THE LIFETIME OF THE Λ - HYPERON BOUND IN HYPERNUCLEI PRODUCED BY p+U COLLISIONS
نویسنده
چکیده
The nonmesonic decay of the Λ–hyperon has been investigated by observation of delayed fission from heavy hypernuclei produced in proton – U collisions at Tp=1.9 GeV. The lifetime of heavy hypernuclei with masses A≈220 obtained in the present work, i.e. τΛ = [138± 6(stat.)± 17(syst.)] ps, is the most accurate result for heavy hypernuclei produced in proton and antiproton induced collisions on a U target so far.
منابع مشابه
Nonmesonic decay of the Λ-hyperon in hypernuclei produced by p+Au collisions
The lifetime of the Λ-hyperon for the nonmesonic decay ΛN → NN has been determined by a measurement at COSY Jülich of the delayed fission of heavy hypernuclei produced in proton Au collisions at Tp=1.9 GeV. It is found that heavy hypernuclei with mass numbers A≈(180±5) and atomic numbers Z≈(74±2) fission with a lifetime τΛ=130 ± 13(stat.) ± 15(syst.) ps. This value together with the results obt...
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