The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV

M. Sumihama; J. K. Ahn; H. Akimune; Y. Asano; C. Bennhold; W. C. Chang; T. Corthals; S. Daté; H. Ejiri; H. Fujimura; M. Fujiwara; M. Guidal; K. Hicks; T. Hotta; K. Imai; T. Ishikawa; T. Iwata; H. Kawai; Z. Y. Kim; K. Kino; H. Kohri; N. Kumagai; S. Makino; T. Mart; T. Matsumura; N. Matsuoka; T. Mibe; M. Miyabe; Y. Miyachi; M. Morita; N. Muramatsu; T. Nakano; M. Niiyama; M. Nomachi; Y. Ohashi; T. Ooba; H. Ohkuma; D. S. Oshuev; C. Rangacharyulu; A. Sakaguchi; T. Sasaki; P. M. Shagin; Y. Shiino; H. Shimizu; Y. Sugaya; H. Toyokawa; A. Wakai; C. W. Wang; S. C. Wang; K. Yonehara; T. Yorita; M. Yosoi; R. G.T. Zegers

doi:10.1103/PhysRevC.73.035214

The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV

M. Sumihama, J. K. Ahn, H. Akimune, Y. Asano, C. Bennhold, W. C. Chang, T. Corthals, S. Daté, H. Ejiri, H. Fujimura, M. Fujiwara, M. Guidal, K. Hicks, T. Hotta, K. Imai, T. Ishikawa, T. Iwata, H. Kawai, Z. Y. Kim, K. KinoH. Kohri, N. Kumagai, S. Makino, T. Mart, T. Matsumura, N. Matsuoka, T. Mibe, M. Miyabe, Y. Miyachi, M. Morita, N. Muramatsu, T. Nakano, M. Niiyama, M. Nomachi, Y. Ohashi, T. Ooba, H. Ohkuma, D. S. Oshuev, C. Rangacharyulu, A. Sakaguchi, T. Sasaki, P. M. Shagin, Y. Shiino, H. Shimizu, Y. Sugaya, H. Toyokawa, A. Wakai, C. W. Wang, S. C. Wang, K. Yonehara, T. Yorita, M. Yosoi, R. G.T. Zegers

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

179 Citations (Scopus)

Abstract

Differential cross sections and photon-beam asymmetries for the γ→p→K+Λ and γ→p→K+Σ0 reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and in the angular range from Θc.m.=0° to 60° of the K+ scattering angle in the center-of-mass system at the SPring-8/LEPS facility. The photon-beam asymmetries for both the reactions have been found to be positive and to increase with the photon energy. The measured differential cross sections agree with the data measured by the CLAS Collaboration at cosΘc.m.<0.9 within the experimental uncertainties, but the discrepancy with the SAPHIR data for the K+Λ reaction is large at cosΘc.m.>0.9. In the K+Λ reaction, the resonance-like structure found in the CLAS and SAPHIR data at W=1.96 GeV is confirmed. The differential cross sections at forward angles suggest a strong K-exchange contribution in the t-channel for the K+Λ reaction, but not for the K+Σ0 reaction.

Original language	English
Article number	035214
Journal	Physical Review C - Nuclear Physics
Volume	73
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.73.035214
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevC.73.035214

Cite this

Sumihama, M., Ahn, J. K., Akimune, H., Asano, Y., Bennhold, C., Chang, W. C., Corthals, T., Daté, S., Ejiri, H., Fujimura, H., Fujiwara, M., Guidal, M., Hicks, K., Hotta, T., Imai, K., Ishikawa, T., Iwata, T., Kawai, H., Kim, Z. Y., ... Zegers, R. G. T. (2006). The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV. Physical Review C - Nuclear Physics, 73(3), [035214]. https://doi.org/10.1103/PhysRevC.73.035214

Sumihama, M, Ahn, JK, Akimune, H, Asano, Y, Bennhold, C, Chang, WC, Corthals, T, Daté, S, Ejiri, H, Fujimura, H, Fujiwara, M, Guidal, M, Hicks, K, Hotta, T, Imai, K, Ishikawa, T, Iwata, T, Kawai, H, Kim, ZY, Kino, K, Kohri, H, Kumagai, N, Makino, S, Mart, T, Matsumura, T, Matsuoka, N, Mibe, T, Miyabe, M, Miyachi, Y, Morita, M, Muramatsu, N, Nakano, T, Niiyama, M, Nomachi, M, Ohashi, Y, Ooba, T, Ohkuma, H, Oshuev, DS, Rangacharyulu, C, Sakaguchi, A, Sasaki, T, Shagin, PM, Shiino, Y, Shimizu, H, Sugaya, Y, Toyokawa, H, Wakai, A, Wang, CW, Wang, SC, Yonehara, K, Yorita, T, Yosoi, M & Zegers, RGT 2006, 'The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV', Physical Review C - Nuclear Physics, vol. 73, no. 3, 035214. https://doi.org/10.1103/PhysRevC.73.035214

@article{2466d6d493c447a8a2f382c0fd49b9f6,

title = "The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV",

abstract = "Differential cross sections and photon-beam asymmetries for the γ→p→K+Λ and γ→p→K+Σ0 reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and in the angular range from Θc.m.=0° to 60° of the K+ scattering angle in the center-of-mass system at the SPring-8/LEPS facility. The photon-beam asymmetries for both the reactions have been found to be positive and to increase with the photon energy. The measured differential cross sections agree with the data measured by the CLAS Collaboration at cosΘc.m.<0.9 within the experimental uncertainties, but the discrepancy with the SAPHIR data for the K+Λ reaction is large at cosΘc.m.>0.9. In the K+Λ reaction, the resonance-like structure found in the CLAS and SAPHIR data at W=1.96 GeV is confirmed. The differential cross sections at forward angles suggest a strong K-exchange contribution in the t-channel for the K+Λ reaction, but not for the K+Σ0 reaction.",

author = "M. Sumihama and Ahn, {J. K.} and H. Akimune and Y. Asano and C. Bennhold and Chang, {W. C.} and T. Corthals and S. Dat{\'e} and H. Ejiri and H. Fujimura and M. Fujiwara and M. Guidal and K. Hicks and T. Hotta and K. Imai and T. Ishikawa and T. Iwata and H. Kawai and Kim, {Z. Y.} and K. Kino and H. Kohri and N. Kumagai and S. Makino and T. Mart and T. Matsumura and N. Matsuoka and T. Mibe and M. Miyabe and Y. Miyachi and M. Morita and N. Muramatsu and T. Nakano and M. Niiyama and M. Nomachi and Y. Ohashi and T. Ooba and H. Ohkuma and Oshuev, {D. S.} and C. Rangacharyulu and A. Sakaguchi and T. Sasaki and Shagin, {P. M.} and Y. Shiino and H. Shimizu and Y. Sugaya and H. Toyokawa and A. Wakai and Wang, {C. W.} and Wang, {S. C.} and K. Yonehara and T. Yorita and M. Yosoi and Zegers, {R. G.T.}",

year = "2006",

doi = "10.1103/PhysRevC.73.035214",

language = "English",

volume = "73",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV

AU - Sumihama, M.

AU - Ahn, J. K.

AU - Akimune, H.

AU - Asano, Y.

AU - Bennhold, C.

AU - Chang, W. C.

AU - Corthals, T.

AU - Daté, S.

AU - Ejiri, H.

AU - Fujimura, H.

AU - Fujiwara, M.

AU - Guidal, M.

AU - Hicks, K.

AU - Hotta, T.

AU - Imai, K.

AU - Ishikawa, T.

AU - Iwata, T.

AU - Kawai, H.

AU - Kim, Z. Y.

AU - Kino, K.

AU - Kohri, H.

AU - Kumagai, N.

AU - Makino, S.

AU - Mart, T.

AU - Matsumura, T.

AU - Matsuoka, N.

AU - Mibe, T.

AU - Miyabe, M.

AU - Miyachi, Y.

AU - Morita, M.

AU - Muramatsu, N.

AU - Nakano, T.

AU - Niiyama, M.

AU - Nomachi, M.

AU - Ohashi, Y.

AU - Ooba, T.

AU - Ohkuma, H.

AU - Oshuev, D. S.

AU - Rangacharyulu, C.

AU - Sakaguchi, A.

AU - Sasaki, T.

AU - Shagin, P. M.

AU - Shiino, Y.

AU - Shimizu, H.

AU - Sugaya, Y.

AU - Toyokawa, H.

AU - Wakai, A.

AU - Wang, C. W.

AU - Wang, S. C.

AU - Yonehara, K.

AU - Yorita, T.

AU - Yosoi, M.

AU - Zegers, R. G.T.

PY - 2006

Y1 - 2006

N2 - Differential cross sections and photon-beam asymmetries for the γ→p→K+Λ and γ→p→K+Σ0 reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and in the angular range from Θc.m.=0° to 60° of the K+ scattering angle in the center-of-mass system at the SPring-8/LEPS facility. The photon-beam asymmetries for both the reactions have been found to be positive and to increase with the photon energy. The measured differential cross sections agree with the data measured by the CLAS Collaboration at cosΘc.m.<0.9 within the experimental uncertainties, but the discrepancy with the SAPHIR data for the K+Λ reaction is large at cosΘc.m.>0.9. In the K+Λ reaction, the resonance-like structure found in the CLAS and SAPHIR data at W=1.96 GeV is confirmed. The differential cross sections at forward angles suggest a strong K-exchange contribution in the t-channel for the K+Λ reaction, but not for the K+Σ0 reaction.

AB - Differential cross sections and photon-beam asymmetries for the γ→p→K+Λ and γ→p→K+Σ0 reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and in the angular range from Θc.m.=0° to 60° of the K+ scattering angle in the center-of-mass system at the SPring-8/LEPS facility. The photon-beam asymmetries for both the reactions have been found to be positive and to increase with the photon energy. The measured differential cross sections agree with the data measured by the CLAS Collaboration at cosΘc.m.<0.9 within the experimental uncertainties, but the discrepancy with the SAPHIR data for the K+Λ reaction is large at cosΘc.m.>0.9. In the K+Λ reaction, the resonance-like structure found in the CLAS and SAPHIR data at W=1.96 GeV is confirmed. The differential cross sections at forward angles suggest a strong K-exchange contribution in the t-channel for the K+Λ reaction, but not for the K+Σ0 reaction.

UR - http://www.scopus.com/inward/record.url?scp=33645471055&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.73.035214

DO - 10.1103/PhysRevC.73.035214

M3 - Article

AN - SCOPUS:33645471055

SN - 0556-2813

VL - 73

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 3

M1 - 035214

ER -

The γ→p→K+Λ and γ→p→K+Σ0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this