Quark States near a Threshold and the Unstable H-dibaryon

Details Quark States near a Threshold and the Unstable H-dibaryon Quark States near a Threshold and the Unstable H-dibaryon

1997-05-23

arxiv.org/abs/hep-ph/9705407v1

Nucl.Phys.A625:167-191,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 7 figures, RevTeX, uses aps.sty, fps.sty

Scientific paper

10.1016/S0375-9474(97)81459-5

We consider the interplay of a quark state and a hadronic threshold in the framework of the P-matrix formalism, which is reviewed and extended for use together with conventional methods of computing quark-gluon dynamics. We provide a quantitative dynamical interpretation of the reduced R or K matrices and their poles that suggests a natural classification of threshold phenomena. At a threshold with a quark state close to it up to three S-matrix poles can be found. The scattering amplitudes for the corresponding cases are discussed. Our analysis is applied to make an outlook for experimental observation of the doubly strange H-dibaryon if it is not stable to strong decays.

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