Double hypernuclei experiment with hybrid emulsion method (J-PARC E07)

Ekawa, Hiroyuki; Imai, Kenichi

Double hypernuclei are important probes to study the system with strangeness -2. In order to search for double hypernuclei, an upgrade experiment is planned at J-PARC K1.8 beam line. SSDs located the upstream and the downstream of emulsion plates will record $Xi^{-}$ tracks which flight toward emulsion plates precisely. Tracks in SSDs and emulsion will be automatically connected by a hybrid method. Discoveries of more than 10 new double hypernuclear species are expected, which enable us to discuss binding energy in terms of mass number dependence. On the other hand, we will also observe rays from $Xi^{-}$ atoms with a Germanium detector array installed close to the emulsion by tagging $Xi^{-}$ stopped events. Emulsion production has been completely done and a test experiment for some detectors of KURAMA spectrometer was carried out. In this talk, physics motivation and current status of the J-PARC E07 experiment will be reported.

Language	:	English
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Meeting title	:	4th Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and The Physical Society of Japan (Hawaii 2014)
Held date	:	2014/10
Location (city)	:	Waikoloa
Location (country)	:	U.S.A.
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Keywords	:	ハイパー核; J-PARC
Research Facility	:	J-PARC原子核素粒子実験施設
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Cooperating Institute	:	J-PARC E07 Collaboration

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Registration No. : BB20142059
JAEA Abstracts No. :
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