Münster 2002 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
HK: Physik der Hadronen und Kerne
HK 5: Electromagnetic and Hadronic Probes I
HK 5.7: Talk
Monday, March 11, 2002, 18:15–18:30, D
Two Kaon Production at the φ - Meson Threshold with the MOMO-Experiment at COSY — •R. Jahn1, F. Bellemann1, A. Berg1, J. Bisplinghoff1, G. Bohlscheid1, J. Ernst1, F. Hinterberger1, R. Ibald1, L. Jarczyk2, R. Joosten1, A. Kozela3, H. Machner4, A. Magiera2, R. Maschuw1, T. Mayer-Kuckuk1, G. Mertler1, J. Munkel1, P.v. Rossen4, H. Schnitker1, J. Smyrski2, A. Strzalkowski2, and R. Tölle4 — 1Institut für Strahlen- und Kernphysik, Universität Bonn — 2Institute of Physics, Jagellonian University Cracow, Poland — 3Institute of Nuclear Physics, Cracow, Poland — 4Institut für Kernphysik, Forschungszentrum Jülich
The reaction pd → 3He K+ K− was measured
kinematically complete at the COSY synchroton at beam
momenta near 2.6 GeV/c corresponding to
c.m. energies above the K+ K− threshold of 35 MeV, 40 MeV
and 56 MeV. In total, some 6000 kaon pairs could be uniquely
identified. The KK mass spectra are consistent with phase space
topped by a clear signal of the φ meson, even at 35 MeV, which
corresponds to just 2.8 MeV avbove the φ threshold. In contrast
to the MOMO two pion production data measured with
the reaction pd → 3He π+ π−
(Phys. Rev. C60 (1999) 061002) the two kaon angular
distributions indicate pure s-wave production. The obtained cross
sections, ranging into the sub-nanobarn domain, will be presented
and discussed.
Supported by the BMBF.