracted at these momenta constitute the first measurement of this reaction in flight and are broadly consistent with expectations of a phase-space extrapolation of branching ratios from annihilation at rest.
Copyright/License	Elsevier Science B.V.

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