Observation of a ΛΛ6He 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. L. Lee, J. W.C. McNabb, 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, 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 hybrid-emulsion experiment was conducted to study a double-hyperfragment event and to calculate the binding energies of double hypernuclei. The 6λλHe hypernucleus constituting the lightest closed shell structure containing baryons was studied. The experiment was conducted at the KEK proton synchrotron using the 1.66 GeV/c separated laser beams. The experiment identified the sequential decay of the hypernucleus; and measured its mass and interaction energy. Results of the experiment showed that the λλ interaction was weakly attractive.

Original languageEnglish
Article number212502
Pages (from-to)2125021-2125025
Number of pages5
JournalPhysical Review Letters
Volume87
Issue number21
Publication statusPublished - Nov 19 2001

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hypernuclei
emulsions
baryons
synchrotrons
binding energy
interactions
laser beams
protons
decay
energy

All Science Journal Classification (ASJC) codes

  • 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 ΛΛ6He double hypernucleus. Physical Review Letters, 87(21), 2125021-2125025. [212502].

Observation of a ΛΛ6He double hypernucleus. / 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.; Kaneko, M.; Kawai, T.; Kawasaki, M.; Kim, C. O.; Kim, J. Y.; Kim, S. J.; Kim, S. H.; Kondo, Y.; Kouketsu, T.; Lee, Y. L.; McNabb, 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, 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, 212502, 19.11.2001, p. 2125021-2125025.

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, YL, McNabb, 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, K, 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 ΛΛ6He double hypernucleus', Physical Review Letters, vol. 87, no. 21, 212502, pp. 2125021-2125025.
Takahashi H, Ahn JK, Akikawa H, Aoki S, Arai K, Bahk SY et al. Observation of a ΛΛ6He double hypernucleus. Physical Review Letters. 2001 Nov 19;87(21):2125021-2125025. 212502.
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. ; Kaneko, M. ; Kawai, T. ; Kawasaki, M. ; Kim, C. O. ; Kim, J. Y. ; Kim, S. J. ; Kim, S. H. ; Kondo, Y. ; Kouketsu, T. ; Lee, Y. L. ; McNabb, 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, 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 ΛΛ6He double hypernucleus. In: Physical Review Letters. 2001 ; Vol. 87, No. 21. pp. 2125021-2125025.
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title = "Observation of a ΛΛ6He double hypernucleus",
abstract = "A hybrid-emulsion experiment was conducted to study a double-hyperfragment event and to calculate the binding energies of double hypernuclei. The 6λλHe hypernucleus constituting the lightest closed shell structure containing baryons was studied. The experiment was conducted at the KEK proton synchrotron using the 1.66 GeV/c separated laser beams. The experiment identified the sequential decay of the hypernucleus; and measured its mass and interaction energy. Results of the experiment showed that the λλ interaction was 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 Lee, {Y. L.} and McNabb, {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 K. Saha 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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TY - JOUR

T1 - Observation of a ΛΛ6He 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. L.

AU - McNabb, 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, 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 - 2001/11/19

Y1 - 2001/11/19

N2 - A hybrid-emulsion experiment was conducted to study a double-hyperfragment event and to calculate the binding energies of double hypernuclei. The 6λλHe hypernucleus constituting the lightest closed shell structure containing baryons was studied. The experiment was conducted at the KEK proton synchrotron using the 1.66 GeV/c separated laser beams. The experiment identified the sequential decay of the hypernucleus; and measured its mass and interaction energy. Results of the experiment showed that the λλ interaction was weakly attractive.

AB - A hybrid-emulsion experiment was conducted to study a double-hyperfragment event and to calculate the binding energies of double hypernuclei. The 6λλHe hypernucleus constituting the lightest closed shell structure containing baryons was studied. The experiment was conducted at the KEK proton synchrotron using the 1.66 GeV/c separated laser beams. The experiment identified the sequential decay of the hypernucleus; and measured its mass and interaction energy. Results of the experiment showed that the λλ interaction was weakly attractive.

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JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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M1 - 212502

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