Measurement of neutral pion photoproduction off the proton with the large acceptance electromagnetic calorimeter BGOegg

LEPS2/BGOegg Collaboration

doi:10.1103/PhysRevC.100.055202

Measurement of neutral pion photoproduction off the proton with the large acceptance electromagnetic calorimeter BGOegg

LEPS2/BGOegg Collaboration

Department of Physics

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

10 Citations (Scopus)

Abstract

Differential cross sections and photon beam asymmetries for the reaction γp→π0p have been measured in the photon beam energy range of 1.3-2.4GeV and the π0 polar angle range of -1<cosθπ0c.m.<0.7. The measurement has been done by using a large acceptance electromagnetic calorimeter in the SPring-8 LEPS2/BGOegg experiment. The results of the photon beam asymmetry in a wide π0 polar angle range are new for the photon beam energies exceeding 1.9GeV. None of the existing partial wave analysis models describe the observed asymmetries in the high energy region. The contribution of multipole amplitudes with an orbital angular momentum of 5 in the πN system has been found to be important at these energies.

Original language	English
Article number	055202
Journal	Physical Review C
Volume	100
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.100.055202
Publication status	Published - 2019 Nov 8

Bibliographical note

Publisher Copyright:
© 2019 American Physical Society.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.100.055202

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title = "Measurement of neutral pion photoproduction off the proton with the large acceptance electromagnetic calorimeter BGOegg",

abstract = "Differential cross sections and photon beam asymmetries for the reaction γp→π0p have been measured in the photon beam energy range of 1.3-2.4GeV and the π0 polar angle range of -1",

author = "{LEPS2/BGOegg Collaboration} and N. Muramatsu and Ahn, {J. K.} and Chang, {W. C.} and Chen, {J. Y.} and Chu, {M. L.} and S. Dat{\'e} and T. Gogami and H. Goto and H. Hamano and T. Hashimoto and He, {Q. H.} and K. Hicks and T. Hiraiwa and Y. Honda and T. Hotta and H. Ikuno and Y. Inoue and T. Ishikawa and I. Jaegle and Jo, {J. M.} and Y. Kasamatsu and H. Katsuragawa and S. Kido and Y. Kon and S. Masumoto and Y. Matsumura and M. Miyabe and K. Mizutani and T. Nakamura and T. Nakano and T. Nam and Ngan, {T. N.T.} and M. Niiyama and Y. Nozawa and Y. Ohashi and H. Ohnishi and T. Ohta and K. Ozawa and C. Rangacharyulu and Ryu, {S. Y.} and Y. Sada and M. Sasagawa and T. Shibukawa and H. Shimizu and R. Shirai and K. Shiraishi and Strokovsky, {E. A.} and Y. Sugaya and M. Sumihama and S. Suzuki",

note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = nov,

day = "8",

doi = "10.1103/PhysRevC.100.055202",

language = "English",

volume = "100",

journal = "Physical Review C",

issn = "2469-9985",

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TY - JOUR

T1 - Measurement of neutral pion photoproduction off the proton with the large acceptance electromagnetic calorimeter BGOegg

AU - LEPS2/BGOegg Collaboration

AU - Muramatsu, N.

AU - Ahn, J. K.

AU - Chang, W. C.

AU - Chen, J. Y.

AU - Chu, M. L.

AU - Daté, S.

AU - Gogami, T.

AU - Goto, H.

AU - Hamano, H.

AU - Hashimoto, T.

AU - He, Q. H.

AU - Hicks, K.

AU - Hiraiwa, T.

AU - Honda, Y.

AU - Hotta, T.

AU - Ikuno, H.

AU - Inoue, Y.

AU - Ishikawa, T.

AU - Jaegle, I.

AU - Jo, J. M.

AU - Kasamatsu, Y.

AU - Katsuragawa, H.

AU - Kido, S.

AU - Kon, Y.

AU - Masumoto, S.

AU - Matsumura, Y.

AU - Miyabe, M.

AU - Mizutani, K.

AU - Nakamura, T.

AU - Nakano, T.

AU - Nam, T.

AU - Ngan, T. N.T.

AU - Niiyama, M.

AU - Nozawa, Y.

AU - Ohashi, Y.

AU - Ohnishi, H.

AU - Ohta, T.

AU - Ozawa, K.

AU - Rangacharyulu, C.

AU - Ryu, S. Y.

AU - Sada, Y.

AU - Sasagawa, M.

AU - Shibukawa, T.

AU - Shimizu, H.

AU - Shirai, R.

AU - Shiraishi, K.

AU - Strokovsky, E. A.

AU - Sugaya, Y.

AU - Sumihama, M.

AU - Suzuki, S.

PY - 2019/11/8

Y1 - 2019/11/8

N2 - Differential cross sections and photon beam asymmetries for the reaction γp→π0p have been measured in the photon beam energy range of 1.3-2.4GeV and the π0 polar angle range of -1

AB - Differential cross sections and photon beam asymmetries for the reaction γp→π0p have been measured in the photon beam energy range of 1.3-2.4GeV and the π0 polar angle range of -1

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U2 - 10.1103/PhysRevC.100.055202

DO - 10.1103/PhysRevC.100.055202

M3 - Article

AN - SCOPUS:85075069153

SN - 2469-9985

VL - 100

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 055202

ER -

Measurement of neutral pion photoproduction off the proton with the large acceptance electromagnetic calorimeter BGOegg

Abstract

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ASJC Scopus subject areas

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