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Asymmetries in the Non-Mesonic Weak Decay of Polarized Lambda-Hypernuclei

W. M. Alberico·G. Garbarino·A. Parreno·A. Ramos
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Abstract

The non-mesonic weak decay of polarized Lambda-hypernuclei is studied for the first time by taking into account, with a Monte Carlo intranuclear cascade code, the nucleon final state interactions. A one-meson-exchange model is employed to describe the Lambda N-> n N processes in a finite nucleus framework. The relationship between the intrinsic Lambda asymmetry parameter a_Λand the asymmetry a^M_Λaccessible in experiments is discussed. A strong dependence of a^M_Λon nucleon final state interactions and detection threshold is obtained. Our results for a^M_Λare consistent with ^{11}_ΛB and ^{12}_ΛC data but disagree with observations in ^5_ΛHe.

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W. M. Alberico, G. Garbarino, A. Parreno, A. Ramos. 2004-10-26. Asymmetries in the Non-Mesonic Weak Decay of Polarized Lambda-Hypernuclei. https://doi.org/10.1103/physrevlett.94.082501

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