Enhanced Λ Λ production near threshold in the 12C(K-, K+) reaction KEK-PS E224 Collaboration

J. K. Ahn; S. Aoki; K. S. Chung; M. S. Chung; H. En'yo; T. Fukuda; H. Funahashi; Y. Goto; A. Higashi; M. Ieiri; T. Iijima; M. Iinuma; K. Imai; Y. Itow; J. M. Lee; S. Makino; A. Masaike; Y. Matsuda; Y. Matsuyama; S. Mihara; C. Nagoshi; I. Nomura; I. S. Park; N. Saito; M. Sekimoto; Y. M. Shin; K. S. Sim; R. Susukita; R. Takashima; F. Takeutchi; P. Tlustý; S. Weibe; S. Yokkaichi; K. Yoshida; M. Yoshida; T. Yoshida; S. Yamashita

doi:10.1016/S0370-2693(98)01416-6

Enhanced Λ Λ production near threshold in the ¹²C(K^-, K⁺) reaction KEK-PS E224 Collaboration

J. K. Ahn, S. Aoki, K. S. Chung, M. S. Chung, H. En'yo, T. Fukuda, H. Funahashi, Y. Goto, A. Higashi, M. Ieiri, T. Iijima, M. Iinuma, K. Imai, Y. Itow, J. M. Lee, S. Makino, A. Masaike, Y. Matsuda, Y. Matsuyama, S. MiharaC. Nagoshi, I. Nomura, I. S. Park, N. Saito, M. Sekimoto, Y. M. Shin, K. S. Sim, R. Susukita, R. Takashima, F. Takeutchi, P. Tlustý, S. Weibe, S. Yokkaichi, K. Yoshida, M. Yoshida, T. Yoshida, S. Yamashita

研究成果: Contribution to journal › Article › 査読

48 被引用数 (Scopus)

抄録

Enhanced production of Λ Λ pairs, above levels predicted by a two-step process model, has been observed near threshold (in the mass range 2.23-2.26 GeV/c²) in the ¹²C(K^-, K⁺) reaction at 1.66 GeV/c using a scintillating fiber target. The differential cross section for Λ Λ production in the momentum region 0.95 ≤ p_K+ ≤ 1.3 GeV/c averaged over the range 2.3° ≤ θ_K+ ≤ 14.7° was found to be 7.6 ± 1.3 ± 0.9 μb/sr, and that for the enhancement was found to be approximately 3 μb/sr.

本文言語	英語
ページ（範囲）	267-272
ページ数	6
ジャーナル	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
巻	444
号	3-4
DOI	https://doi.org/10.1016/S0370-2693(98)01416-6
出版ステータス	出版済み - 12 24 1998
外部発表	はい

All Science Journal Classification (ASJC) codes

核物理学および高エネルギー物理学

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10.1016/S0370-2693(98)01416-6

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引用スタイル

Ahn, J. K., Aoki, S., Chung, K. S., Chung, M. S., En'yo, H., Fukuda, T., Funahashi, H., Goto, Y., Higashi, A., Ieiri, M., Iijima, T., Iinuma, M., Imai, K., Itow, Y., Lee, J. M., Makino, S., Masaike, A., Matsuda, Y., Matsuyama, Y., ... Yamashita, S. (1998). Enhanced Λ Λ production near threshold in the ¹²C(K^-, K⁺) reaction KEK-PS E224 Collaboration. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 444(3-4), 267-272. https://doi.org/10.1016/S0370-2693(98)01416-6

Enhanced Λ Λ production near threshold in the ¹²C(K^-, K⁺) reaction KEK-PS E224 Collaboration. / Ahn, J. K.; Aoki, S.; Chung, K. S.; Chung, M. S.; En'yo, H.; Fukuda, T.; Funahashi, H.; Goto, Y.; Higashi, A.; Ieiri, M.; Iijima, T.; Iinuma, M.; Imai, K.; Itow, Y.; Lee, J. M.; Makino, S.; Masaike, A.; Matsuda, Y.; Matsuyama, Y.; Mihara, S.; Nagoshi, C.; Nomura, I.; Park, I. S.; Saito, N.; Sekimoto, M.; Shin, Y. M.; Sim, K. S.; Susukita, R.; Takashima, R.; Takeutchi, F.; Tlustý, P.; Weibe, S.; Yokkaichi, S.; Yoshida, K.; Yoshida, M.; Yoshida, T.; Yamashita, S.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 444, No. 3-4, 24.12.1998, p. 267-272.

研究成果: Contribution to journal › Article › 査読

Ahn, JK, Aoki, S, Chung, KS, Chung, MS, En'yo, H, Fukuda, T, Funahashi, H, Goto, Y, Higashi, A, Ieiri, M, Iijima, T, Iinuma, M, Imai, K, Itow, Y, Lee, JM, Makino, S, Masaike, A, Matsuda, Y, Matsuyama, Y, Mihara, S, Nagoshi, C, Nomura, I, Park, IS, Saito, N, Sekimoto, M, Shin, YM, Sim, KS, Susukita, R, Takashima, R, Takeutchi, F, Tlustý, P, Weibe, S, Yokkaichi, S, Yoshida, K, Yoshida, M, Yoshida, T & Yamashita, S 1998, 'Enhanced Λ Λ production near threshold in the ¹²C(K^-, K⁺) reaction KEK-PS E224 Collaboration', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 444, no. 3-4, pp. 267-272. https://doi.org/10.1016/S0370-2693(98)01416-6

Ahn, J. K. ; Aoki, S. ; Chung, K. S. ; Chung, M. S. ; En'yo, H. ; Fukuda, T. ; Funahashi, H. ; Goto, Y. ; Higashi, A. ; Ieiri, M. ; Iijima, T. ; Iinuma, M. ; Imai, K. ; Itow, Y. ; Lee, J. M. ; Makino, S. ; Masaike, A. ; Matsuda, Y. ; Matsuyama, Y. ; Mihara, S. ; Nagoshi, C. ; Nomura, I. ; Park, I. S. ; Saito, N. ; Sekimoto, M. ; Shin, Y. M. ; Sim, K. S. ; Susukita, R. ; Takashima, R. ; Takeutchi, F. ; Tlustý, P. ; Weibe, S. ; Yokkaichi, S. ; Yoshida, K. ; Yoshida, M. ; Yoshida, T. ; Yamashita, S. / Enhanced Λ Λ production near threshold in the ¹²C(K^-, K⁺) reaction KEK-PS E224 Collaboration. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1998 ; Vol. 444, No. 3-4. pp. 267-272.

@article{02030f324a1549e29cbc10358706b67c,

title = "Enhanced Λ Λ production near threshold in the 12C(K-, K+) reaction KEK-PS E224 Collaboration",

abstract = "Enhanced production of Λ Λ pairs, above levels predicted by a two-step process model, has been observed near threshold (in the mass range 2.23-2.26 GeV/c2) in the 12C(K-, K+) reaction at 1.66 GeV/c using a scintillating fiber target. The differential cross section for Λ Λ production in the momentum region 0.95 ≤ pK+ ≤ 1.3 GeV/c averaged over the range 2.3° ≤ θK+ ≤ 14.7° was found to be 7.6 ± 1.3 ± 0.9 μb/sr, and that for the enhancement was found to be approximately 3 μb/sr.",

author = "Ahn, {J. K.} and S. Aoki and Chung, {K. S.} and Chung, {M. S.} and H. En'yo and T. Fukuda and H. Funahashi and Y. Goto and A. Higashi and M. Ieiri and T. Iijima and M. Iinuma and K. Imai and Y. Itow and Lee, {J. M.} and S. Makino and A. Masaike and Y. Matsuda and Y. Matsuyama and S. Mihara and C. Nagoshi and I. Nomura and Park, {I. S.} and N. Saito and M. Sekimoto and Shin, {Y. M.} and Sim, {K. S.} and R. Susukita and R. Takashima and F. Takeutchi and P. Tlust{\'y} and S. Weibe and S. Yokkaichi and K. Yoshida and M. Yoshida and T. Yoshida and S. Yamashita",

note = "Funding Information: We would like to thank the staff of the KEK proton synchrotron for their continuous support. We also thank Y. Akaishi, D.J. Millener and A. Ohnishi for valuable discussions. This work was supported in part by a Grant-in-Aid for Scientific Research (02402008), the Ministry of Science, Culture and Education, Japan, and the Basic Science Research Institute Program (BSRI-97-2408), Ministry of Education, Republic of Korea. ",

year = "1998",

month = dec,

day = "24",

doi = "10.1016/S0370-2693(98)01416-6",

language = "English",

volume = "444",

pages = "267--272",

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

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TY - JOUR

T1 - Enhanced Λ Λ production near threshold in the 12C(K-, K+) reaction KEK-PS E224 Collaboration

AU - Ahn, J. K.

AU - Aoki, S.

AU - Chung, K. S.

AU - Chung, M. S.

AU - En'yo, H.

AU - Fukuda, T.

AU - Funahashi, H.

AU - Goto, Y.

AU - Higashi, A.

AU - Ieiri, M.

AU - Iijima, T.

AU - Iinuma, M.

AU - Imai, K.

AU - Itow, Y.

AU - Lee, J. M.

AU - Makino, S.

AU - Masaike, A.

AU - Matsuda, Y.

AU - Matsuyama, Y.

AU - Mihara, S.

AU - Nagoshi, C.

AU - Nomura, I.

AU - Park, I. S.

AU - Saito, N.

AU - Sekimoto, M.

AU - Shin, Y. M.

AU - Sim, K. S.

AU - Susukita, R.

AU - Takashima, R.

AU - Takeutchi, F.

AU - Tlustý, P.

AU - Weibe, S.

AU - Yokkaichi, S.

AU - Yoshida, K.

AU - Yoshida, M.

AU - Yoshida, T.

AU - Yamashita, S.

N1 - Funding Information: We would like to thank the staff of the KEK proton synchrotron for their continuous support. We also thank Y. Akaishi, D.J. Millener and A. Ohnishi for valuable discussions. This work was supported in part by a Grant-in-Aid for Scientific Research (02402008), the Ministry of Science, Culture and Education, Japan, and the Basic Science Research Institute Program (BSRI-97-2408), Ministry of Education, Republic of Korea.

PY - 1998/12/24

Y1 - 1998/12/24

N2 - Enhanced production of Λ Λ pairs, above levels predicted by a two-step process model, has been observed near threshold (in the mass range 2.23-2.26 GeV/c2) in the 12C(K-, K+) reaction at 1.66 GeV/c using a scintillating fiber target. The differential cross section for Λ Λ production in the momentum region 0.95 ≤ pK+ ≤ 1.3 GeV/c averaged over the range 2.3° ≤ θK+ ≤ 14.7° was found to be 7.6 ± 1.3 ± 0.9 μb/sr, and that for the enhancement was found to be approximately 3 μb/sr.

AB - Enhanced production of Λ Λ pairs, above levels predicted by a two-step process model, has been observed near threshold (in the mass range 2.23-2.26 GeV/c2) in the 12C(K-, K+) reaction at 1.66 GeV/c using a scintillating fiber target. The differential cross section for Λ Λ production in the momentum region 0.95 ≤ pK+ ≤ 1.3 GeV/c averaged over the range 2.3° ≤ θK+ ≤ 14.7° was found to be 7.6 ± 1.3 ± 0.9 μb/sr, and that for the enhancement was found to be approximately 3 μb/sr.

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U2 - 10.1016/S0370-2693(98)01416-6

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SP - 267

EP - 272

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

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

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