First observation of a nuclear s-state of a Ξ hypernucleus, 15ΞC

M. Yoshimoto; J. K. Ahn; B. Bassalleck; H. Ekawa; Y. Endo; M. Fujita; Y. Han; T. Hashimoto; S. H. Hayakawa; K. Hicks; K. Hoshino; S. Hoshino; S. H. Hwang; Y. Ichikawa; M. Ichikawa; K. Imai; Y. Ishikawa; H. Kanauchi; A. Kasagi; S. H. Kim; S. Kinbara; P. M. Lin; T. L. Ma; K. Miwa; A. T. Moe; Y. Nagase; K. Nakazawa; T. Nanamura; M. Naruki; A. N.L. Nyaw; J. Pochodzalla; H. Sako; S. Sato; M. M. Soe; M. K. Soe; J. Y. Sohn; H. Takahashi; T. Takahashi; H. Tamura; K. Tanida; A. M.M. Theint; K. T. Tint; M. Ukai; T. O. Yamamoto; S. B. Yang; C. S. Yoon; J. Yoshida; D. H. Zhang; Z. Zhang

doi:10.1093/ptep/ptab073

First observation of a nuclear s-state of a Ξ hypernucleus, ¹⁵_ΞC

M. Yoshimoto, J. K. Ahn, B. Bassalleck, H. Ekawa, Y. Endo, M. Fujita, Y. Han, T. Hashimoto, S. H. Hayakawa, K. Hicks, K. Hoshino, S. Hoshino, S. H. Hwang, Y. Ichikawa, M. Ichikawa, K. Imai, Y. Ishikawa, H. Kanauchi, A. Kasagi, S. H. KimS. Kinbara, P. M. Lin, T. L. Ma, K. Miwa, A. T. Moe, Y. Nagase, K. Nakazawa, T. Nanamura, M. Naruki, A. N.L. Nyaw, J. Pochodzalla, H. Sako, S. Sato, M. M. Soe, M. K. Soe, J. Y. Sohn, H. Takahashi, T. Takahashi, H. Tamura, K. Tanida, A. M.M. Theint, K. T. Tint, M. Ukai, T. O. Yamamoto, S. B. Yang, C. S. Yoon, J. Yoshida, D. H. Zhang, Z. Zhang

Department of Physics

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Abstract

Bound systems of Ξ- -14N are studied via Ξ- capture at rest followed by emission of a twin single-Λ hypernucleus in the emulsion detectors. Two events forming extremely deep Ξ- bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as Ξ- +14N → 5λHe +5λHe +4He + n. Since there are no excited states for daughter particles, the binding energy of the Ξ- hyperon, BΞ-, in the 14N nucleus was uniquely determined to be 6.27 ± 0.27MeV. Another Ξ- -14N system via the decay 9 λBe +5λHe + n brings a BΞ- value, 8.00 ± 0.77MeV or 4.96 ± 0.77MeV, where the two possible values of BΞ- correspond to the ground and the excited states of the daughter 9λ Be nucleus, respectively. Because the BΞ- values are larger than those of the previously reported events (KISO and IBUKI), which are both interpreted as the nuclear 1p state of the Ξ-14Nsystem, these newevents give the first indication of the nuclear 1s state of the Ξ hypernucleus, 15ΞC.

Original language	English
Article number	073D02
Journal	Progress of Theoretical and Experimental Physics
Volume	2021
Issue number	7
DOIs	https://doi.org/10.1093/ptep/ptab073
State	Published - 1 Jul 2021

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Yoshimoto, M., Ahn, J. K., Bassalleck, B., Ekawa, H., Endo, Y., Fujita, M., Han, Y., Hashimoto, T., Hayakawa, S. H., Hicks, K., Hoshino, K., Hoshino, S., Hwang, S. H., Ichikawa, Y., Ichikawa, M., Imai, K., Ishikawa, Y., Kanauchi, H., Kasagi, A., ... Zhang, Z. (2021). First observation of a nuclear s-state of a Ξ hypernucleus, ¹⁵_ΞC. Progress of Theoretical and Experimental Physics, 2021(7), Article 073D02. https://doi.org/10.1093/ptep/ptab073

@article{5eb88fdea68b482db52d4f7bbb93a8de,

title = "First observation of a nuclear s-state of a Ξ hypernucleus, 15ΞC",

abstract = "Bound systems of Ξ- -14N are studied via Ξ- capture at rest followed by emission of a twin single-Λ hypernucleus in the emulsion detectors. Two events forming extremely deep Ξ- bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as Ξ- +14N → 5λHe +5λHe +4He + n. Since there are no excited states for daughter particles, the binding energy of the Ξ- hyperon, BΞ-, in the 14N nucleus was uniquely determined to be 6.27 ± 0.27MeV. Another Ξ- -14N system via the decay 9 λBe +5λHe + n brings a BΞ- value, 8.00 ± 0.77MeV or 4.96 ± 0.77MeV, where the two possible values of BΞ- correspond to the ground and the excited states of the daughter 9λ Be nucleus, respectively. Because the BΞ- values are larger than those of the previously reported events (KISO and IBUKI), which are both interpreted as the nuclear 1p state of the Ξ-14Nsystem, these newevents give the first indication of the nuclear 1s state of the Ξ hypernucleus, 15ΞC.",

author = "M. Yoshimoto and Ahn, {J. K.} and B. Bassalleck and H. Ekawa and Y. Endo and M. Fujita and Y. Han and T. Hashimoto and Hayakawa, {S. H.} and K. Hicks and K. Hoshino and S. Hoshino and Hwang, {S. H.} and Y. Ichikawa and M. Ichikawa and K. Imai and Y. Ishikawa and H. Kanauchi and A. Kasagi and Kim, {S. H.} and S. Kinbara and Lin, {P. M.} and Ma, {T. L.} and K. Miwa and Moe, {A. T.} and Y. Nagase and K. Nakazawa and T. Nanamura and M. Naruki and Nyaw, {A. N.L.} and J. Pochodzalla and H. Sako and S. Sato and Soe, {M. M.} and Soe, {M. K.} and Sohn, {J. Y.} and H. Takahashi and T. Takahashi and H. Tamura and K. Tanida and Theint, {A. M.M.} and Tint, {K. T.} and M. Ukai and Yamamoto, {T. O.} and Yang, {S. B.} and Yoon, {C. S.} and J. Yoshida and Zhang, {D. H.} and Z. Zhang",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s). Published by Oxford University Press on behalf of the Physical Society of Japan.",

year = "2021",

month = jul,

day = "1",

doi = "10.1093/ptep/ptab073",

language = "English",

volume = "2021",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

number = "7",

}

Yoshimoto, M, Ahn, JK, Bassalleck, B, Ekawa, H, Endo, Y, Fujita, M, Han, Y, Hashimoto, T, Hayakawa, SH, Hicks, K, Hoshino, K, Hoshino, S, Hwang, SH, Ichikawa, Y, Ichikawa, M, Imai, K, Ishikawa, Y, Kanauchi, H, Kasagi, A, Kim, SH, Kinbara, S, Lin, PM, Ma, TL, Miwa, K, Moe, AT, Nagase, Y, Nakazawa, K, Nanamura, T, Naruki, M, Nyaw, ANL, Pochodzalla, J, Sako, H, Sato, S, Soe, MM, Soe, MK, Sohn, JY, Takahashi, H, Takahashi, T, Tamura, H, Tanida, K, Theint, AMM, Tint, KT, Ukai, M, Yamamoto, TO, Yang, SB, Yoon, CS, Yoshida, J, Zhang, DH & Zhang, Z 2021, 'First observation of a nuclear s-state of a Ξ hypernucleus, ¹⁵_ΞC', Progress of Theoretical and Experimental Physics, vol. 2021, no. 7, 073D02. https://doi.org/10.1093/ptep/ptab073

TY - JOUR

T1 - First observation of a nuclear s-state of a Ξ hypernucleus, 15ΞC

AU - Yoshimoto, M.

AU - Ahn, J. K.

AU - Bassalleck, B.

AU - Ekawa, H.

AU - Endo, Y.

AU - Fujita, M.

AU - Han, Y.

AU - Hashimoto, T.

AU - Hayakawa, S. H.

AU - Hicks, K.

AU - Hoshino, K.

AU - Hoshino, S.

AU - Hwang, S. H.

AU - Ichikawa, Y.

AU - Ichikawa, M.

AU - Imai, K.

AU - Ishikawa, Y.

AU - Kanauchi, H.

AU - Kasagi, A.

AU - Kim, S. H.

AU - Kinbara, S.

AU - Lin, P. M.

AU - Ma, T. L.

AU - Miwa, K.

AU - Moe, A. T.

AU - Nagase, Y.

AU - Nakazawa, K.

AU - Nanamura, T.

AU - Naruki, M.

AU - Nyaw, A. N.L.

AU - Pochodzalla, J.

AU - Sako, H.

AU - Sato, S.

AU - Soe, M. M.

AU - Soe, M. K.

AU - Sohn, J. Y.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Tamura, H.

AU - Tanida, K.

AU - Theint, A. M.M.

AU - Tint, K. T.

AU - Ukai, M.

AU - Yamamoto, T. O.

AU - Yang, S. B.

AU - Yoon, C. S.

AU - Yoshida, J.

AU - Zhang, D. H.

AU - Zhang, Z.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - Bound systems of Ξ- -14N are studied via Ξ- capture at rest followed by emission of a twin single-Λ hypernucleus in the emulsion detectors. Two events forming extremely deep Ξ- bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as Ξ- +14N → 5λHe +5λHe +4He + n. Since there are no excited states for daughter particles, the binding energy of the Ξ- hyperon, BΞ-, in the 14N nucleus was uniquely determined to be 6.27 ± 0.27MeV. Another Ξ- -14N system via the decay 9 λBe +5λHe + n brings a BΞ- value, 8.00 ± 0.77MeV or 4.96 ± 0.77MeV, where the two possible values of BΞ- correspond to the ground and the excited states of the daughter 9λ Be nucleus, respectively. Because the BΞ- values are larger than those of the previously reported events (KISO and IBUKI), which are both interpreted as the nuclear 1p state of the Ξ-14Nsystem, these newevents give the first indication of the nuclear 1s state of the Ξ hypernucleus, 15ΞC.

AB - Bound systems of Ξ- -14N are studied via Ξ- capture at rest followed by emission of a twin single-Λ hypernucleus in the emulsion detectors. Two events forming extremely deep Ξ- bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as Ξ- +14N → 5λHe +5λHe +4He + n. Since there are no excited states for daughter particles, the binding energy of the Ξ- hyperon, BΞ-, in the 14N nucleus was uniquely determined to be 6.27 ± 0.27MeV. Another Ξ- -14N system via the decay 9 λBe +5λHe + n brings a BΞ- value, 8.00 ± 0.77MeV or 4.96 ± 0.77MeV, where the two possible values of BΞ- correspond to the ground and the excited states of the daughter 9λ Be nucleus, respectively. Because the BΞ- values are larger than those of the previously reported events (KISO and IBUKI), which are both interpreted as the nuclear 1p state of the Ξ-14Nsystem, these newevents give the first indication of the nuclear 1s state of the Ξ hypernucleus, 15ΞC.

UR - http://www.scopus.com/inward/record.url?scp=85113865734&partnerID=8YFLogxK

U2 - 10.1093/ptep/ptab073

DO - 10.1093/ptep/ptab073

M3 - Article

AN - SCOPUS:85113865734

SN - 2050-3911

VL - 2021

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 7

M1 - 073D02

ER -

First observation of a nuclear s-state of a Ξ hypernucleus, ¹⁵_ΞC

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