Search for the weak decay of a lightly bound H-0 dibaryon

Citation
A. Alavi-harati et al., Search for the weak decay of a lightly bound H-0 dibaryon, PHYS REV L, 84(12), 2000, pp. 2593-2597
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
84
Issue
12
Year of publication
2000
Pages
2593 - 2597
Database
ISI
SICI code
0031-9007(20000320)84:12<2593:SFTWDO>2.0.ZU;2-L
Abstract
We present results of a search fur a new form of hadronic matter, a six-qua rk, dibaryon state called the H-0, a state predicted to exist in several th eoretical models. Analyzing data collected by experiment E799-II at Fermila b, we searched for the decay H-0 --> Lambda p pi(-) and found no candidate events. We place an upper limit on [B(H-0 --> Lambda p pi(-))d sigma(H)/d O mega]/(d sigma equivalent to/d Omega) and; in the context of published mode ls, exclude the region of lightly bound mass states just below the Lambda L ambda mass threshold, 2.194 < M-H < 2.231 GeV/c(2), with lifetimes from sim ilar to 5 X 10(-10) sec to similar to 1 X 10(-3) sec.