Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c

K. Shirotori; T. N. Takahashi; S. Adachi; M. Agnello; S. Ajimura; K. Aoki; H. C. Bhang; B. Bassalleck; E. Botta; S. Bufalino; N. Chiga; P. Evtoukhovitch; A. Feliciello; H. Fujioka; F. Hiruma; R. Honda; K. Hosomi; Y. Ichikawa; M. Ieiri; Y. Igarashi; K. Imai; N. Ishibashi; S. Ishimoto; K. Itahashi; R. Iwasaki; C. W. Joo; M. J. Kim; S. J. Kim; R. Kiuchi; T. Koike; Y. Komatsu; V. V. Kulikov; S. Marcello; S. Masumoto; K. Matsuoka; K. Miwa; M. Moritsu; T. Nagae; M. Naruki; M. Niiyama; H. Noumi; K. Ozawa; N. Saito; A. Sakaguchi; H. Sako; V. Samoilov; M. Sato; S. Sato; Y. Sato; S. Sawada; M. Sekimoto; H. Sugimura; S. Suzuki; H. Takahashi; T. Takahashi; H. Tamura; T. Tanaka; K. Tanida; A. O. Tokiyasu; N. Tomida; Z. Tsamalaidze; M. Ukai; K. Yagi; T. O. Yamamoto; S. B. Yang; Y. Yonemoto; C. J. Yoon; K. Yoshida

doi:10.1103/PhysRevLett.109.132002

Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c

K. Shirotori, T. N. Takahashi, S. Adachi, M. Agnello, S. Ajimura, K. Aoki, H. C. Bhang, B. Bassalleck, E. Botta, S. Bufalino, N. Chiga, P. Evtoukhovitch, A. Feliciello, H. Fujioka, F. Hiruma, R. Honda, K. Hosomi, Y. Ichikawa, M. Ieiri, Y. IgarashiK. Imai, N. Ishibashi, S. Ishimoto, K. Itahashi, R. Iwasaki, C. W. Joo, M. J. Kim, S. J. Kim, R. Kiuchi, T. Koike, Y. Komatsu, V. V. Kulikov, S. Marcello, S. Masumoto, K. Matsuoka, K. Miwa, M. Moritsu, T. Nagae, M. Naruki, M. Niiyama, H. Noumi, K. Ozawa, N. Saito, A. Sakaguchi, H. Sako, V. Samoilov, M. Sato, S. Sato, Y. Sato, S. Sawada, M. Sekimoto, H. Sugimura, S. Suzuki, H. Takahashi, T. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, N. Tomida, Z. Tsamalaidze, M. Ukai, K. Yagi, T. O. Yamamoto, S. B. Yang, Y. Yonemoto, C. J. Yoon, K. Yoshida

School of Earth System Sciences

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Abstract

The Θ ⁺ pentaquark baryon was searched for via the π ^-p→K ^-X reaction with a missing mass resolution of 1.4MeV/c2 (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π ^- meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92GeV/c. No peak structure corresponding to the Θ ⁺ mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26μb/sr in the mass region of 1.51-1.55GeV/c2. The upper limit of the Θ ⁺ decay width is obtained to be 0.72 and 3.1MeV for JΘP=1/2 ⁺ and JΘP=1/2 ^-, respectively, using the effective Lagrangian approach.

Original language	English
Article number	132002
Journal	Physical Review Letters
Volume	109
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.109.132002
State	Published - 26 Sep 2012

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10.1103/PhysRevLett.109.132002

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Shirotori, K., Takahashi, T. N., Adachi, S., Agnello, M., Ajimura, S., Aoki, K., Bhang, H. C., Bassalleck, B., Botta, E., Bufalino, S., Chiga, N., Evtoukhovitch, P., Feliciello, A., Fujioka, H., Hiruma, F., Honda, R., Hosomi, K., Ichikawa, Y., Ieiri, M., ... Yoshida, K. (2012). Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c. Physical Review Letters, 109(13), Article 132002. https://doi.org/10.1103/PhysRevLett.109.132002

@article{d5bd050ee82e49679080df62085ccfb4,

title = "Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c",

abstract = "The Θ + pentaquark baryon was searched for via the π -p→K -X reaction with a missing mass resolution of 1.4MeV/c2 (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π - meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92GeV/c. No peak structure corresponding to the Θ + mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26μb/sr in the mass region of 1.51-1.55GeV/c2. The upper limit of the Θ + decay width is obtained to be 0.72 and 3.1MeV for JΘP=1/2 + and JΘP=1/2 -, respectively, using the effective Lagrangian approach.",

author = "K. Shirotori and Takahashi, {T. N.} and S. Adachi and M. Agnello and S. Ajimura and K. Aoki and Bhang, {H. C.} and B. Bassalleck and E. Botta and S. Bufalino and N. Chiga and P. Evtoukhovitch and A. Feliciello and H. Fujioka and F. Hiruma and R. Honda and K. Hosomi and Y. Ichikawa and M. Ieiri and Y. Igarashi and K. Imai and N. Ishibashi and S. Ishimoto and K. Itahashi and R. Iwasaki and Joo, {C. W.} and Kim, {M. J.} and Kim, {S. J.} and R. Kiuchi and T. Koike and Y. Komatsu and Kulikov, {V. V.} and S. Marcello and S. Masumoto and K. Matsuoka and K. Miwa and M. Moritsu and T. Nagae and M. Naruki and M. Niiyama and H. Noumi and K. Ozawa and N. Saito and A. Sakaguchi and H. Sako and V. Samoilov and M. Sato and S. Sato and Y. Sato and S. Sawada and M. Sekimoto and H. Sugimura and S. Suzuki and H. Takahashi and T. Takahashi and H. Tamura and T. Tanaka and K. Tanida and Tokiyasu, {A. O.} and N. Tomida and Z. Tsamalaidze and M. Ukai and K. Yagi and Yamamoto, {T. O.} and Yang, {S. B.} and Y. Yonemoto and Yoon, {C. J.} and K. Yoshida",

year = "2012",

month = sep,

day = "26",

doi = "10.1103/PhysRevLett.109.132002",

language = "English",

volume = "109",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "13",

}

Shirotori, K, Takahashi, TN, Adachi, S, Agnello, M, Ajimura, S, Aoki, K, Bhang, HC, Bassalleck, B, Botta, E, Bufalino, S, Chiga, N, Evtoukhovitch, P, Feliciello, A, Fujioka, H, Hiruma, F, Honda, R, Hosomi, K, Ichikawa, Y, Ieiri, M, Igarashi, Y, Imai, K, Ishibashi, N, Ishimoto, S, Itahashi, K, Iwasaki, R, Joo, CW, Kim, MJ, Kim, SJ, Kiuchi, R, Koike, T, Komatsu, Y, Kulikov, VV, Marcello, S, Masumoto, S, Matsuoka, K, Miwa, K, Moritsu, M, Nagae, T, Naruki, M, Niiyama, M, Noumi, H, Ozawa, K, Saito, N, Sakaguchi, A, Sako, H, Samoilov, V, Sato, M, Sato, S, Sato, Y, Sawada, S, Sekimoto, M, Sugimura, H, Suzuki, S, Takahashi, H, Takahashi, T, Tamura, H, Tanaka, T, Tanida, K, Tokiyasu, AO, Tomida, N, Tsamalaidze, Z, Ukai, M, Yagi, K, Yamamoto, TO, Yang, SB, Yonemoto, Y, Yoon, CJ & Yoshida, K 2012, 'Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c', Physical Review Letters, vol. 109, no. 13, 132002. https://doi.org/10.1103/PhysRevLett.109.132002

TY - JOUR

T1 - Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c

AU - Shirotori, K.

AU - Takahashi, T. N.

AU - Adachi, S.

AU - Agnello, M.

AU - Ajimura, S.

AU - Aoki, K.

AU - Bhang, H. C.

AU - Bassalleck, B.

AU - Botta, E.

AU - Bufalino, S.

AU - Chiga, N.

AU - Evtoukhovitch, P.

AU - Feliciello, A.

AU - Fujioka, H.

AU - Hiruma, F.

AU - Honda, R.

AU - Hosomi, K.

AU - Ichikawa, Y.

AU - Ieiri, M.

AU - Igarashi, Y.

AU - Imai, K.

AU - Ishibashi, N.

AU - Ishimoto, S.

AU - Itahashi, K.

AU - Iwasaki, R.

AU - Joo, C. W.

AU - Kim, M. J.

AU - Kim, S. J.

AU - Kiuchi, R.

AU - Koike, T.

AU - Komatsu, Y.

AU - Kulikov, V. V.

AU - Marcello, S.

AU - Masumoto, S.

AU - Matsuoka, K.

AU - Miwa, K.

AU - Moritsu, M.

AU - Nagae, T.

AU - Naruki, M.

AU - Niiyama, M.

AU - Noumi, H.

AU - Ozawa, K.

AU - Saito, N.

AU - Sakaguchi, A.

AU - Sako, H.

AU - Samoilov, V.

AU - Sato, M.

AU - Sato, S.

AU - Sato, Y.

AU - Sawada, S.

AU - Sekimoto, M.

AU - Sugimura, H.

AU - Suzuki, S.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Tamura, H.

AU - Tanaka, T.

AU - Tanida, K.

AU - Tokiyasu, A. O.

AU - Tomida, N.

AU - Tsamalaidze, Z.

AU - Ukai, M.

AU - Yagi, K.

AU - Yamamoto, T. O.

AU - Yang, S. B.

AU - Yonemoto, Y.

AU - Yoon, C. J.

AU - Yoshida, K.

PY - 2012/9/26

Y1 - 2012/9/26

N2 - The Θ + pentaquark baryon was searched for via the π -p→K -X reaction with a missing mass resolution of 1.4MeV/c2 (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π - meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92GeV/c. No peak structure corresponding to the Θ + mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26μb/sr in the mass region of 1.51-1.55GeV/c2. The upper limit of the Θ + decay width is obtained to be 0.72 and 3.1MeV for JΘP=1/2 + and JΘP=1/2 -, respectively, using the effective Lagrangian approach.

AB - The Θ + pentaquark baryon was searched for via the π -p→K -X reaction with a missing mass resolution of 1.4MeV/c2 (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π - meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92GeV/c. No peak structure corresponding to the Θ + mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26μb/sr in the mass region of 1.51-1.55GeV/c2. The upper limit of the Θ + decay width is obtained to be 0.72 and 3.1MeV for JΘP=1/2 + and JΘP=1/2 -, respectively, using the effective Lagrangian approach.

UR - http://www.scopus.com/inward/record.url?scp=84866673849&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.109.132002

DO - 10.1103/PhysRevLett.109.132002

M3 - Article

AN - SCOPUS:84866673849

SN - 0031-9007

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 132002

ER -

Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c

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