Production of twin λ-hypernuclei from ξ- hyperon capture at rest

A. Ichikawa; J. K. Ahn; H. Akikawa; S. Aoki; K. Arai; S. Y. Bahk; K. M. Baik; B. Bassalleck; J. H. Chung; M. S. Chung; K. Hoshino; M. Ieiri; K. Imai; Y. H. Iwata; Y. S. Iwata; H. Kanda; M. Kaneko; T. Kawai; 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; P. K. Saha; D. Seki; M. Sekimoto; J. S. Song; H. Takahashi; T. Takahashi; F. Takeutchi; H. Tanaka; K. Tanida; J. Tojo; H. Torii; S. Torikai; N. Ushida; K. Yamamoto; N. Yasuda; J. T. Yang; C. J. Yoon; C. S. Yoon; M. Yosoi; T. Yoshida; L. Zhu

doi:10.1016/S0370-2693(01)00049-1

Production of twin λ-hypernuclei from ξ^- hyperon capture at rest

A. Ichikawa, J. K. Ahn, H. Akikawa, S. Aoki, K. Arai, S. Y. Bahk, K. M. Baik, B. Bassalleck, J. H. Chung, M. S. Chung, K. Hoshino, M. Ieiri, K. Imai, Y. H. Iwata, Y. S. Iwata, H. Kanda, M. Kaneko, T. Kawai, C. O. Kim, J. Y. KimS. 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, P. K. Saha, D. Seki, M. Sekimoto, J. S. Song, H. Takahashi, T. Takahashi, F. Takeutchi, H. Tanaka, K. Tanida, J. Tojo, H. Torii, S. Torikai, 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 carried out to study double-strangeness nuclei produced via ξ^- hyperon capture at rest with the expectation of ten times larger statistics than previous experiments. We have analyzed 5% of the total emulsion and found one "twin-hypernuclei" event involving the emission of two single-λ hypernuclei and a nuclear fragment from a ξ^- hyperon stopping point. The event is interpreted as the decay of a ξ^- + ¹⁴N atomic system to _λ/⁵ He + _λ/⁵ He + ⁴ He + neutron. The species of the ξ^- -atom and the fragmentation products are uniquely identified for the first time for twin-hypernuclei events. Combined with the results from a past hybrid-emulsion experiment, one double-λ hypernucleus and three twin-hypernuclei events have been found from ξ^- captures on light emulsion nuclei. The ratio of the detected rate of double-λ hypernuclei to that of twin-hypernuclei is compared with theoretical estimates.

Original language	English
Pages (from-to)	37-46
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	500
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(01)00049-1
Publication status	Published - Feb 15 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/S0370-2693(01)00049-1

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Ichikawa, A., Ahn, J. K., Akikawa, H., Aoki, S., Arai, K., Bahk, S. Y., Baik, K. M., Bassalleck, B., Chung, J. H., Chung, M. S., Hoshino, K., Ieiri, M., Imai, K., Iwata, Y. H., Iwata, Y. S., Kanda, H., Kaneko, M., Kawai, T., Kim, C. O., ... Zhu, L. (2001). Production of twin λ-hypernuclei from ξ^- hyperon capture at rest. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 500(1-2), 37-46. https://doi.org/10.1016/S0370-2693(01)00049-1

Ichikawa, A, Ahn, JK, Akikawa, H, Aoki, S, Arai, K, Bahk, SY, Baik, KM, Bassalleck, B, Chung, JH, Chung, MS, Hoshino, K, Ieiri, M, Imai, K, Iwata, YH, Iwata, YS, Kanda, H, Kaneko, M, Kawai, T, 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, PK, Seki, D, Sekimoto, M, Song, JS, Takahashi, H, Takahashi, T, Takeutchi, F, Tanaka, H, Tanida, K, Tojo, J, Torii, H, Torikai, S, Ushida, N, Yamamoto, K, Yasuda, N, Yang, JT, Yoon, CJ, Yoon, CS, Yosoi, M, Yoshida, T & Zhu, L 2001, 'Production of twin λ-hypernuclei from ξ^- hyperon capture at rest', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 500, no. 1-2, pp. 37-46. https://doi.org/10.1016/S0370-2693(01)00049-1

@article{649eb76737284679813cdf44d9afc297,

title = "Production of twin λ-hypernuclei from ξ- hyperon capture at rest",

abstract = "A hybrid emulsion experiment was carried out to study double-strangeness nuclei produced via ξ- hyperon capture at rest with the expectation of ten times larger statistics than previous experiments. We have analyzed 5% of the total emulsion and found one {"}twin-hypernuclei{"} event involving the emission of two single-λ hypernuclei and a nuclear fragment from a ξ- hyperon stopping point. The event is interpreted as the decay of a ξ- + 14N atomic system to λ/5 He + λ/5 He + 4 He + neutron. The species of the ξ- -atom and the fragmentation products are uniquely identified for the first time for twin-hypernuclei events. Combined with the results from a past hybrid-emulsion experiment, one double-λ hypernucleus and three twin-hypernuclei events have been found from ξ- captures on light emulsion nuclei. The ratio of the detected rate of double-λ hypernuclei to that of twin-hypernuclei is compared with theoretical estimates.",

author = "A. Ichikawa 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 K. Hoshino and M. Ieiri and K. Imai and Iwata, {Y. H.} and Iwata, {Y. S.} and H. Kanda and M. Kaneko and T. Kawai 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 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 J. Tojo and H. Torii and S. Torikai 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",

note = "Funding Information: We would like to express our thanks to staffs of KEK PS for their support during the experiment and analysis. We are grateful to Professor D.H. Davis and Dr. D.N. Tovee for valuable discussions. We thank Professors Y. Yamamoto, T. Yamada and A. Ohnishi and Dr. Y. Hirata for discussions on theoretical aspects. This work was supported partially by Grants-in-Aid for Scientific Research on the Priority Area “Strangeness Nuclear Physics” (No. 08239103) from the Japan Ministry of Education and Korea Research Foundation Grant (KRF-99-005-D00004). One of the authors (A.I.) is grateful to JSPS Research Fellowships for Young Scientists. Another author (B.B.) also appreciates the support of a JSPS Fellowship.",

year = "2001",

month = feb,

day = "15",

doi = "10.1016/S0370-2693(01)00049-1",

language = "English",

volume = "500",

pages = "37--46",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Production of twin λ-hypernuclei from ξ- hyperon capture at rest

AU - Ichikawa, A.

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 - Hoshino, K.

AU - Ieiri, M.

AU - Imai, K.

AU - Iwata, Y. H.

AU - Iwata, Y. S.

AU - Kanda, H.

AU - Kaneko, M.

AU - Kawai, T.

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, 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 - Tojo, J.

AU - Torii, H.

AU - Torikai, S.

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.

N1 - Funding Information: We would like to express our thanks to staffs of KEK PS for their support during the experiment and analysis. We are grateful to Professor D.H. Davis and Dr. D.N. Tovee for valuable discussions. We thank Professors Y. Yamamoto, T. Yamada and A. Ohnishi and Dr. Y. Hirata for discussions on theoretical aspects. This work was supported partially by Grants-in-Aid for Scientific Research on the Priority Area “Strangeness Nuclear Physics” (No. 08239103) from the Japan Ministry of Education and Korea Research Foundation Grant (KRF-99-005-D00004). One of the authors (A.I.) is grateful to JSPS Research Fellowships for Young Scientists. Another author (B.B.) also appreciates the support of a JSPS Fellowship.

PY - 2001/2/15

Y1 - 2001/2/15

N2 - A hybrid emulsion experiment was carried out to study double-strangeness nuclei produced via ξ- hyperon capture at rest with the expectation of ten times larger statistics than previous experiments. We have analyzed 5% of the total emulsion and found one "twin-hypernuclei" event involving the emission of two single-λ hypernuclei and a nuclear fragment from a ξ- hyperon stopping point. The event is interpreted as the decay of a ξ- + 14N atomic system to λ/5 He + λ/5 He + 4 He + neutron. The species of the ξ- -atom and the fragmentation products are uniquely identified for the first time for twin-hypernuclei events. Combined with the results from a past hybrid-emulsion experiment, one double-λ hypernucleus and three twin-hypernuclei events have been found from ξ- captures on light emulsion nuclei. The ratio of the detected rate of double-λ hypernuclei to that of twin-hypernuclei is compared with theoretical estimates.

AB - A hybrid emulsion experiment was carried out to study double-strangeness nuclei produced via ξ- hyperon capture at rest with the expectation of ten times larger statistics than previous experiments. We have analyzed 5% of the total emulsion and found one "twin-hypernuclei" event involving the emission of two single-λ hypernuclei and a nuclear fragment from a ξ- hyperon stopping point. The event is interpreted as the decay of a ξ- + 14N atomic system to λ/5 He + λ/5 He + 4 He + neutron. The species of the ξ- -atom and the fragmentation products are uniquely identified for the first time for twin-hypernuclei events. Combined with the results from a past hybrid-emulsion experiment, one double-λ hypernucleus and three twin-hypernuclei events have been found from ξ- captures on light emulsion nuclei. The ratio of the detected rate of double-λ hypernuclei to that of twin-hypernuclei is compared with theoretical estimates.

UR - http://www.scopus.com/inward/record.url?scp=0035865720&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035865720&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(01)00049-1

DO - 10.1016/S0370-2693(01)00049-1

M3 - Article

AN - SCOPUS:0035865720

SN - 0370-2693

VL - 500

SP - 37

EP - 46

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Production of twin λ-hypernuclei from ξ^- hyperon capture at rest

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