First measurement of the helicity-dependent γ→p→ → pη differential cross-section

J. Ahrens; S. Altieri; J. R.M. Annand; G. Anton; H. J. Arends; K. Aulenbacher; R. Beck; C. Bradtke; A. Braghieri; N. D'Hose; D. Drechsel; H. Dutz; S. Goertz; P. Grabmayr; K. Hansen; J. Harmsen; D. Von Harrach; S. Hasegawa; T. Hasegawa; E. Heid; K. Helbing; H. Holvoet; L. Van Hoorebeke; N. Horikawa; T. Iwata; O. Jahn; P. Jennewein; T. Kageya; B. Kiel; F. Klein; R. Kondratiev; K. Kossert; J. Krimmer; M. Lang; B. Lannoy; R. Leukel; V. Lisin; T. Matsuda; J. C. McGeorge; A. Meier; D. Menze; W. Meyer; T. Michel; J. Naumann; A. Panzeri; P. Pedroni; T. Pinelli; I. Preobrajenski; E. Radtke; E. Reichert; G. Reicherz; Ch Rohlof; G. Rosner; D. Ryckbosch; M. Sauer; B. Schoch; M. Schumacher; B. Seitz; T. Speckner; N. Takabayashi; G. Tamas; A. Thomas; R. Van de Vyver; A. Wakai; W. Weihofen; F. Wissmann; F. Zapadtka; G. Zeitler

doi:10.1140/epja/i2002-10153-2

First measurement of the helicity-dependent γ^→p^→ → pη differential cross-section

J. Ahrens, S. Altieri, J. R.M. Annand, G. Anton, H. J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. D'Hose, D. Drechsel, H. Dutz, S. Goertz, P. Grabmayr, K. Hansen, J. Harmsen, D. Von Harrach, S. Hasegawa, T. Hasegawa, E. HeidK. Helbing, H. Holvoet, L. Van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J. C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, Ch Rohlof, G. Rosner, D. Ryckbosch, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, N. Takabayashi, G. Tamas, A. Thomas, R. Van de Vyver, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler

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Abstract

The helicity dependence of the γ^→p^→ pη reaction has been measured for the first time at a center-of-mass angle θ*_η = 70° in the photon energy range from 780 MeV to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. The helicity 3/2 cross-section is found to be small and the results for helicity 1/2 agree with predictions from the MAID analysis.

Original language	English
Pages (from-to)	241-244
Number of pages	4
Journal	European Physical Journal A
Volume	17
Issue number	2
DOIs	https://doi.org/10.1140/epja/i2002-10153-2
Publication status	Published - Jun 2003
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1140/epja/i2002-10153-2

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Ahrens, J., Altieri, S., Annand, J. R. M., Anton, G., Arends, H. J., Aulenbacher, K., Beck, R., Bradtke, C., Braghieri, A., D'Hose, N., Drechsel, D., Dutz, H., Goertz, S., Grabmayr, P., Hansen, K., Harmsen, J., Von Harrach, D., Hasegawa, S., Hasegawa, T., ... Zeitler, G. (2003). First measurement of the helicity-dependent γ^→p^→ → pη differential cross-section. European Physical Journal A, 17(2), 241-244. https://doi.org/10.1140/epja/i2002-10153-2

Ahrens, J, Altieri, S, Annand, JRM, Anton, G, Arends, HJ, Aulenbacher, K, Beck, R, Bradtke, C, Braghieri, A, D'Hose, N, Drechsel, D, Dutz, H, Goertz, S, Grabmayr, P, Hansen, K, Harmsen, J, Von Harrach, D, Hasegawa, S, Hasegawa, T, Heid, E, Helbing, K, Holvoet, H, Van Hoorebeke, L, Horikawa, N, Iwata, T, Jahn, O, Jennewein, P, Kageya, T, Kiel, B, Klein, F, Kondratiev, R, Kossert, K, Krimmer, J, Lang, M, Lannoy, B, Leukel, R, Lisin, V, Matsuda, T, McGeorge, JC, Meier, A, Menze, D, Meyer, W, Michel, T, Naumann, J, Panzeri, A, Pedroni, P, Pinelli, T, Preobrajenski, I, Radtke, E, Reichert, E, Reicherz, G, Rohlof, C, Rosner, G, Ryckbosch, D, Sauer, M, Schoch, B, Schumacher, M, Seitz, B, Speckner, T, Takabayashi, N, Tamas, G, Thomas, A, Van de Vyver, R, Wakai, A, Weihofen, W, Wissmann, F, Zapadtka, F & Zeitler, G 2003, 'First measurement of the helicity-dependent γ^→p^→ → pη differential cross-section', European Physical Journal A, vol. 17, no. 2, pp. 241-244. https://doi.org/10.1140/epja/i2002-10153-2

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title = "First measurement of the helicity-dependent γ→p→ → pη differential cross-section",

abstract = "The helicity dependence of the γ→p→ pη reaction has been measured for the first time at a center-of-mass angle θ*η = 70° in the photon energy range from 780 MeV to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. The helicity 3/2 cross-section is found to be small and the results for helicity 1/2 agree with predictions from the MAID analysis.",

author = "J. Ahrens and S. Altieri and Annand, {J. R.M.} and G. Anton and Arends, {H. J.} and K. Aulenbacher and R. Beck and C. Bradtke and A. Braghieri and N. D'Hose and D. Drechsel and H. Dutz and S. Goertz and P. Grabmayr and K. Hansen and J. Harmsen and {Von Harrach}, D. and S. Hasegawa and T. Hasegawa and E. Heid and K. Helbing and H. Holvoet and {Van Hoorebeke}, L. and N. Horikawa and T. Iwata and O. Jahn and P. Jennewein and T. Kageya and B. Kiel and F. Klein and R. Kondratiev and K. Kossert and J. Krimmer and M. Lang and B. Lannoy and R. Leukel and V. Lisin and T. Matsuda and McGeorge, {J. C.} and A. Meier and D. Menze and W. Meyer and T. Michel and J. Naumann and A. Panzeri and P. Pedroni and T. Pinelli and I. Preobrajenski and E. Radtke and E. Reichert and G. Reicherz and Ch Rohlof and G. Rosner and D. Ryckbosch and M. Sauer and B. Schoch and M. Schumacher and B. Seitz and T. Speckner and N. Takabayashi and G. Tamas and A. Thomas and {Van de Vyver}, R. and A. Wakai and W. Weihofen and F. Wissmann and F. Zapadtka and G. Zeitler",

year = "2003",

month = jun,

doi = "10.1140/epja/i2002-10153-2",

language = "English",

volume = "17",

pages = "241--244",

journal = "European Physical Journal A",

issn = "1434-6001",

number = "2",

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TY - JOUR

T1 - First measurement of the helicity-dependent γ→p→ → pη differential cross-section

AU - Ahrens, J.

AU - Altieri, S.

AU - Annand, J. R.M.

AU - Anton, G.

AU - Arends, H. J.

AU - Aulenbacher, K.

AU - Beck, R.

AU - Bradtke, C.

AU - Braghieri, A.

AU - D'Hose, N.

AU - Drechsel, D.

AU - Dutz, H.

AU - Goertz, S.

AU - Grabmayr, P.

AU - Hansen, K.

AU - Harmsen, J.

AU - Von Harrach, D.

AU - Hasegawa, S.

AU - Hasegawa, T.

AU - Heid, E.

AU - Helbing, K.

AU - Holvoet, H.

AU - Van Hoorebeke, L.

AU - Horikawa, N.

AU - Iwata, T.

AU - Jahn, O.

AU - Jennewein, P.

AU - Kageya, T.

AU - Kiel, B.

AU - Klein, F.

AU - Kondratiev, R.

AU - Kossert, K.

AU - Krimmer, J.

AU - Lang, M.

AU - Lannoy, B.

AU - Leukel, R.

AU - Lisin, V.

AU - Matsuda, T.

AU - McGeorge, J. C.

AU - Meier, A.

AU - Menze, D.

AU - Meyer, W.

AU - Michel, T.

AU - Naumann, J.

AU - Panzeri, A.

AU - Pedroni, P.

AU - Pinelli, T.

AU - Preobrajenski, I.

AU - Radtke, E.

AU - Reichert, E.

AU - Reicherz, G.

AU - Rohlof, Ch

AU - Rosner, G.

AU - Ryckbosch, D.

AU - Sauer, M.

AU - Schoch, B.

AU - Schumacher, M.

AU - Seitz, B.

AU - Speckner, T.

AU - Takabayashi, N.

AU - Tamas, G.

AU - Thomas, A.

AU - Van de Vyver, R.

AU - Wakai, A.

AU - Weihofen, W.

AU - Wissmann, F.

AU - Zapadtka, F.

AU - Zeitler, G.

PY - 2003/6

Y1 - 2003/6

N2 - The helicity dependence of the γ→p→ pη reaction has been measured for the first time at a center-of-mass angle θ*η = 70° in the photon energy range from 780 MeV to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. The helicity 3/2 cross-section is found to be small and the results for helicity 1/2 agree with predictions from the MAID analysis.

AB - The helicity dependence of the γ→p→ pη reaction has been measured for the first time at a center-of-mass angle θ*η = 70° in the photon energy range from 780 MeV to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. The helicity 3/2 cross-section is found to be small and the results for helicity 1/2 agree with predictions from the MAID analysis.

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UR - http://www.scopus.com/inward/citedby.url?scp=1242334901&partnerID=8YFLogxK

U2 - 10.1140/epja/i2002-10153-2

DO - 10.1140/epja/i2002-10153-2

M3 - Article

AN - SCOPUS:1242334901

SN - 1434-6001

VL - 17

SP - 241

EP - 244

JO - European Physical Journal A

JF - European Physical Journal A

IS - 2

ER -

First measurement of the helicity-dependent γ^→p^→ → pη differential cross-section

Abstract

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