Search for the Weak Decay of a Lightly Bound H Dibaryon

Details Search for the Weak Decay of a Lightly Bound H Dibaryon Search for the Weak Decay of a Lightly Bound H Dibaryon

1999-10-15

arxiv.org/abs/hep-ex/9910030v1

Phys.Rev.Lett.84:2593-2597,2000

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 5 figures. Submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.84.2593

We present results of a search for a neutral, six-quark, dibaryon state called the \h, a state predicted to exist in several theoretical models. Observation of such a state would signal the discovery of a new form of hadronic matter. Analyzing data collected by experiment E799-II, using the KTeV detector at Fermilab, we searched for the decay $H^0 \to \Lambda p \piminus$ and found no candidate events. We exclude the region of lightly bound mass states just below the $\Lambda\Lambda$ mass threshold, $2.194~\gev < M_H < 2.231$~\gev, with lifetimes from $\sim$$ 5 \times 10^{-10}$~sec to $\sim$$1 \times 10^{-3}$~sec.

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