Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam

K. Miwa; S. Dairaku; D. Nakajima; S. Ajimura; J. Arvieux; H. Fujimura; H. Fujioka; T. Fukuda; H. Funahashi; M. Hayata; K. Hicks; K. Imai; S. Ishimoto; T. Kameyama; S. Kamigaito; S. Kinoshita; Takeshi Koike; Y. Ma; T. Maruta; Y. Miura; M. Miyabe; T. Nagae; T. Nakano; K. Nakazawa; M. Naruki; H. Noumi; M. Niiyama; N. Saito; Y. Sato; S. Sawada; Y. Seki; M. Sekimoto; K. Senzaka; K. Shirotori; K. Shoji; S. Suzuki; H. Takahashi; T. Takahashi; T. N. Takahashi; H. Tamura; N. Tanaka; K. Tanida; A. Toyada; T. Watanabe; M. Yosoi; R. Zavislak

doi:10.1103/PhysRevC.77.045203

Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam

K. Miwa, S. Dairaku, D. Nakajima, S. Ajimura, J. Arvieux, H. Fujimura, H. Fujioka, T. Fukuda, H. Funahashi, M. Hayata, K. Hicks, K. Imai, S. Ishimoto, T. Kameyama, S. Kamigaito, S. Kinoshita, Takeshi Koike, Y. Ma, T. Maruta, Y. MiuraM. Miyabe, T. Nagae, T. Nakano, K. Nakazawa, M. Naruki, H. Noumi, M. Niiyama, N. Saito, Y. Sato, S. Sawada, Y. Seki, M. Sekimoto, K. Senzaka, K. Shirotori, K. Shoji, S. Suzuki, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, N. Tanaka, K. Tanida, A. Toyada, T. Watanabe, M. Yosoi, R. Zavislak

理学研究科・物理学専攻

研究成果: Article › 査読

22 被引用数 (Scopus)

抄録

The Θ+ was searched for via the K+p→π+X reaction using the 1.2 GeV/c K+ beam at the K6 beam line of the KEK-PS 12 GeV Proton Synchrotron. In the missing mass spectrum of the K+p→π+X reaction, no clear peak structure was observed. Therefore a 90% C.L. upper limit of 3.5 μb/sr was derived for the differential cross section averaged over 2° to 22° in the laboratory frame of the K+p→π+Θ+ reaction. This upper limit is much smaller than the theoretical calculation for the t-channel process where a K0* is exchanged. From the present result, either the t-channel process is excluded or the coupling constant of gK*NΘ is quite small.

本文言語	English
論文番号	045203
ジャーナル	Physical Review C - Nuclear Physics
巻	77
号	4
DOI	https://doi.org/10.1103/PhysRevC.77.045203
出版ステータス	Published - 2008 4月 14

ASJC Scopus subject areas

核物理学および高エネルギー物理学

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10.1103/PhysRevC.77.045203

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引用スタイル

Miwa, K., Dairaku, S., Nakajima, D., Ajimura, S., Arvieux, J., Fujimura, H., Fujioka, H., Fukuda, T., Funahashi, H., Hayata, M., Hicks, K., Imai, K., Ishimoto, S., Kameyama, T., Kamigaito, S., Kinoshita, S., Koike, T., Ma, Y., Maruta, T., ... Zavislak, R. (2008). Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam. Physical Review C - Nuclear Physics, 77(4), [045203]. https://doi.org/10.1103/PhysRevC.77.045203

Miwa, K, Dairaku, S, Nakajima, D, Ajimura, S, Arvieux, J, Fujimura, H, Fujioka, H, Fukuda, T, Funahashi, H, Hayata, M, Hicks, K, Imai, K, Ishimoto, S, Kameyama, T, Kamigaito, S, Kinoshita, S, Koike, T, Ma, Y, Maruta, T, Miura, Y, Miyabe, M, Nagae, T, Nakano, T, Nakazawa, K, Naruki, M, Noumi, H, Niiyama, M, Saito, N, Sato, Y, Sawada, S, Seki, Y, Sekimoto, M, Senzaka, K, Shirotori, K, Shoji, K, Suzuki, S, Takahashi, H, Takahashi, T, Takahashi, TN, Tamura, H, Tanaka, N, Tanida, K, Toyada, A, Watanabe, T, Yosoi, M & Zavislak, R 2008, 'Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam', Physical Review C - Nuclear Physics, vol. 77, no. 4, 045203. https://doi.org/10.1103/PhysRevC.77.045203

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title = "Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam",

abstract = "The Θ+ was searched for via the K+p→π+X reaction using the 1.2 GeV/c K+ beam at the K6 beam line of the KEK-PS 12 GeV Proton Synchrotron. In the missing mass spectrum of the K+p→π+X reaction, no clear peak structure was observed. Therefore a 90% C.L. upper limit of 3.5 μb/sr was derived for the differential cross section averaged over 2° to 22° in the laboratory frame of the K+p→π+Θ+ reaction. This upper limit is much smaller than the theoretical calculation for the t-channel process where a K0* is exchanged. From the present result, either the t-channel process is excluded or the coupling constant of gK*NΘ is quite small.",

author = "K. Miwa and S. Dairaku and D. Nakajima and S. Ajimura and J. Arvieux and H. Fujimura and H. Fujioka and T. Fukuda and H. Funahashi and M. Hayata and K. Hicks and K. Imai and S. Ishimoto and T. Kameyama and S. Kamigaito and S. Kinoshita and Takeshi Koike and Y. Ma and T. Maruta and Y. Miura and M. Miyabe and T. Nagae and T. Nakano and K. Nakazawa and M. Naruki and H. Noumi and M. Niiyama and N. Saito and Y. Sato and S. Sawada and Y. Seki and M. Sekimoto and K. Senzaka and K. Shirotori and K. Shoji and S. Suzuki and H. Takahashi and T. Takahashi and Takahashi, {T. N.} and H. Tamura and N. Tanaka and K. Tanida and A. Toyada and T. Watanabe and M. Yosoi and R. Zavislak",

year = "2008",

month = apr,

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doi = "10.1103/PhysRevC.77.045203",

language = "English",

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T1 - Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam

AU - Miwa, K.

AU - Dairaku, S.

AU - Nakajima, D.

AU - Ajimura, S.

AU - Arvieux, J.

AU - Fujimura, H.

AU - Fujioka, H.

AU - Fukuda, T.

AU - Funahashi, H.

AU - Hayata, M.

AU - Hicks, K.

AU - Imai, K.

AU - Ishimoto, S.

AU - Kameyama, T.

AU - Kamigaito, S.

AU - Kinoshita, S.

AU - Koike, Takeshi

AU - Ma, Y.

AU - Maruta, T.

AU - Miura, Y.

AU - Miyabe, M.

AU - Nagae, T.

AU - Nakano, T.

AU - Nakazawa, K.

AU - Naruki, M.

AU - Noumi, H.

AU - Niiyama, M.

AU - Saito, N.

AU - Sato, Y.

AU - Sawada, S.

AU - Seki, Y.

AU - Sekimoto, M.

AU - Senzaka, K.

AU - Shirotori, K.

AU - Shoji, K.

AU - Suzuki, S.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Takahashi, T. N.

AU - Tamura, H.

AU - Tanaka, N.

AU - Tanida, K.

AU - Toyada, A.

AU - Watanabe, T.

AU - Yosoi, M.

AU - Zavislak, R.

PY - 2008/4/14

Y1 - 2008/4/14

N2 - The Θ+ was searched for via the K+p→π+X reaction using the 1.2 GeV/c K+ beam at the K6 beam line of the KEK-PS 12 GeV Proton Synchrotron. In the missing mass spectrum of the K+p→π+X reaction, no clear peak structure was observed. Therefore a 90% C.L. upper limit of 3.5 μb/sr was derived for the differential cross section averaged over 2° to 22° in the laboratory frame of the K+p→π+Θ+ reaction. This upper limit is much smaller than the theoretical calculation for the t-channel process where a K0* is exchanged. From the present result, either the t-channel process is excluded or the coupling constant of gK*NΘ is quite small.

AB - The Θ+ was searched for via the K+p→π+X reaction using the 1.2 GeV/c K+ beam at the K6 beam line of the KEK-PS 12 GeV Proton Synchrotron. In the missing mass spectrum of the K+p→π+X reaction, no clear peak structure was observed. Therefore a 90% C.L. upper limit of 3.5 μb/sr was derived for the differential cross section averaged over 2° to 22° in the laboratory frame of the K+p→π+Θ+ reaction. This upper limit is much smaller than the theoretical calculation for the t-channel process where a K0* is exchanged. From the present result, either the t-channel process is excluded or the coupling constant of gK*NΘ is quite small.

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U2 - 10.1103/PhysRevC.77.045203

DO - 10.1103/PhysRevC.77.045203

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SN - 0556-2813

VL - 77

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 045203

ER -

Search for the Θ+ via the K+p→π+X reaction with a 1.2 GeV/c K+ beam

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