Study of the near threshold pp-->ppK+K- reaction in view of the K+K final state interaction

Details Study of the near threshold pp-->ppK+K- reaction in view of the K+K final state interaction Study of the near threshold pp-->ppK+K- reaction in view of the K+K final state interaction

2010-03-23

arxiv.org/abs/1003.4504v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk at the Excited QCD 2010 Workshop, 31 January-6 February 2010, Stara Lesna, Slovakia, 6 pages

Scientific paper

Measurements of the pp-->ppK+K- reaction, performed near the kinematical threshold with the experiment COSY-11 at the Cooler Synchrotron COSY, reveal a significant discrepancy between obtained excitation function and theoretical expectations neglecting interactions of kaons. In order to deepen our knowledge about the low energy dynamics of the ppKK system we investigated population of events for the pp-->ppK+K- reaction as a function of the invariant masses of two particle subsystems. Based for the first time on the low-energy K+K- invariant mass distributions and the generalized Dalitz plot analysis, we estimated the scattering length for the K+K- interaction.

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