Decay asymmetry in non-mesonic weak decay of light Λ -hypernuclei

T Maruta ,Y Okayasu,K Tanida,S Ajimura,H Park,A Banu,M J Kim,M Sekimoto,Yasuhiro Miyake ,Pranab Saha ,J H Kim ,H Bhang ,Y Miura ,T Takahashi ,B H Kang ,E H Kim ,H Outa ,S N Nakamura ,H Noumi ,In-Kyeong Hwang ,Osamu Hashimoto ,T Nagae ,A Toyoda ,Y Sato ,S Kameoka ,H Tamura ,T Fukuda ,K Tsukada ,Kazuo Aoki ,S Okada ,Makoto Nakamura ,T Watanabe

doi:10.1140/epja/i2007-10478-2

Decay asymmetry in non-mesonic weak decay of light Λ -hypernuclei

T Maruta , Y Okayasu + Show 30 more

https://doi.org/10.1140/epja/i2007-10478-2

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Journal: The European physical journal. A, Hadrons and nuclei	Publication Date: Sep 1, 2007
Citations: 9

Affiliation: High Energy Accelerator Research Organization, Tohoku University, Kyoto University, Osaka University, Korea Research Institute of Standards and Science, Seoul National University, The University of Tokyo, Japan Atomic Energy Agency, RIKEN, Osaka Electro-Communication University, Gifu University

#Non-mesonic Weak Decay #SKS Spectrometer + Show 8 more

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Abstract

The proton decay asymmetry, α p NM , of the polarized Λ-hypernuclei, Λ 5 He, Λ 12 C and Λ 11 B, has been investigated to understand the reaction mechanism of the non-mesonic weak-decay process. These Λ-hypernuclei were produced in the highest statistics ever via the (π +, K +) reaction at 1.05 GeV/c by using the SKS spectrometer at KEK 12 GeV PS. The results show that the α p NM are very small for these s-shell and p-shell hypernuclei.

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