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

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

2008-11-26

arxiv.org/abs/0811.4303v1

Phys.Rev.C79:018201,2009

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 4 figures, 1 table; submitted to PRC (rapid communication)

Scientific paper

10.1103/PhysRevC.79.018201

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.

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