Abstract
We study the production of neutron-rich hypernuclei 12Λ Be, 16Λ C, and 10Λ Li by the (π −, K +) and (K −, π +) reactions in flight and treat two different mechanisms of production. The first mechanism is a two-step process with meson charge exchange (e.g., π − p → π 0 n, π 0 p → K +Λ). The other mechanism is one-step production (π − p → K +Σ−) proceeding via a small Σ− component, arising in Λ hypernuclei due to ΛN–ΣN coupling, as a doorway state. Typically, the two-step mechanism is more productive. The forward differential cross section of the 10B(π −,K +) reaction is about 70 nb/sr at an incident momentum of 1.05 GeV/c. On the other hand, the one-step process can serve as a direct measurement of the Σ admixture if the two-step contribution is suppressed by a suitable choice of the reaction kinematics.
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From Yadernaya Fizika, Vol. 66, No. 9, 2003, pp. 1699–1702.
Original English Text Copyright © 2003 by Tretyakova, Lanskoy.
This article was submitted by the authors in English.
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Tretyakova, T.Y., Lanskoy, D.E. Production of exotic Λ hypernuclei via mesonic beams. Phys. Atom. Nuclei 66, 1651–1654 (2003). https://doi.org/10.1134/1.1611576
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DOI: https://doi.org/10.1134/1.1611576