Observation of a 6 ∧∧ He double hypernucleus

H. Takahashi, Jung Keun 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

Research output: Contribution to journalArticle

8 Citations (Scopus)

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 languageEnglish
Number of pages1
JournalPhysical Review Letters
Volume87
Issue number21
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

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hypernuclei
nuclear capture
ambiguity
emulsions
interactions
decay
excitation
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Takahashi, H., Ahn, J. K., Akikawa, H., Aoki, S., Arai, K., Bahk, S. Y., ... Zhu, L. (2001). Observation of a 6 ∧∧ He double hypernucleus. Physical Review Letters, 87(21). https://doi.org/10.1103/PhysRevLett.87.212502

Observation of a 6 ∧∧ He double hypernucleus. / Takahashi, H.; Ahn, Jung Keun; 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.; Kaneko, M.; Kawai, T.; Kawasaki, M.; Kim, C. O.; Kim, J. Y.; Kim, S. J.; Kim, S. H.; Kondo, Y.; Kouketsu, T.; Lee, Y.; Mc Nabb, J. W.C.; Mitsuhara, M.; Nagase, Y.; Nagoshi, C.; Nakazawa, K.; Noumi, H.; Ogawa, S.; Okabe, H.; Oyama, K.; Park, H. M.; Park, I. G.; Parker, J.; Ra, Y. S.; Rhee, J. T.; Rusek, A.; Shibuya, H.; Sim, K. S.; Saha, P. K.; Seki, D.; Sekimoto, M.; Song, J. S.; Takahashi, T.; Takeutchi, F.; Tanaka, H.; Tanida, K.; Tojo, J.; Torii, H.; Torikai, S.; Tovee, D. N.; Ushida, N.; Yamamoto, K.; Yasuda, N.; Yang, J. T.; Yoon, C. J.; Yoon, C. S.; Yosoi, M.; Yoshida, T.; Zhu, L.

In: Physical Review Letters, Vol. 87, No. 21, 01.01.2001.

Research output: Contribution to journalArticle

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. https://doi.org/10.1103/PhysRevLett.87.212502
Takahashi, H. ; Ahn, Jung Keun ; 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. ; Kaneko, M. ; Kawai, T. ; Kawasaki, M. ; Kim, C. O. ; Kim, J. Y. ; Kim, S. J. ; Kim, S. H. ; Kondo, Y. ; Kouketsu, T. ; Lee, Y. ; Mc Nabb, J. W.C. ; Mitsuhara, M. ; Nagase, Y. ; Nagoshi, C. ; Nakazawa, K. ; Noumi, H. ; Ogawa, S. ; Okabe, H. ; Oyama, K. ; Park, H. M. ; Park, I. G. ; Parker, J. ; Ra, Y. S. ; Rhee, J. T. ; Rusek, A. ; Shibuya, H. ; Sim, K. S. ; Saha, P. K. ; Seki, D. ; Sekimoto, M. ; Song, J. S. ; Takahashi, T. ; Takeutchi, F. ; Tanaka, H. ; Tanida, K. ; Tojo, J. ; Torii, H. ; Torikai, S. ; Tovee, D. N. ; Ushida, N. ; Yamamoto, K. ; Yasuda, N. ; Yang, J. T. ; Yoon, C. J. ; Yoon, C. S. ; Yosoi, M. ; Yoshida, T. ; Zhu, L. / Observation of a 6 ∧∧ He double hypernucleus. In: Physical Review Letters. 2001 ; Vol. 87, No. 21.
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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, {Jung Keun} 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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T1 - Observation of a 6 ∧∧ He double hypernucleus

AU - Takahashi, H.

AU - Ahn, Jung Keun

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.

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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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