Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction

K. Kisamori; S. Shimoura; H. Miya; S. Michimasa; S. Ota; M. Assie; H. Baba; T. Baba; D. Beaumel; M. Dozono; T. Fujii; N. Fukuda; S. Go; F. Hammache; E. Ideguchi; N. Inabe; M. Itoh; D. Kameda; S. Kawase; T. Kawabata; M. Kobayashi; Y. Kondo; T. Kubo; Y. Kubota; M. Kurata-Nishimura; C. S. Lee; Y. Maeda; H. Matsubara; K. Miki; T. Nishi; S. Noji; S. Sakaguchi; H. Sakai; Y. Sasamoto; M. Sasano; H. Sato; Y. Shimizu; A. Stolz; H. Suzuki; M. Takaki; H. Takeda; S. Takeuchi; A. Tamii; L. Tang; H. Tokieda; M. Tsumura; T. Uesaka; K. Yako; Y. Yanagisawa; R. Yokoyama; K. Yoshida

doi:10.1103/PhysRevLett.116.052501

Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction

K. Kisamori, S. Shimoura, H. Miya, S. Michimasa, S. Ota, M. Assie, H. Baba, T. Baba, D. Beaumel, M. Dozono, T. Fujii, N. Fukuda, S. Go, F. Hammache, E. Ideguchi, N. Inabe, M. Itoh, D. Kameda, S. Kawase, T. KawabataM. Kobayashi, Y. Kondo, T. Kubo, Y. Kubota, M. Kurata-Nishimura, C. S. Lee, Y. Maeda, H. Matsubara, K. Miki, T. Nishi, S. Noji, S. Sakaguchi, H. Sakai, Y. Sasamoto, M. Sasano, H. Sato, Y. Shimizu, A. Stolz, H. Suzuki, M. Takaki, H. Takeda, S. Takeuchi, A. Tamii, L. Tang, H. Tokieda, M. Tsumura, T. Uesaka, K. Yako, Y. Yanagisawa, R. Yokoyama, K. Yoshida

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Abstract

A candidate resonant tetraneutron state is found in the missing-mass spectrum obtained in the double-charge-exchange reaction He4(He8,Be8) at 186 MeV/u. The energy of the state is 0.83±0.65(stat)±1.25(syst) MeV above the threshold of four-neutron decay with a significance level of 4.9σ. Utilizing the large positive Q value of the (He8,Be8) reaction, an almost recoilless condition of the four-neutron system was achieved so as to obtain a weakly interacting four-neutron system efficiently.

Original language	English
Article number	052501
Journal	Physical Review Letters
Volume	116
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.116.052501
Publication status	Published - 03-02-2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.116.052501

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Kisamori, K., Shimoura, S., Miya, H., Michimasa, S., Ota, S., Assie, M., Baba, H., Baba, T., Beaumel, D., Dozono, M., Fujii, T., Fukuda, N., Go, S., Hammache, F., Ideguchi, E., Inabe, N., Itoh, M., Kameda, D., Kawase, S., ... Yoshida, K. (2016). Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction. Physical Review Letters, 116(5), Article 052501. https://doi.org/10.1103/PhysRevLett.116.052501

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title = "Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction",

abstract = "A candidate resonant tetraneutron state is found in the missing-mass spectrum obtained in the double-charge-exchange reaction He4(He8,Be8) at 186 MeV/u. The energy of the state is 0.83±0.65(stat)±1.25(syst) MeV above the threshold of four-neutron decay with a significance level of 4.9σ. Utilizing the large positive Q value of the (He8,Be8) reaction, an almost recoilless condition of the four-neutron system was achieved so as to obtain a weakly interacting four-neutron system efficiently.",

author = "K. Kisamori and S. Shimoura and H. Miya and S. Michimasa and S. Ota and M. Assie and H. Baba and T. Baba and D. Beaumel and M. Dozono and T. Fujii and N. Fukuda and S. Go and F. Hammache and E. Ideguchi and N. Inabe and M. Itoh and D. Kameda and S. Kawase and T. Kawabata and M. Kobayashi and Y. Kondo and T. Kubo and Y. Kubota and M. Kurata-Nishimura and Lee, {C. S.} and Y. Maeda and H. Matsubara and K. Miki and T. Nishi and S. Noji and S. Sakaguchi and H. Sakai and Y. Sasamoto and M. Sasano and H. Sato and Y. Shimizu and A. Stolz and H. Suzuki and M. Takaki and H. Takeda and S. Takeuchi and A. Tamii and L. Tang and H. Tokieda and M. Tsumura and T. Uesaka and K. Yako and Y. Yanagisawa and R. Yokoyama and K. Yoshida",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = feb,

day = "3",

doi = "10.1103/PhysRevLett.116.052501",

language = "English",

volume = "116",

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Kisamori, K, Shimoura, S, Miya, H, Michimasa, S, Ota, S, Assie, M, Baba, H, Baba, T, Beaumel, D, Dozono, M, Fujii, T, Fukuda, N, Go, S, Hammache, F, Ideguchi, E, Inabe, N, Itoh, M, Kameda, D, Kawase, S, Kawabata, T, Kobayashi, M, Kondo, Y, Kubo, T, Kubota, Y, Kurata-Nishimura, M, Lee, CS, Maeda, Y, Matsubara, H, Miki, K, Nishi, T, Noji, S, Sakaguchi, S, Sakai, H, Sasamoto, Y, Sasano, M, Sato, H, Shimizu, Y, Stolz, A, Suzuki, H, Takaki, M, Takeda, H, Takeuchi, S, Tamii, A, Tang, L, Tokieda, H, Tsumura, M, Uesaka, T, Yako, K, Yanagisawa, Y, Yokoyama, R & Yoshida, K 2016, 'Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction', Physical Review Letters, vol. 116, no. 5, 052501. https://doi.org/10.1103/PhysRevLett.116.052501

TY - JOUR

T1 - Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction

AU - Kisamori, K.

AU - Shimoura, S.

AU - Miya, H.

AU - Michimasa, S.

AU - Ota, S.

AU - Assie, M.

AU - Baba, H.

AU - Baba, T.

AU - Beaumel, D.

AU - Dozono, M.

AU - Fujii, T.

AU - Fukuda, N.

AU - Go, S.

AU - Hammache, F.

AU - Ideguchi, E.

AU - Inabe, N.

AU - Itoh, M.

AU - Kameda, D.

AU - Kawase, S.

AU - Kawabata, T.

AU - Kobayashi, M.

AU - Kondo, Y.

AU - Kubo, T.

AU - Kubota, Y.

AU - Kurata-Nishimura, M.

AU - Lee, C. S.

AU - Maeda, Y.

AU - Matsubara, H.

AU - Miki, K.

AU - Nishi, T.

AU - Noji, S.

AU - Sakaguchi, S.

AU - Sakai, H.

AU - Sasamoto, Y.

AU - Sasano, M.

AU - Sato, H.

AU - Shimizu, Y.

AU - Stolz, A.

AU - Suzuki, H.

AU - Takaki, M.

AU - Takeda, H.

AU - Takeuchi, S.

AU - Tamii, A.

AU - Tang, L.

AU - Tokieda, H.

AU - Tsumura, M.

AU - Uesaka, T.

AU - Yako, K.

AU - Yanagisawa, Y.

AU - Yokoyama, R.

AU - Yoshida, K.

PY - 2016/2/3

Y1 - 2016/2/3

N2 - A candidate resonant tetraneutron state is found in the missing-mass spectrum obtained in the double-charge-exchange reaction He4(He8,Be8) at 186 MeV/u. The energy of the state is 0.83±0.65(stat)±1.25(syst) MeV above the threshold of four-neutron decay with a significance level of 4.9σ. Utilizing the large positive Q value of the (He8,Be8) reaction, an almost recoilless condition of the four-neutron system was achieved so as to obtain a weakly interacting four-neutron system efficiently.

AB - A candidate resonant tetraneutron state is found in the missing-mass spectrum obtained in the double-charge-exchange reaction He4(He8,Be8) at 186 MeV/u. The energy of the state is 0.83±0.65(stat)±1.25(syst) MeV above the threshold of four-neutron decay with a significance level of 4.9σ. Utilizing the large positive Q value of the (He8,Be8) reaction, an almost recoilless condition of the four-neutron system was achieved so as to obtain a weakly interacting four-neutron system efficiently.

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U2 - 10.1103/PhysRevLett.116.052501

DO - 10.1103/PhysRevLett.116.052501

M3 - Article

AN - SCOPUS:84957828028

SN - 0031-9007

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 052501

ER -

Candidate Resonant Tetraneutron State Populated by the He 4 (He 8, Be 8) Reaction

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