Measurement of the p-pbar -> K s K s reaction from 0.6 to 1.9 GeV

Evangelista, C, Harris, P G and et al, (1997) Measurement of the p-pbar -> K s K s reaction from 0.6 to 1.9 GeV. Physical Review D, 56 (7). pp. 3803-3810. ISSN 1550-7998

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Abstract

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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Philip Harris
Date Deposited: 06 Feb 2012 19:44
Last Modified: 07 Mar 2017 09:34
URI: http://sro.sussex.ac.uk/id/eprint/21959

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