Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV

M. Niiyama; H. Fujimura; D. S. Ahn; J. K. Ahn; S. Ajimura; H. C. Bhang; T. H. Chang; W. C. Chang; J. Y. Chen; S. Daté; S. Fukui; H. Funahashi; K. Hicks; K. Horie; T. Hotta; K. Imai; T. Ishikawa; Y. Kato; K. Kino; H. Kohri; S. Makino; T. Matsumura; T. Mibe; K. Miwa; M. Miyabe; N. Muramatsu; M. Nakamura; T. Nakano; Y. Nakatsugawa; Y. Ohashi; D. S. Oshuev; J. D. Parker; N. Saito; T. Sawada; Y. Sugaya; M. Sumihama; J. L. Tang; M. Uchida; C. W. Wang; T. Yorita; M. Yosoi

doi:10.1103/PhysRevC.78.035202

Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV

M. Niiyama, H. Fujimura, D. S. Ahn, J. K. Ahn, S. Ajimura, H. C. Bhang, T. H. Chang, W. C. Chang, J. Y. Chen, S. Daté, S. Fukui, H. Funahashi, K. Hicks, K. Horie, T. Hotta, K. Imai, T. Ishikawa, Y. Kato, K. Kino, H. KohriS. Makino, T. Matsumura, T. Mibe, K. Miwa, M. Miyabe, N. Muramatsu, M. Nakamura, T. Nakano, Y. Nakatsugawa, Y. Ohashi, D. S. Oshuev, J. D. Parker, N. Saito, T. Sawada, Y. Sugaya, M. Sumihama, J. L. Tang, M. Uchida, C. W. Wang, T. Yorita, M. Yosoi

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Abstract

Differential cross sections for γp→K+Λ(1405) and γp→K+Σ0(1385) reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of 0.8<cos(Θ)<1.0 for the K+ scattering angle in the center-of-mass system. This data is the first measurement of the Λ(1405) photoproduction cross section. The line shapes of Λ(1405) measured in Σ+π- and Σ-π+ decay modes were different with each other, indicating a strong interference of the isospin 0 and 1 terms of the Σπ scattering amplitudes. The ratios of Λ(1405) production to Σ0(1385) production were measured in two photon energy ranges: near the production threshold (1.5<Eγ<2.0 GeV) and far from it (2.0<Eγ<2.4 GeV). The observed ratio decreased in the higher photon energy region, which may suggest different production mechanisms and internal structures for these hyperon resonances.

Original language	English
Article number	035202
Journal	Physical Review C - Nuclear Physics
Volume	78
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.78.035202
Publication status	Published - 2008 Sept 9
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.78.035202

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Niiyama, M., Fujimura, H., Ahn, D. S., Ahn, J. K., Ajimura, S., Bhang, H. C., Chang, T. H., Chang, W. C., Chen, J. Y., Daté, S., Fukui, S., Funahashi, H., Hicks, K., Horie, K., Hotta, T., Imai, K., Ishikawa, T., Kato, Y., Kino, K., ... Yosoi, M. (2008). Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV. Physical Review C - Nuclear Physics, 78(3), Article 035202. https://doi.org/10.1103/PhysRevC.78.035202

Niiyama, M, Fujimura, H, Ahn, DS, Ahn, JK, Ajimura, S, Bhang, HC, Chang, TH, Chang, WC, Chen, JY, Daté, S, Fukui, S, Funahashi, H, Hicks, K, Horie, K, Hotta, T, Imai, K, Ishikawa, T, Kato, Y, Kino, K, Kohri, H, Makino, S, Matsumura, T, Mibe, T, Miwa, K, Miyabe, M, Muramatsu, N, Nakamura, M, Nakano, T, Nakatsugawa, Y, Ohashi, Y, Oshuev, DS, Parker, JD, Saito, N, Sawada, T, Sugaya, Y, Sumihama, M, Tang, JL, Uchida, M, Wang, CW, Yorita, T & Yosoi, M 2008, 'Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV', Physical Review C - Nuclear Physics, vol. 78, no. 3, 035202. https://doi.org/10.1103/PhysRevC.78.035202

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title = "Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV",

abstract = "Differential cross sections for γp→K+Λ(1405) and γp→K+Σ0(1385) reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of 0.8",

author = "M. Niiyama and H. Fujimura and Ahn, {D. S.} and Ahn, {J. K.} and S. Ajimura and Bhang, {H. C.} and Chang, {T. H.} and Chang, {W. C.} and Chen, {J. Y.} and S. Dat{\'e} and S. Fukui and H. Funahashi and K. Hicks and K. Horie and T. Hotta and K. Imai and T. Ishikawa and Y. Kato and K. Kino and H. Kohri and S. Makino and T. Matsumura and T. Mibe and K. Miwa and M. Miyabe and N. Muramatsu and M. Nakamura and T. Nakano and Y. Nakatsugawa and Y. Ohashi and Oshuev, {D. S.} and Parker, {J. D.} and N. Saito and T. Sawada and Y. Sugaya and M. Sumihama and Tang, {J. L.} and M. Uchida and Wang, {C. W.} and T. Yorita and M. Yosoi",

year = "2008",

month = sep,

day = "9",

doi = "10.1103/PhysRevC.78.035202",

language = "English",

volume = "78",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

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T1 - Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV

AU - Niiyama, M.

AU - Fujimura, H.

AU - Ahn, D. S.

AU - Ahn, J. K.

AU - Ajimura, S.

AU - Bhang, H. C.

AU - Chang, T. H.

AU - Chang, W. C.

AU - Chen, J. Y.

AU - Daté, S.

AU - Fukui, S.

AU - Funahashi, H.

AU - Hicks, K.

AU - Horie, K.

AU - Hotta, T.

AU - Imai, K.

AU - Ishikawa, T.

AU - Kato, Y.

AU - Kino, K.

AU - Kohri, H.

AU - Makino, S.

AU - Matsumura, T.

AU - Mibe, T.

AU - Miwa, K.

AU - Miyabe, M.

AU - Muramatsu, N.

AU - Nakamura, M.

AU - Nakano, T.

AU - Nakatsugawa, Y.

AU - Ohashi, Y.

AU - Oshuev, D. S.

AU - Parker, J. D.

AU - Saito, N.

AU - Sawada, T.

AU - Sugaya, Y.

AU - Sumihama, M.

AU - Tang, J. L.

AU - Uchida, M.

AU - Wang, C. W.

AU - Yorita, T.

AU - Yosoi, M.

PY - 2008/9/9

Y1 - 2008/9/9

N2 - Differential cross sections for γp→K+Λ(1405) and γp→K+Σ0(1385) reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of 0.8

AB - Differential cross sections for γp→K+Λ(1405) and γp→K+Σ0(1385) reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of 0.8

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U2 - 10.1103/PhysRevC.78.035202

DO - 10.1103/PhysRevC.78.035202

M3 - Article

AN - SCOPUS:51849122455

SN - 0556-2813

VL - 78

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 3

M1 - 035202

ER -

Photoproduction of Λ(1405) and Σ0(1385) on the proton at Eγ=1.5-2.4 GeV

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