Production of K⁺K⁻ pairs in proton-proton collisions at 2.83 GeV

Ye, Q. J.; Hartmann, M.; Maeda, Y.; Barsov, S.; Büscher, M.; Chiladze, D.; Dymov, S.; Dzyuba, A.; Gao, H.; Gebel, R.; Hejny, V.; Kacharava, A.; Keshelashvili, I.; Kiselev, Yu. T.; Khoukaz, A.; Koptev, V. P.; Kulessa, P.; Kulikov, A.; Lorentz, B.; Mersmann, T.; Merzliakov, S.; Mikirtytchiants, S.; Nekipelov, M.; Ohm, H.; Paryev, E. Ya.; Polyanskiy, A.; Serdyuk, V.; Stein, H. J.; Ströher, H.; Trusov, S.; Valdau, Yu.; Wilkin, C.; Wüstner, P.

doi:10.1103/PhysRevC.85.035211

Title: Production of K⁺K⁻ pairs in proton-proton collisions at 2.83 GeV

Journal Article · Fri Mar 30 00:00:00 EDT 2012 · Physical Review. C. Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.85.035211· OSTI ID:1098616

Ye, Q. J.; Hartmann, M.; Maeda, Y.; Barsov, S.; Büscher, M.; Chiladze, D.; Dymov, S.; Dzyuba, A.; Gao, H.; Gebel, R.; Hejny, V.; Kacharava, A.; Keshelashvili, I.; Kiselev, Yu. T.; Khoukaz, A.; Koptev, V. P.; Kulessa, P.; Kulikov, A.; Lorentz, B.; Mersmann, T. more »

Differential and total cross sections for the pp→ppK⁺K⁻ reaction have been measured at a proton beam energy of 2.83 GeV using the COSY-ANKE magnetic spectrometer. Detailed model descriptions fitted to a variety of one-dimensional distributions permit the separation of the pp→ppφ cross section from that of non-φ production. The differential spectra show that higher partial waves represent the majority of the pp→ppφ total cross section at an excess energy of 76 MeV, whose energy dependence would then seem to require some s-wave φp enhancement near threshold. The non-φ data can be described in terms of the combined effects of two-body final state interactions using the same effective scattering parameters determined from lower energy data.

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Sponsoring Organization:: USDOE

OSTI ID:: 1098616

Journal Information:: Physical Review. C. Nuclear Physics, Journal Name: Physical Review. C. Nuclear Physics Vol. 85 Journal Issue: 3; ISSN 0556-2813

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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References (45)

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