Observation of a 6∧∧ He double hypernucleus

H. Takahashi; 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; Y. H. Iwata; Y. S. Iwata; H. Kanda; M. Kaneko; T. Kawai; M. Kawasaki; C. O. Kim; J. Y. Kim; S. J. Kim; S. H. Kim; Y. Kondo; T. Kouketsu; Y. Lee; J. W.C. Mc Nabb; M. Mitsuhara; Y. Nagase; C. Nagoshi; K. Nakazawa; H. Noumi; S. Ogawa; H. Okabe; K. Oyama; H. M. Park; I. G. Park; J. Parker; Y. S. Ra; J. T. Rhee; A. Rusek; H. Shibuya; K. S. Sim; P. K. Saha; D. Seki; M. Sekimoto; J. S. Song; T. Takahashi; F. Takeutchi; H. Tanaka; K. Tanida; J. Tojo; H. Torii; S. Torikai; D. N. Tovee; N. Ushida; K. Yamamoto; N. Yasuda; J. T. Yang; C. J. Yoon; C. S. Yoon; M. Yosoi; T. Yoshida; L. Zhu

doi:10.1103/PhysRevLett.87.212502

Observation of a ⁶_∧∧ He double hypernucleus

H. Takahashi, 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, Y. H. Iwata, Y. S. Iwata, H. Kanda, M. KanekoT. Kawai, M. Kawasaki, C. O. Kim, J. Y. Kim, S. J. Kim, S. H. Kim, Y. Kondo, T. Kouketsu, Y. Lee, J. W.C. Mc Nabb, M. Mitsuhara, Y. Nagase, C. Nagoshi, K. Nakazawa, H. Noumi, S. Ogawa, H. Okabe, K. Oyama, H. M. Park, I. G. Park, J. Parker, Y. S. Ra, J. T. Rhee, A. Rusek, H. Shibuya, K. S. Sim, P. K. Saha, D. Seki, M. Sekimoto, J. S. Song, T. Takahashi, F. Takeutchi, H. Tanaka, K. Tanida, J. Tojo, H. Torii, S. Torikai, D. N. Tovee, N. Ushida, 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 double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of ⁶_{∧ ∧} He emitted from a hyperon nuclear capture at rest. The mas of ⁶_∧∧ He and the ∧ − ∧ interaction energy ΔB_{∧ ∧} have been measured for the first time devoid of the ambiguities due to the possibilities of excited states. The value of ΔB_∧∧ is 1.01 ± 0.20^{+ 0.018}_-0.11MeV. This demonstrates that the ∧ − ∧ interaction is weakly attractive.

Original language	English
Pages (from-to)	212502
Number of pages	1
Journal	Physical review letters
Volume	87
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.87.212502
Publication status	Published - 2001 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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Takahashi, H., 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., Iwata, Y. H., Iwata, Y. S., Kanda, H., ... Zhu, L. (2001). Observation of a ⁶_∧∧ He double hypernucleus. Physical review letters, 87(21), 212502. https://doi.org/10.1103/PhysRevLett.87.212502

Takahashi, H, 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, Iwata, YH, Iwata, YS, Kanda, H, Kaneko, M, Kawai, T, Kawasaki, M, Kim, CO, Kim, JY, Kim, SJ, Kim, SH, Kondo, Y, Kouketsu, T, Lee, Y, Mc Nabb, JWC, Mitsuhara, M, Nagase, Y, Nagoshi, C, Nakazawa, K, Noumi, H, Ogawa, S, Okabe, H, Oyama, K, Park, HM, Park, IG, Parker, J, Ra, YS, Rhee, JT, Rusek, A, Shibuya, H, Sim, KS, Saha, PK, Seki, D, Sekimoto, M, Song, JS, Takahashi, T, Takeutchi, F, Tanaka, H, Tanida, K, Tojo, J, Torii, H, Torikai, S, Tovee, DN, Ushida, N, Yamamoto, K, Yasuda, N, Yang, JT, Yoon, CJ, Yoon, CS, Yosoi, M, Yoshida, T & Zhu, L 2001, 'Observation of a ⁶_∧∧ He double hypernucleus', Physical review letters, vol. 87, no. 21, pp. 212502. https://doi.org/10.1103/PhysRevLett.87.212502

@article{31d80bcb846642acbb65651ff27fa93d,

title = "Observation of a 6∧∧ He double hypernucleus",

abstract = "A double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of 6∧ ∧ He emitted from a hyperon nuclear capture at rest. The mas of 6∧∧ He and the ∧ − ∧ interaction energy ΔB∧ ∧ have been measured for the first time devoid of the ambiguities due to the possibilities of excited states. The value of ΔB∧∧ is 1.01 ± 0.20+ 0.018-0.11MeV. This demonstrates that the ∧ − ∧ interaction is weakly attractive.",

author = "H. Takahashi and 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 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. J.} and Kim, {S. H.} and Y. Kondo and T. Kouketsu and Y. Lee and {Mc Nabb}, {J. W.C.} and M. Mitsuhara and Y. Nagase and C. Nagoshi and K. Nakazawa and H. Noumi and S. Ogawa and H. Okabe and K. Oyama and Park, {H. M.} and Park, {I. G.} and J. Parker and Ra, {Y. S.} and Rhee, {J. T.} and A. Rusek and H. Shibuya and Sim, {K. S.} and Saha, {P. K.} and D. Seki and M. Sekimoto and Song, {J. S.} and T. Takahashi and F. Takeutchi and H. Tanaka and K. Tanida and J. Tojo and H. Torii and S. Torikai and Tovee, {D. N.} and N. Ushida 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",

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doi = "10.1103/PhysRevLett.87.212502",

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T1 - Observation of a 6∧∧ He double hypernucleus

AU - Takahashi, H.

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 - 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. J.

AU - Kim, S. H.

AU - Kondo, Y.

AU - Kouketsu, T.

AU - Lee, Y.

AU - Mc Nabb, J. W.C.

AU - Mitsuhara, M.

AU - Nagase, Y.

AU - Nagoshi, C.

AU - Nakazawa, K.

AU - Noumi, H.

AU - Ogawa, S.

AU - Okabe, H.

AU - Oyama, K.

AU - Park, H. M.

AU - Park, I. G.

AU - Parker, J.

AU - Ra, Y. S.

AU - Rhee, J. T.

AU - Rusek, A.

AU - Shibuya, H.

AU - Sim, K. S.

AU - Saha, P. K.

AU - Seki, D.

AU - Sekimoto, M.

AU - Song, J. S.

AU - Takahashi, T.

AU - Takeutchi, F.

AU - Tanaka, H.

AU - Tanida, K.

AU - Tojo, J.

AU - Torii, H.

AU - Torikai, S.

AU - Tovee, D. N.

AU - Ushida, N.

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 - 2001/1/1

Y1 - 2001/1/1

N2 - A double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of 6∧ ∧ He emitted from a hyperon nuclear capture at rest. The mas of 6∧∧ He and the ∧ − ∧ interaction energy ΔB∧ ∧ have been measured for the first time devoid of the ambiguities due to the possibilities of excited states. The value of ΔB∧∧ is 1.01 ± 0.20+ 0.018-0.11MeV. This demonstrates that the ∧ − ∧ interaction is weakly attractive.

AB - A double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of 6∧ ∧ He emitted from a hyperon nuclear capture at rest. The mas of 6∧∧ He and the ∧ − ∧ interaction energy ΔB∧ ∧ have been measured for the first time devoid of the ambiguities due to the possibilities of excited states. The value of ΔB∧∧ is 1.01 ± 0.20+ 0.018-0.11MeV. This demonstrates that the ∧ − ∧ interaction is weakly attractive.

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U2 - 10.1103/PhysRevLett.87.212502

DO - 10.1103/PhysRevLett.87.212502

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AN - SCOPUS:85037192689

SN - 0031-9007

VL - 87

SP - 212502

JO - Physical review letters

JF - Physical review letters

IS - 21

ER -

Observation of a ⁶_∧∧ He double hypernucleus

Abstract

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