Measurement of the pbar p -> Ks Ks Reaction from 0.6 to 1.9 GeV/c

Details Measurement of the pbar p -> Ks Ks Reaction from 0.6 to 1.9 GeV/c Measurement of the pbar p -> Ks Ks Reaction from 0.6 to 1.9 GeV/c

1997-07-28

arxiv.org/abs/hep-ex/9707041v1

Phys.Rev.D56:3803-3810,1997

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, Latex, to be published in Phys Rev D (Oct 97)

Scientific paper

10.1103/PhysRevD.56.3803

The pbar p -> Ks Ks -> 4pi+/- cross section was measured at incident antiproton momenta between 0.6 and 1.9 GeV/c using the CERN Low Energy Antiproton Ring (LEAR). This investigation was part of a systematic study of in-flight antiproton-proton annihilations into two-neutral-meson final states in a search for hadronic resonances. A coarse scan of the pbar p -> Ks Ks cross section as a function of center-of-mass energy between 1.964 and 2.395 GeV/c^2 and a fine scan of the region surrounding the Xi(2220) are presented. Upper limits on the product branching ratio BR(Xi -> pbar p)BR(Xi -> Ks Ks) are determined for a wide range of mass and width assumptions based on the non-observation of the Xi(2220). A rise in the pbar p -> Ks Ks cross section is observed near 2.15 GeV/c^2, which is consistent with the f2(2150) resonance.

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