/ Experiment-Nucl arXiv:0811.4303


Measurement of the pn ---> dK+ K- total cross section close to threshold


Maeda, Y. (Osaka U., Res. Ctr. Nucl. Phys.) ; Hartmann, M. (Julich, Forschungszentrum) ; Keshelashvili, I. (Basel U.) ; Barsov, S. (St. Petersburg, INP) ; Buscher, M. (Julich, Forschungszentrum) ; Dzyuba, A. (St. Petersburg, INP) ; Dymov, S. (Erlangen - Nuremberg U.) ; Hejny, V. (Julich, Forschungszentrum) ; Kacharava, A. (Julich, Forschungszentrum) ; Kleber, V. (Bonn U.) ; Koptev, V. (St. Petersburg, INP) ; Kulessa, P. (Cracow, INP) ; Mersmann, T. (Munster U.) ; Mikirtytchiants, S. (St. Petersburg, INP) ; Mussgiller, A. (Erlangen - Nuremberg U.) ; Nekipelov, M. (Julich, Forschungszentrum) ; Ohm, H. (Julich, Forschungszentrum) ; Pysz, K. (Cracow, INP) ; Stein, H.J. (Julich, Forschungszentrum) ; Stroher, H. (Julich, Forschungszentrum) ; Valdau, Yu. (St. Petersburg, INP) ; Wilkin, C. (University Coll. London) ; Wustner, P. (Julich, Forschungszentrum)

Published in: Phys.Rev.
Year: 2009
Vol.: C79
Page No: 018201
Pages: 4

Abstract: Measurements of the pn -> p_spec dK^+K^- reaction, where p_spec is a spectator proton, have been undertaken at the Cooler Synchrotron COSY-Juelich by detecting a fast deuteron in coincidence with a K^+K^- pair in the ANKE facility. Although the proton beam energy was fixed, the moving target neutron allowed values of the non-resonant quasi-free pn -> dK^+K^- total cross section to be deduced up to an excess energy epsilon ~ 100 MeV. Evidence is found for the effects of K^-d and KKbar final state interactions. The comparison of these data with those of pp -> ppK^+K^- and pp -> dK^+Kbar shows that all the total cross sections are very similar in magnitude.

Web-Page: http://durpdg.dur.ac.uk/cgi-hepdata/hepreac/8066868; http://inspirebeta.net/record/803587/files/pig1a.png; http://inspirebeta.net/record/803587/files/pig1b.png; http://inspirebeta.net/record/803587/files/pig2a.png; http://inspirebeta.net/record/803587/files/pig2b.png; http://inspirebeta.net/record/803587/files/pig3.png; http://inspirebeta.net/record/803587/files/pig4.png

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