Near Threshold K+K- Meson-Pair Production in Proton-Proton Collisions

C. Quentmeier; H. -H. Adam; J. T. Balewski; A. Budzanowski; D. Grzonka; L. Jarczyk; A. Khoukaz; K. Kilian; P. Kowina; N. Lang; T. Lister; P. Moskal; W. Oelert; R. Santo; G. Schepers; T. Sefzick; S. Sewerin; M. Siemaszko; J. Smyrski; A. Strzalkowski; M. Wolke; P. Wuestner; W. Zipper

doi:10.1016/s0370-2693(01)00878-4

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Near Threshold K+K- Meson-Pair Production in Proton-Proton Collisions

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Abstract

The near threshold total cross section and angular distributions of K+K- pair production via the reaction pp --> ppK+K- have been studied at an excess energy of Q = 17 MeV using the COSY-11 facility at the cooler synchrotron COSY. The obtained cross section as well as an upper limit at an excess energy of Q = 3 MeV represent the first measurements on the K+K- production in the region of small excess energies where production via the channel pp --> pp Phi --> ppK+K- is energetically forbidden. The possible influence of a resonant production via intermediate scalar states f0(980) and a0(980) is discussed.

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C. Quentmeier, H. -H. Adam, J. T. Balewski, A. Budzanowski, D. Grzonka, L. Jarczyk, A. Khoukaz, K. Kilian, P. Kowina, N. Lang, T. Lister, P. Moskal, W. Oelert, R. Santo, G. Schepers, T. Sefzick, S. Sewerin, M. Siemaszko, J. Smyrski, A. Strzalkowski, M. Wolke, P. Wuestner, W. Zipper. 2001-07-18. Near Threshold K+K- Meson-Pair Production in Proton-Proton Collisions. https://doi.org/10.1016/s0370-2693(01)00878-4

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