H-dibaryon and hypernucleus formation in the Ξ-12C reaction at rest

KEK-PS E224 Collaboration; Ahn, J.K.; Aoki, S.; Chung, K. S.; Chung, M. S.; En'yo, H.; Fukuda, T.; Funahashi, H.; Goto, Y.; Higashi, A.; Ieiri, M.; Iijima, T.; Iinuma, Masataka; Imai, K.; Itow, Y.; Lee, J. M.; Makino, S.; Masaike, A.; Matsuda, Y.; Matsuyama, Y.; Mihara, S.; Nagoshi, C.; Nomura, I.; Park, I. S.; Saito, N.; Sekimoto, M.; Shin, Y. M.; Sim, K. S.; Susukita, R.; Takashima, R.; Takeutchi, F.; Tlustý, P.; Weibe, S.; Yokkaichi, S.; Yoshida, K.; Yoshida, M.; Yoshida, T.; Yamashita, S.

doi:10.1103/PhysRevC.62.055201

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H-dibaryon and hypernucleus formation in the Ξ-12C reaction at rest

https://hiroshima.repo.nii.ac.jp/records/2008310

名前 / ファイル	ライセンス	アクション
PhysRevC_62_055201.pdf (265.9 KB)

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デフォルトアイテムタイプ_（フル）(1)

公開日

2023-03-18

タイトル

H-dibaryon and hypernucleus formation in the Ξ-12C reaction at rest

言語

作成者

KEK-PS E224 Collaboration
Ahn, J.K.
Aoki, S.
Chung, K. S.
Chung, M. S.
En'yo, H.
Fukuda, T.
Funahashi, H.
Goto, Y.
Higashi, A.
Ieiri, M.
Iijima, T.
Iinuma, Masataka
Imai, K.
Itow, Y.
Lee, J. M.
Makino, S.
Masaike, A.
Matsuda, Y.
Matsuyama, Y.
Mihara, S.
Nagoshi, C.
Nomura, I.
Park, I. S.
Saito, N.
Sekimoto, M.
Shin, Y. M.
Sim, K. S.
Susukita, R.
Takashima, R.
Takeutchi, F.
Tlustý, P.
Weibe, S.
Yokkaichi, S.
Yoshida, K.
Yoshida, M.
Yoshida, T.
Yamashita, S.

アクセス権

open access

アクセス権URI

http://purl.org/coar/access_right/c_abf2

権利情報

内容記述

Stopped-Ξ-12C reactions have been investigated with respect to H-dibaryon and hypernucleus formation with a scintillating fiber detector. Out of 5.5×103 tagged Ξ- particles via the (K-,K+) reaction we obtained 72 stopping Ξ- events with 6.7+1.1-1.4 background events after imposing kinematic constraints. Hypernuclear production has been studied by observing free Λ decays in the stopped-Ξ- reactions. From the observed Λ momentum spectrum, we have found the hypernuclear production rates to be 18±13, 65±6, and 17±12 % for double/twin-A hypernucleus, single-Λ hypernucleus, and no hypernucleus cases, respectively. With the same sample, we set upper limits on R (stopped-Ξ-12C→HX /stopped-Ξ-12C→ all) for H decaying into Λn, Σ-p, and Λpπ-, for H masses just below ΛΛ mass threshold and for H lifetime range 10-11≤τH≤10-8 s. The upper limits on R are ∼0.1-0.2, assuming all of the H decay into each decay mode. Our results give a tight constraint on the existence of the bound H, in comparison with the theoretical estimates of Aerts and Dover, albeit with different target nuclei.

言語

出版者

American Physical Society

言語

eng

資源タイプ

資源タイプ識別子

http://purl.org/coar/resource_type/c_6501

資源タイプ

journal article

出版タイプ

VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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Ver.1

2025-02-21 04:19:41.456129

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インデックスツリー

アイテム

H-dibaryon and hypernucleus formation in the Ξ-12C reaction at rest

× KEK-PS E224 Collaboration

× Ahn, J.K.

× Aoki, S.

× Chung, K. S.

× Chung, M. S.

× En'yo, H.

× Fukuda, T.

× Funahashi, H.

× Goto, Y.

× Higashi, A.

× Ieiri, M.

× Iijima, T.

× Iinuma, Masataka

× Imai, K.

× Itow, Y.

× Lee, J. M.

× Makino, S.

× Masaike, A.

× Matsuda, Y.

× Matsuyama, Y.

× Mihara, S.

× Nagoshi, C.

× Nomura, I.

× Park, I. S.

× Saito, N.

× Sekimoto, M.

× Shin, Y. M.

× Sim, K. S.

× Susukita, R.

× Takashima, R.

× Takeutchi, F.

× Tlustý, P.

× Weibe, S.

× Yokkaichi, S.

× Yoshida, K.

× Yoshida, M.

× Yoshida, T.

× Yamashita, S.

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