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Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment

http://hdl.handle.net/20.500.12678/0000000758
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de49d22f-931a-4b60-acb7-c67d07ed6f35
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Observation Observation of a Be double-Lambda hypernucleus.pdf (3056 Kb)
Publication type
Journal article
Upload type
Publication
Title
Title Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment
Language en
Publication date 2019
Authors
Ekawa, H.
Nakazawa, K.
Khin Than Tint, et.al
Description
A double-Λ hypernucleus, ΛΛBe⁠, was observed by the J-PARC E07 Collaboration in nuclear emulsions tagged by the (⁠K−,K+⁠) reaction. This event was interpreted as the production and decay of 10ΛΛBe⁠, 11ΛΛBe⁠, or 12ΛΛBe∗ via Ξ− capture in 16O⁠. By assuming capture in the atomic 3D state, the binding energies of two Λ hyperons (⁠BΛΛ⁠) of these double-Λ hypernuclei are obtained to be 15.05±0.11MeV⁠, 19.07±0.11MeV⁠, and 13.68±0.11MeV⁠, respectively. Based on the kinematic fitting, 11ΛΛBe
is the most likely explanation for the observed event.
Keywords
double-Lambda
Identifier https://umoar.mu.edu.mm/handle/123456789/376
Journal articles
2
Progress of Theoretical and Experimental Physics
2019
Conference papaers
Books/reports/chapters
Thesis/dissertations
0
0
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