Double-Λ hypernuclei observed in a hybrid emulsion experiment

J. K. Ahn; H. Akikawa; S. Aoki; K. Arai; S. Y. Bahk; K. M. Baik; B. Bassalleck; J. H. Chung; M. S. Chung; D. H. Davis; T. Fukuda; K. Hoshino; A. Ichikawa; M. Ieiri; K. Imai; K. Itonaga; Y. H. Iwata; Y. S. Iwata; H. Kanda; M. Kaneko; T. Kawai; M. Kawasaki; C. O. Kim; J. Y. Kim; S. H. Kim; S. J. Kim; Y. Kondo; T. Kouketsu; H. N. Kyaw; Y. L. Lee; J. W.C. McNabb; A. A. Min; M. Mitsuhara; K. Miwa; K. Nakazawa; Y. Nagase; C. Nagoshi; Y. Nakanishi; H. Noumi; S. Ogawa; H. Okabe; K. Oyama; B. D. Park; H. M. Park; I. G. Park; J. Parker; Y. S. Ra; J. T. Rhee; A. Rusek; A. Sawa; H. Shibuya; K. S. Sim; P. K. Saha; D. Seki; M. Sekimoto; J. S. Song; H. Takahashi; T. Takahashi; F. Takeutchi; H. Tanaka; K. Tanida; K. T. Tint; J. Tojo; H. Torii; S. Torikai; D. N. Tovee; T. Tsunemi; M. Ukai; N. Ushida; T. Wint; K. Yamamoto; N. Yasuda; J. T. Yang; C. J. Yoon; C. S. Yoon; M. Yosoi; T. Yoshida; L. Zhu

doi:10.1103/PhysRevC.88.014003

Double-Λ hypernuclei observed in a hybrid emulsion experiment

J. K. Ahn, H. Akikawa, S. Aoki, K. Arai, S. Y. Bahk, K. M. Baik, B. Bassalleck, J. H. Chung, M. S. Chung, D. H. Davis, T. Fukuda, K. Hoshino, A. Ichikawa, M. Ieiri, K. Imai, K. Itonaga, Y. H. Iwata, Y. S. Iwata, H. Kanda, M. KanekoT. Kawai, M. Kawasaki, C. O. Kim, J. Y. Kim, S. H. Kim, S. J. Kim, Y. Kondo, T. Kouketsu, H. N. Kyaw, Y. L. Lee, J. W.C. McNabb, A. A. Min, M. Mitsuhara, K. Miwa, K. Nakazawa, Y. Nagase, C. Nagoshi, Y. Nakanishi, H. Noumi, S. Ogawa, H. Okabe, K. Oyama, B. D. Park, H. M. Park, I. G. Park, J. Parker, Y. S. Ra, J. T. Rhee, A. Rusek, A. Sawa, H. Shibuya, K. S. Sim, P. K. Saha, D. Seki, M. Sekimoto, J. S. Song, H. Takahashi, T. Takahashi, F. Takeutchi, H. Tanaka, K. Tanida, K. T. Tint, J. Tojo, H. Torii, S. Torikai, D. N. Tovee, T. Tsunemi, M. Ukai, N. Ushida, T. Wint, K. Yamamoto, N. Yasuda, J. T. Yang, C. J. Yoon, C. S. Yoon, M. Yosoi, T. Yoshida, L. Zhu

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Abstract

A hybrid experiment with nuclear emulsion and scintillating-fiber detectors (KEK-E373) has been performed to search for double-strangeness systems. Among about 103 events of Ξ^- hyperons captured at rest by emulsion nuclei, we have observed four events which clearly show the topology of cascade weak decays of double-Λ hypernuclei including the "Nagara" event. Regarding the Nagara event, values of the two-Λ binding energy (B_ΛΛ) and the Λ-Λ interaction energy (ΔB_ΛΛ) of ΛΛ6He have been revised to 6.91 ± 0.16 and 0.67 ± 0.17 MeV, respectively, due to the recent change of the Ξ^- mass value (Particle Data Group). For another three events, we have determined possible species of double-Λ hypernuclei together with their binding energies.

Original language	English
Article number	014003
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.88.014003
Publication status	Published - Jul 17 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.88.014003

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Ahn, J. K., Akikawa, H., Aoki, S., Arai, K., Bahk, S. Y., Baik, K. M., Bassalleck, B., Chung, J. H., Chung, M. S., Davis, D. H., Fukuda, T., Hoshino, K., Ichikawa, A., Ieiri, M., Imai, K., Itonaga, K., Iwata, Y. H., Iwata, Y. S., Kanda, H., ... Zhu, L. (2013). Double-Λ hypernuclei observed in a hybrid emulsion experiment. Physical Review C - Nuclear Physics, 88(1), Article 014003. https://doi.org/10.1103/PhysRevC.88.014003

Ahn, JK, Akikawa, H, Aoki, S, Arai, K, Bahk, SY, Baik, KM, Bassalleck, B, Chung, JH, Chung, MS, Davis, DH, Fukuda, T, Hoshino, K, Ichikawa, A, Ieiri, M, Imai, K, Itonaga, K, Iwata, YH, Iwata, YS, Kanda, H, Kaneko, M, Kawai, T, Kawasaki, M, Kim, CO, Kim, JY, Kim, SH, Kim, SJ, Kondo, Y, Kouketsu, T, Kyaw, HN, Lee, YL, McNabb, JWC, Min, AA, Mitsuhara, M, Miwa, K, Nakazawa, K, Nagase, Y, Nagoshi, C, Nakanishi, Y, Noumi, H, Ogawa, S, Okabe, H, Oyama, K, Park, BD, Park, HM, Park, IG, Parker, J, Ra, YS, Rhee, JT, Rusek, A, Sawa, A, Shibuya, H, Sim, KS, Saha, PK, Seki, D, Sekimoto, M, Song, JS, Takahashi, H, Takahashi, T, Takeutchi, F, Tanaka, H, Tanida, K, Tint, KT, Tojo, J, Torii, H, Torikai, S, Tovee, DN, Tsunemi, T, Ukai, M, Ushida, N, Wint, T, Yamamoto, K, Yasuda, N, Yang, JT, Yoon, CJ, Yoon, CS, Yosoi, M, Yoshida, T & Zhu, L 2013, 'Double-Λ hypernuclei observed in a hybrid emulsion experiment', Physical Review C - Nuclear Physics, vol. 88, no. 1, 014003. https://doi.org/10.1103/PhysRevC.88.014003

@article{51cc06f0c05b453880fd07514337bc77,

title = "Double-Λ hypernuclei observed in a hybrid emulsion experiment",

abstract = "A hybrid experiment with nuclear emulsion and scintillating-fiber detectors (KEK-E373) has been performed to search for double-strangeness systems. Among about 103 events of Ξ- hyperons captured at rest by emulsion nuclei, we have observed four events which clearly show the topology of cascade weak decays of double-Λ hypernuclei including the {"}Nagara{"} event. Regarding the Nagara event, values of the two-Λ binding energy (BΛΛ) and the Λ-Λ interaction energy (ΔBΛΛ) of ΛΛ6He have been revised to 6.91 ± 0.16 and 0.67 ± 0.17 MeV, respectively, due to the recent change of the Ξ- mass value (Particle Data Group). For another three events, we have determined possible species of double-Λ hypernuclei together with their binding energies.",

author = "Ahn, {J. K.} and H. Akikawa and S. Aoki and K. Arai and Bahk, {S. Y.} and Baik, {K. M.} and B. Bassalleck and Chung, {J. H.} and Chung, {M. S.} and Davis, {D. H.} and T. Fukuda and K. Hoshino and A. Ichikawa and M. Ieiri and K. Imai and K. Itonaga and Iwata, {Y. H.} and Iwata, {Y. S.} and H. Kanda and M. Kaneko and T. Kawai and M. Kawasaki and Kim, {C. O.} and Kim, {J. Y.} and Kim, {S. H.} and Kim, {S. J.} and Y. Kondo and T. Kouketsu and Kyaw, {H. N.} and Lee, {Y. L.} and McNabb, {J. W.C.} and Min, {A. A.} and M. Mitsuhara and K. Miwa and K. Nakazawa and Y. Nagase and C. Nagoshi and Y. Nakanishi and H. Noumi and S. Ogawa and H. Okabe and K. Oyama and Park, {B. D.} and Park, {H. M.} and Park, {I. G.} and J. Parker and Ra, {Y. S.} and Rhee, {J. T.} and A. Rusek and A. Sawa and H. Shibuya and Sim, {K. S.} and Saha, {P. K.} and D. Seki and M. Sekimoto and Song, {J. S.} and H. Takahashi and T. Takahashi and F. Takeutchi and H. Tanaka and K. Tanida and Tint, {K. T.} and J. Tojo and H. Torii and S. Torikai and Tovee, {D. N.} and T. Tsunemi and M. Ukai and N. Ushida and T. Wint and K. Yamamoto and N. Yasuda and Yang, {J. T.} and Yoon, {C. J.} and Yoon, {C. S.} and M. Yosoi and T. Yoshida and L. Zhu",

year = "2013",

month = jul,

day = "17",

doi = "10.1103/PhysRevC.88.014003",

language = "English",

volume = "88",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Double-Λ hypernuclei observed in a hybrid emulsion experiment

AU - Ahn, J. K.

AU - Akikawa, H.

AU - Aoki, S.

AU - Arai, K.

AU - Bahk, S. Y.

AU - Baik, K. M.

AU - Bassalleck, B.

AU - Chung, J. H.

AU - Chung, M. S.

AU - Davis, D. H.

AU - Fukuda, T.

AU - Hoshino, K.

AU - Ichikawa, A.

AU - Ieiri, M.

AU - Imai, K.

AU - Itonaga, K.

AU - Iwata, Y. H.

AU - Iwata, Y. S.

AU - Kanda, H.

AU - Kaneko, M.

AU - Kawai, T.

AU - Kawasaki, M.

AU - Kim, C. O.

AU - Kim, J. Y.

AU - Kim, S. H.

AU - Kim, S. J.

AU - Kondo, Y.

AU - Kouketsu, T.

AU - Kyaw, H. N.

AU - Lee, Y. L.

AU - McNabb, J. W.C.

AU - Min, A. A.

AU - Mitsuhara, M.

AU - Miwa, K.

AU - Nakazawa, K.

AU - Nagase, Y.

AU - Nagoshi, C.

AU - Nakanishi, Y.

AU - Noumi, H.

AU - Ogawa, S.

AU - Okabe, H.

AU - Oyama, K.

AU - Park, B. D.

AU - Park, H. M.

AU - Park, I. G.

AU - Parker, J.

AU - Ra, Y. S.

AU - Rhee, J. T.

AU - Rusek, A.

AU - Sawa, A.

AU - Shibuya, H.

AU - Sim, K. S.

AU - Saha, P. K.

AU - Seki, D.

AU - Sekimoto, M.

AU - Song, J. S.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Takeutchi, F.

AU - Tanaka, H.

AU - Tanida, K.

AU - Tint, K. T.

AU - Tojo, J.

AU - Torii, H.

AU - Torikai, S.

AU - Tovee, D. N.

AU - Tsunemi, T.

AU - Ukai, M.

AU - Ushida, N.

AU - Wint, T.

AU - Yamamoto, K.

AU - Yasuda, N.

AU - Yang, J. T.

AU - Yoon, C. J.

AU - Yoon, C. S.

AU - Yosoi, M.

AU - Yoshida, T.

AU - Zhu, L.

PY - 2013/7/17

Y1 - 2013/7/17

N2 - A hybrid experiment with nuclear emulsion and scintillating-fiber detectors (KEK-E373) has been performed to search for double-strangeness systems. Among about 103 events of Ξ- hyperons captured at rest by emulsion nuclei, we have observed four events which clearly show the topology of cascade weak decays of double-Λ hypernuclei including the "Nagara" event. Regarding the Nagara event, values of the two-Λ binding energy (BΛΛ) and the Λ-Λ interaction energy (ΔBΛΛ) of ΛΛ6He have been revised to 6.91 ± 0.16 and 0.67 ± 0.17 MeV, respectively, due to the recent change of the Ξ- mass value (Particle Data Group). For another three events, we have determined possible species of double-Λ hypernuclei together with their binding energies.

AB - A hybrid experiment with nuclear emulsion and scintillating-fiber detectors (KEK-E373) has been performed to search for double-strangeness systems. Among about 103 events of Ξ- hyperons captured at rest by emulsion nuclei, we have observed four events which clearly show the topology of cascade weak decays of double-Λ hypernuclei including the "Nagara" event. Regarding the Nagara event, values of the two-Λ binding energy (BΛΛ) and the Λ-Λ interaction energy (ΔBΛΛ) of ΛΛ6He have been revised to 6.91 ± 0.16 and 0.67 ± 0.17 MeV, respectively, due to the recent change of the Ξ- mass value (Particle Data Group). For another three events, we have determined possible species of double-Λ hypernuclei together with their binding energies.

UR - http://www.scopus.com/inward/record.url?scp=84881137225&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881137225&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.88.014003

DO - 10.1103/PhysRevC.88.014003

M3 - Article

AN - SCOPUS:84881137225

SN - 0556-2813

VL - 88

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 1

M1 - 014003

ER -

Double-Λ hypernuclei observed in a hybrid emulsion experiment

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