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

H. Ekawa; K. Agari; J. K. Ahn; T. Akaishi; Y. Akazawa; S. Ashikaga; B. Bassalleck; S. Bleser; Y. Endo; Y. Fujikawa; N. Fujioka; M. Fujita; R. Goto; Y. Han; S. Hasegawa; T. Hashimoto; S. H. Hayakawa; T. Hayakawa; E. Hayata; K. Hicks; E. Hirose; M. Hirose; R. Honda; K. Hoshino; S. Hoshino; K. Hosomi; S. H. Hwang; Y. Ichikawa; M. Ichikawa; M. Ieiri; K. Imai; K. Inaba; Y. Ishikawa; A. Iskendir; H. Ito; K. Ito; W. S. Jung; S. Kanatsuki; H. Kanauchi; A. Kasagi; T. Kawai; M. H. Kim; S. H. Kim; S. Kinbara; R. Kiuchi; H. Kobayashi; K. Kobayashi; T. Koike; A. Koshikawa; J. Y. Lee; J. W. Lee; T. L. Ma; S. Y. Matsumoto; M. Minakawa; K. Miwa; A. T. Moe; T. J. Moon; M. Moritsu; Y. Nagase; Y. Nakada; M. Nakagawa; D. Nakashima; K. Nakazawa; T. Nanamura; M. Naruki; A. N.L. Nyaw; Y. Ogura; M. Ohashi; K. Oue; S. Ozawa; J. Pochodzalla; S. Y. Ryu; H. Sako; Y. Sasaki; S. Sato; Y. Sato; F. Schupp; K. Shirotori; M. M. Soe; M. K. Soe; J. Y. Sohn; H. Sugimura; K. N. Suzuki; H. Takahashi; T. Takahashi; Y. Takahashi; T. Takeda; H. Tamura; K. Tanida; A. M.M. Theint; K. T. Tint; Y. Toyama; M. Ukai; E. Umezaki; T. Watabe; K. Watanabe; T. O. Yamamoto; S. B. Yang; C. S. Yoon; J. Yoshida; M. Yoshimoto; D. H. Zhang; Z. Zhang

doi:10.1093/ptep/pty149

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

H. Ekawa, K. Agari, J. K. Ahn, T. Akaishi, Y. Akazawa, S. Ashikaga, B. Bassalleck, S. Bleser, Y. Endo, Y. Fujikawa, N. Fujioka, M. Fujita, R. Goto, Y. Han, S. Hasegawa, T. Hashimoto, S. H. Hayakawa, T. Hayakawa, E. Hayata, K. HicksE. Hirose, M. Hirose, R. Honda, K. Hoshino, S. Hoshino, K. Hosomi, S. H. Hwang, Y. Ichikawa, M. Ichikawa, M. Ieiri, K. Imai, K. Inaba, Y. Ishikawa, A. Iskendir, H. Ito, K. Ito, W. S. Jung, S. Kanatsuki, H. Kanauchi, A. Kasagi, T. Kawai, M. H. Kim, S. H. Kim, S. Kinbara, R. Kiuchi, H. Kobayashi, K. Kobayashi, T. Koike, A. Koshikawa, J. Y. Lee, J. W. Lee, T. L. Ma, S. Y. Matsumoto, M. Minakawa, K. Miwa, A. T. Moe, T. J. Moon, M. Moritsu, Y. Nagase, Y. Nakada, M. Nakagawa, D. Nakashima, K. Nakazawa, T. Nanamura, M. Naruki, A. N.L. Nyaw, Y. Ogura, M. Ohashi, K. Oue, S. Ozawa, J. Pochodzalla, S. Y. Ryu, H. Sako, Y. Sasaki, S. Sato, Y. Sato, F. Schupp, K. Shirotori, M. M. Soe, M. K. Soe, J. Y. Sohn, H. Sugimura, K. N. Suzuki, H. Takahashi, T. Takahashi, Y. Takahashi, T. Takeda, H. Tamura, K. Tanida, A. M.M. Theint, K. T. Tint, Y. Toyama, M. Ukai, E. Umezaki, T. Watabe, K. Watanabe, T. O. Yamamoto, S. B. Yang, C. S. Yoon, J. Yoshida, M. Yoshimoto, D. H. Zhang, Z. Zhang

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Abstract

A double-Λ hypernucleus, ΛΛ Be, 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 _ΛΛ;10 Be, ΛΛ;11 Be, or ΛΛ;12 Be∗ via Xi- capture in 16 O. By assuming capture in the atomic 3D state, the binding energies of two Λ hyperons (B_ΛΛ) of these double-Λ hypernuclei are obtained to be 15.05 pm 0.11,mathrmMeV, 19.07 pm 0.11,mathrmMeV, and 13.68 pm 0.11,mathrmMeV, respectively. Based on the kinematic fitting, ΛΛ;11 Be is the most likely explanation for the observed event.

Original language	English
Article number	021D02
Journal	Progress of Theoretical and Experimental Physics
Volume	2019
Issue number	2
DOIs	https://doi.org/10.1093/ptep/pty149
Publication status	Published - 2019 Feb 1

Keywords

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10.1093/ptep/pty149

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Ekawa, H., Agari, K., Ahn, J. K., Akaishi, T., Akazawa, Y., Ashikaga, S., Bassalleck, B., Bleser, S., Endo, Y., Fujikawa, Y., Fujioka, N., Fujita, M., Goto, R., Han, Y., Hasegawa, S., Hashimoto, T., Hayakawa, S. H., Hayakawa, T., Hayata, E., ... Zhang, Z. (2019). Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment. Progress of Theoretical and Experimental Physics, 2019(2), Article 021D02. https://doi.org/10.1093/ptep/pty149

@article{717ccc756b7d45488a244b62741e200b,

title = "Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment",

abstract = "A double-Λ hypernucleus, ΛΛ Be, 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 _ΛΛ;10 Be, ΛΛ;11 Be, or ΛΛ;12 Be∗ via Xi- capture in 16 O. By assuming capture in the atomic 3D state, the binding energies of two Λ hyperons (B_ΛΛ) of these double-Λ hypernuclei are obtained to be 15.05 pm 0.11,mathrmMeV, 19.07 pm 0.11,mathrmMeV, and 13.68 pm 0.11,mathrmMeV, respectively. Based on the kinematic fitting, ΛΛ;11 Be is the most likely explanation for the observed event.",

keywords = "D14",

author = "H. Ekawa and K. Agari and Ahn, {J. K.} and T. Akaishi and Y. Akazawa and S. Ashikaga and B. Bassalleck and S. Bleser and Y. Endo and Y. Fujikawa and N. Fujioka and M. Fujita and R. Goto and Y. Han and S. Hasegawa and T. Hashimoto and Hayakawa, {S. H.} and T. Hayakawa and E. Hayata and K. Hicks and E. Hirose and M. Hirose and R. Honda and K. Hoshino and S. Hoshino and K. Hosomi and Hwang, {S. H.} and Y. Ichikawa and M. Ichikawa and M. Ieiri and K. Imai and K. Inaba and Y. Ishikawa and A. Iskendir and H. Ito and K. Ito and Jung, {W. S.} and S. Kanatsuki and H. Kanauchi and A. Kasagi and T. Kawai and Kim, {M. H.} and Kim, {S. H.} and S. Kinbara and R. Kiuchi and H. Kobayashi and K. Kobayashi and T. Koike and A. Koshikawa and Lee, {J. Y.} and Lee, {J. W.} and Ma, {T. L.} and Matsumoto, {S. Y.} and M. Minakawa and K. Miwa and Moe, {A. T.} and Moon, {T. J.} and M. Moritsu and Y. Nagase and Y. Nakada and M. Nakagawa and D. Nakashima and K. Nakazawa and T. Nanamura and M. Naruki and Nyaw, {A. N.L.} and Y. Ogura and M. Ohashi and K. Oue and S. Ozawa and J. Pochodzalla and Ryu, {S. Y.} and H. Sako and Y. Sasaki and S. Sato and Y. Sato and F. Schupp and K. Shirotori and Soe, {M. M.} and Soe, {M. K.} and Sohn, {J. Y.} and H. Sugimura and Suzuki, {K. N.} and H. Takahashi and T. Takahashi and Y. Takahashi and T. Takeda and H. Tamura and K. Tanida and Theint, {A. M.M.} and Tint, {K. T.} and Y. Toyama and M. Ukai and E. Umezaki and T. Watabe and K. Watanabe and Yamamoto, {T. O.} and Yang, {S. B.} and Yoon, {C. S.} and J. Yoshida and M. Yoshimoto and Zhang, {D. H.} and Z. Zhang",

note = "Publisher Copyright: {\textcopyright} 2019 The Author(s). Published by Oxford University Press on behalf of the Physical Society of Japan.",

year = "2019",

month = feb,

day = "1",

doi = "10.1093/ptep/pty149",

language = "English",

volume = "2019",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

number = "2",

}

Ekawa, H, Agari, K, Ahn, JK, Akaishi, T, Akazawa, Y, Ashikaga, S, Bassalleck, B, Bleser, S, Endo, Y, Fujikawa, Y, Fujioka, N, Fujita, M, Goto, R, Han, Y, Hasegawa, S, Hashimoto, T, Hayakawa, SH, Hayakawa, T, Hayata, E, Hicks, K, Hirose, E, Hirose, M, Honda, R, Hoshino, K, Hoshino, S, Hosomi, K, Hwang, SH, Ichikawa, Y, Ichikawa, M, Ieiri, M, Imai, K, Inaba, K, Ishikawa, Y, Iskendir, A, Ito, H, Ito, K, Jung, WS, Kanatsuki, S, Kanauchi, H, Kasagi, A, Kawai, T, Kim, MH, Kim, SH, Kinbara, S, Kiuchi, R, Kobayashi, H, Kobayashi, K, Koike, T, Koshikawa, A, Lee, JY, Lee, JW, Ma, TL, Matsumoto, SY, Minakawa, M, Miwa, K, Moe, AT, Moon, TJ, Moritsu, M, Nagase, Y, Nakada, Y, Nakagawa, M, Nakashima, D, Nakazawa, K, Nanamura, T, Naruki, M, Nyaw, ANL, Ogura, Y, Ohashi, M, Oue, K, Ozawa, S, Pochodzalla, J, Ryu, SY, Sako, H, Sasaki, Y, Sato, S, Sato, Y, Schupp, F, Shirotori, K, Soe, MM, Soe, MK, Sohn, JY, Sugimura, H, Suzuki, KN, Takahashi, H, Takahashi, T, Takahashi, Y, Takeda, T, Tamura, H, Tanida, K, Theint, AMM, Tint, KT, Toyama, Y, Ukai, M, Umezaki, E, Watabe, T, Watanabe, K, Yamamoto, TO, Yang, SB, Yoon, CS, Yoshida, J, Yoshimoto, M, Zhang, DH & Zhang, Z 2019, 'Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment', Progress of Theoretical and Experimental Physics, vol. 2019, no. 2, 021D02. https://doi.org/10.1093/ptep/pty149

TY - JOUR

T1 - Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment

AU - Ekawa, H.

AU - Agari, K.

AU - Ahn, J. K.

AU - Akaishi, T.

AU - Akazawa, Y.

AU - Ashikaga, S.

AU - Bassalleck, B.

AU - Bleser, S.

AU - Endo, Y.

AU - Fujikawa, Y.

AU - Fujioka, N.

AU - Fujita, M.

AU - Goto, R.

AU - Han, Y.

AU - Hasegawa, S.

AU - Hashimoto, T.

AU - Hayakawa, S. H.

AU - Hayakawa, T.

AU - Hayata, E.

AU - Hicks, K.

AU - Hirose, E.

AU - Hirose, M.

AU - Honda, R.

AU - Hoshino, K.

AU - Hoshino, S.

AU - Hosomi, K.

AU - Hwang, S. H.

AU - Ichikawa, Y.

AU - Ichikawa, M.

AU - Ieiri, M.

AU - Imai, K.

AU - Inaba, K.

AU - Ishikawa, Y.

AU - Iskendir, A.

AU - Ito, H.

AU - Ito, K.

AU - Jung, W. S.

AU - Kanatsuki, S.

AU - Kanauchi, H.

AU - Kasagi, A.

AU - Kawai, T.

AU - Kim, M. H.

AU - Kim, S. H.

AU - Kinbara, S.

AU - Kiuchi, R.

AU - Kobayashi, H.

AU - Kobayashi, K.

AU - Koike, T.

AU - Koshikawa, A.

AU - Lee, J. Y.

AU - Lee, J. W.

AU - Ma, T. L.

AU - Matsumoto, S. Y.

AU - Minakawa, M.

AU - Miwa, K.

AU - Moe, A. T.

AU - Moon, T. J.

AU - Moritsu, M.

AU - Nagase, Y.

AU - Nakada, Y.

AU - Nakagawa, M.

AU - Nakashima, D.

AU - Nakazawa, K.

AU - Nanamura, T.

AU - Naruki, M.

AU - Nyaw, A. N.L.

AU - Ogura, Y.

AU - Ohashi, M.

AU - Oue, K.

AU - Ozawa, S.

AU - Pochodzalla, J.

AU - Ryu, S. Y.

AU - Sako, H.

AU - Sasaki, Y.

AU - Sato, S.

AU - Sato, Y.

AU - Schupp, F.

AU - Shirotori, K.

AU - Soe, M. M.

AU - Soe, M. K.

AU - Sohn, J. Y.

AU - Sugimura, H.

AU - Suzuki, K. N.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Takahashi, Y.

AU - Takeda, T.

AU - Tamura, H.

AU - Tanida, K.

AU - Theint, A. M.M.

AU - Tint, K. T.

AU - Toyama, Y.

AU - Ukai, M.

AU - Umezaki, E.

AU - Watabe, T.

AU - Watanabe, K.

AU - Yamamoto, T. O.

AU - Yang, S. B.

AU - Yoon, C. S.

AU - Yoshida, J.

AU - Yoshimoto, M.

AU - Zhang, D. H.

AU - Zhang, Z.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - A double-Λ hypernucleus, ΛΛ Be, 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 _ΛΛ;10 Be, ΛΛ;11 Be, or ΛΛ;12 Be∗ via Xi- capture in 16 O. By assuming capture in the atomic 3D state, the binding energies of two Λ hyperons (B_ΛΛ) of these double-Λ hypernuclei are obtained to be 15.05 pm 0.11,mathrmMeV, 19.07 pm 0.11,mathrmMeV, and 13.68 pm 0.11,mathrmMeV, respectively. Based on the kinematic fitting, ΛΛ;11 Be is the most likely explanation for the observed event.

AB - A double-Λ hypernucleus, ΛΛ Be, 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 _ΛΛ;10 Be, ΛΛ;11 Be, or ΛΛ;12 Be∗ via Xi- capture in 16 O. By assuming capture in the atomic 3D state, the binding energies of two Λ hyperons (B_ΛΛ) of these double-Λ hypernuclei are obtained to be 15.05 pm 0.11,mathrmMeV, 19.07 pm 0.11,mathrmMeV, and 13.68 pm 0.11,mathrmMeV, respectively. Based on the kinematic fitting, ΛΛ;11 Be is the most likely explanation for the observed event.

KW - D14

UR - http://www.scopus.com/inward/record.url?scp=85082721683&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85082721683&partnerID=8YFLogxK

U2 - 10.1093/ptep/pty149

DO - 10.1093/ptep/pty149

M3 - Article

AN - SCOPUS:85082721683

SN - 2050-3911

VL - 2019

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 2

M1 - 021D02

ER -

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

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