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; T. 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, T. 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

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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.

Original language	English
Article number	045203
Journal	Physical Review C - Nuclear Physics
Volume	77
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.77.045203
Publication status	Published - 2008 Apr 14

Access to Document

10.1103/PhysRevC.77.045203

Cite this

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), Article 045203. https://doi.org/10.1103/PhysRevC.77.045203

@article{b0ddadd971b545559a874e4e1ba1f1ed,

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 T. 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,

day = "14",

doi = "10.1103/PhysRevC.77.045203",

language = "English",

volume = "77",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "4",

}

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

TY - JOUR

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, T.

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.

UR - http://www.scopus.com/inward/record.url?scp=42349097120&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42349097120&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.77.045203

DO - 10.1103/PhysRevC.77.045203

M3 - Article

AN - SCOPUS:42349097120

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this