Direct Observation of Sequential Weak Decay of a Double Hypernucleus

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Authors

S. Aoki · Nagoya University

S. Y. Bahk · Wonkwang University

K.S. Chung · Gyeongsang National University

S.H. Chung · Gyeongsang National University

H. Funahashi · Kyoto University

C. Hahn · Changwon National University

T. Hara · Kobe University

Abstract

We have studied stars in nuclear emulsion due to the capture at rest of the Ξ- hyperons produced in the (<it>K</it>-, <it>K</it>+) reaction. The sequential weak decay of a double hypernucleus (nucleus with <it>S</it> = -2) has been directly observed. The double hypernucleus is assigned as either 10<inf>ΛΛ</inf>Be or 13<inf>ΛΛ</inf>B. This assignment excludes the existence of the <it>H</it> dibaryon lighter than 2203.7 ±0.7 MeV/c2.

Topics & Keywords

Gamma-ray bursts and supernovae Pulsars and Gravitational Waves Research Scientific Research and Discoveries

Publication Details

Published in: Progress of Theoretical Physics

Volume 85, Issue 6, pp. 1287-1298

DOI: 10.1143/ptp.85.1287

Field-Weighted Citation Impact: 24.83

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Direct Observation of Sequential Weak Decay of a Double Hypernucleus

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Abstract

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Publication Details