Measurement of the pn -&gt; dK+K- total cross section close to threshold

Maeda, Y.; Stein, H. J.; Keshelashvili, I.; Kleber, V.; Pysz, K.; Wuestner, P.; Ströher, H.; Hejny, V.; Kulessa, P.; Mussgiller, A.; Buescher, M.; Nekipelov, M.; Dymov, S.; Mikirtytchiants, S.; Mersmann, T.; Hartmann, M.; Dzyuba, A.; Wilkin, C.; Valdau, Yu.; Koptev, V.; Kacharava, A.; Barsov, S.; Ohm, H.

doi:10.1103/PhysRevC.79.018201

Journal Article

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

Maeda, Y.FZJ* ; Hartmann, M.FZJ* ; Keshelashvili, I.FZJ* ; Barsov, S.FZJ* ; Buescher, M.FZJ* ; Dzyuba, A.FZJ* ; Dymov, S.FZJ* ; Hejny, V.FZJ* ; Kacharava, A.FZJ* ; Kleber, V. ; Koptev, V. ; Kulessa, P.FZJ* ; Mersmann, T. ; Mikirtytchiants, S.FZJ* ; Mussgiller, A. ; Nekipelov, M.FZJ* ; Ohm, H.FZJ* ; Pysz, K.FZJ* ; Stein, H. J.FZJ* ; Ströher, H.FZJ* ; Valdau, Y.FZJ* ; Wilkin, C. ; Wuestner, P.FZJ*

2009
Inst. Woodbury, NY

Physical review / C 79(1), 018201 (2009) [10.1103/PhysRevC.79.018201]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10439 doi:10.1103/PhysRevC.79.018201

Abstract: Measurements of the pd -> p(sp) dK(+) K- reaction, where psp is a spectator proton, have been undertaken at the Cooler Synchrotron COSY-Julich 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 nonresonant quasifree pn -> dK(+) K- total cross section to be deduced up to an excess energy epsilon approximate to 100 MeV. Evidence is found for the effects of K- d and K (K) over bar K final state interactions. The comparison of these data with those of pp -> ppK(+) K- and pp -> dK(+) (K) over bar (0) shows that all the total cross sections are very similar in magnitude.

Keyword(s): channel cross section: energy dependence ; final-state interaction ; p deuteron: inelastic scattering ; K: pair production ; Juelich COSY PS ; p n: interaction ; mass spectrum: (K+ K-) ; p: spectator ; p: momentum spectrum ; magnetic spectrometer ; p deuteron --> deuteron p K+ K- ; 2.65 GeV

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Note: We are grateful for the support offered by the COSY machine crew and other members of the ANKE Collaboration. This work has been partially financed by the BMBF, DFG, Russian Academy of Sciences, HGF-VIQCD, and COSY FFE.

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