Double-polarization observable G in neutral-pion photoproduction off the proton

. This paper reports on a measurement of the double-polarization observable G in π 0 photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bonn. The observable G is determined from reactions of linearly polarized photons with longitudinally polarized protons. The...

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Veröffentlicht in:	The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2017, Vol.53 (1), p.1-12, Article 8
Hauptverfasser:	Thiel, A., Eberhardt, H., Lang, M., Afzal, F., Anisovich, A. V., Bantes, B., Bayadilov, D., Beck, R., Bichow, M., Brinkmann, K. -T., Böse, S., Crede, V., Dieterle, M., Dutz, H., Elsner, D., Ewald, R., Fornet-Ponse, K., Friedrich, St, Frommberger, F., Funke, Ch, Goertz, St, Gottschall, M., Gridnev, A., Grüner, M., Gutz, E., Hammann, D., Hammann, Ch, Hannappel, J., Hartmann, J., Hillert, W., Hoffmeister, Ph, Honisch, Ch, Jude, T., Kaiser, D., Kalinowsky, H., Kalischewski, F., Kammer, S., Keshelashvili, I., Klassen, P., Kleber, V., Klein, F., Klempt, E., Koop, K., Krusche, B., Kube, M., Lopatin, I., Mahlberg, Ph, Makonyi, K., Metag, V., Meyer, W., Müller, J., Müllers, J., Nanova, M., Nikonov, V., Piontek, D., Reeve, S., Reicherz, G., Runkel, S., Sarantsev, A., Schmidt, Ch, Schmieden, H., Seifen, T., Sokhoyan, V., Spieker, K., Thoma, U., Urban, M., van Pee, H., Walther, D., Wendel, Ch, Wilson, A., Winnebeck, A., Witthauer, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bremsstrahlung Butanol Diamonds Hadrons Heavy Ions Multipoles Nuclear Fusion Nuclear Physics Particle and Nuclear Physics Photons Photoproduction Physics Physics and Astronomy Polarization Regular Article - Experimental Physics
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creator	Thiel, A. Eberhardt, H. Lang, M. Afzal, F. Anisovich, A. V. Bantes, B. Bayadilov, D. Beck, R. Bichow, M. Brinkmann, K. -T. Böse, S. Crede, V. Dieterle, M. Dutz, H. Elsner, D. Ewald, R. Fornet-Ponse, K. Friedrich, St Frommberger, F. Funke, Ch Goertz, St Gottschall, M. Gridnev, A. Grüner, M. Gutz, E. Hammann, D. Hammann, Ch Hannappel, J. Hartmann, J. Hillert, W. Hoffmeister, Ph Honisch, Ch Jude, T. Kaiser, D. Kalinowsky, H. Kalischewski, F. Kammer, S. Keshelashvili, I. Klassen, P. Kleber, V. Klein, F. Klempt, E. Koop, K. Krusche, B. Kube, M. Lopatin, I. Mahlberg, Ph Makonyi, K. Metag, V. Meyer, W. Müller, J. Müllers, J. Nanova, M. Nikonov, V. Piontek, D. Reeve, S. Reicherz, G. Runkel, S. Sarantsev, A. Schmidt, Ch Schmieden, H. Seifen, T. Sokhoyan, V. Spieker, K. Thoma, U. Urban, M. van Pee, H. Walther, D. Wendel, Ch Wilson, A. Winnebeck, A. Witthauer, L.
description	. This paper reports on a measurement of the double-polarization observable G in π 0 photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bonn. The observable G is determined from reactions of linearly polarized photons with longitudinally polarized protons. The polarized photons are produced by bremsstrahlung off a diamond radiator of well-defined orientation. A frozen spin butanol target provides the polarized protons. The data cover the photon energy range from 617 to 1325 MeV and a wide angular range. The experimental results for G are compared to predictions by the Bonn-Gatchina (BnGa), Jülich-Bonn (JüBo), MAID and SAID partial wave analyses. Implications of the new data for the pion photoproduction multipoles are discussed.
doi_str_mv	10.1140/epja/i2017-12194-8
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V. ; Bantes, B. ; Bayadilov, D. ; Beck, R. ; Bichow, M. ; Brinkmann, K. -T. ; Böse, S. ; Crede, V. ; Dieterle, M. ; Dutz, H. ; Elsner, D. ; Ewald, R. ; Fornet-Ponse, K. ; Friedrich, St ; Frommberger, F. ; Funke, Ch ; Goertz, St ; Gottschall, M. ; Gridnev, A. ; Grüner, M. ; Gutz, E. ; Hammann, D. ; Hammann, Ch ; Hannappel, J. ; Hartmann, J. ; Hillert, W. ; Hoffmeister, Ph ; Honisch, Ch ; Jude, T. ; Kaiser, D. ; Kalinowsky, H. ; Kalischewski, F. ; Kammer, S. ; Keshelashvili, I. ; Klassen, P. ; Kleber, V. ; Klein, F. ; Klempt, E. ; Koop, K. ; Krusche, B. ; Kube, M. ; Lopatin, I. ; Mahlberg, Ph ; Makonyi, K. ; Metag, V. ; Meyer, W. ; Müller, J. ; Müllers, J. ; Nanova, M. ; Nikonov, V. ; Piontek, D. ; Reeve, S. ; Reicherz, G. ; Runkel, S. ; Sarantsev, A. ; Schmidt, Ch ; Schmieden, H. ; Seifen, T. ; Sokhoyan, V. ; Spieker, K. ; Thoma, U. ; Urban, M. ; van Pee, H. ; Walther, D. ; Wendel, Ch ; Wilson, A. ; Winnebeck, A. ; Witthauer, L.</creator><creatorcontrib>Thiel, A. ; Eberhardt, H. ; Lang, M. ; Afzal, F. ; Anisovich, A. V. ; Bantes, B. ; Bayadilov, D. ; Beck, R. ; Bichow, M. ; Brinkmann, K. -T. ; Böse, S. ; Crede, V. ; Dieterle, M. ; Dutz, H. ; Elsner, D. ; Ewald, R. ; Fornet-Ponse, K. ; Friedrich, St ; Frommberger, F. ; Funke, Ch ; Goertz, St ; Gottschall, M. ; Gridnev, A. ; Grüner, M. ; Gutz, E. ; Hammann, D. ; Hammann, Ch ; Hannappel, J. ; Hartmann, J. ; Hillert, W. ; Hoffmeister, Ph ; Honisch, Ch ; Jude, T. ; Kaiser, D. ; Kalinowsky, H. ; Kalischewski, F. ; Kammer, S. ; Keshelashvili, I. ; Klassen, P. ; Kleber, V. ; Klein, F. ; Klempt, E. ; Koop, K. ; Krusche, B. ; Kube, M. ; Lopatin, I. ; Mahlberg, Ph ; Makonyi, K. ; Metag, V. ; Meyer, W. ; Müller, J. ; Müllers, J. ; Nanova, M. ; Nikonov, V. ; Piontek, D. ; Reeve, S. ; Reicherz, G. ; Runkel, S. ; Sarantsev, A. ; Schmidt, Ch ; Schmieden, H. ; Seifen, T. ; Sokhoyan, V. ; Spieker, K. ; Thoma, U. ; Urban, M. ; van Pee, H. ; Walther, D. ; Wendel, Ch ; Wilson, A. ; Winnebeck, A. ; Witthauer, L. ; The CBELSA/TAPS Collaboration</creatorcontrib><description>. This paper reports on a measurement of the double-polarization observable G in π 0 photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bonn. The observable G is determined from reactions of linearly polarized photons with longitudinally polarized protons. The polarized photons are produced by bremsstrahlung off a diamond radiator of well-defined orientation. A frozen spin butanol target provides the polarized protons. The data cover the photon energy range from 617 to 1325 MeV and a wide angular range. The experimental results for G are compared to predictions by the Bonn-Gatchina (BnGa), Jülich-Bonn (JüBo), MAID and SAID partial wave analyses. Implications of the new data for the pion photoproduction multipoles are discussed.</description><identifier>ISSN: 1434-6001</identifier><identifier>EISSN: 1434-601X</identifier><identifier>DOI: 10.1140/epja/i2017-12194-8</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Bremsstrahlung ; Butanol ; Diamonds ; Hadrons ; Heavy Ions ; Multipoles ; Nuclear Fusion ; Nuclear Physics ; Particle and Nuclear Physics ; Photons ; Photoproduction ; Physics ; Physics and Astronomy ; Polarization ; Regular Article - Experimental Physics</subject><ispartof>The European physical journal. 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V.</creatorcontrib><creatorcontrib>Bantes, B.</creatorcontrib><creatorcontrib>Bayadilov, D.</creatorcontrib><creatorcontrib>Beck, R.</creatorcontrib><creatorcontrib>Bichow, M.</creatorcontrib><creatorcontrib>Brinkmann, K. -T.</creatorcontrib><creatorcontrib>Böse, S.</creatorcontrib><creatorcontrib>Crede, V.</creatorcontrib><creatorcontrib>Dieterle, M.</creatorcontrib><creatorcontrib>Dutz, H.</creatorcontrib><creatorcontrib>Elsner, D.</creatorcontrib><creatorcontrib>Ewald, R.</creatorcontrib><creatorcontrib>Fornet-Ponse, K.</creatorcontrib><creatorcontrib>Friedrich, St</creatorcontrib><creatorcontrib>Frommberger, F.</creatorcontrib><creatorcontrib>Funke, Ch</creatorcontrib><creatorcontrib>Goertz, St</creatorcontrib><creatorcontrib>Gottschall, M.</creatorcontrib><creatorcontrib>Gridnev, A.</creatorcontrib><creatorcontrib>Grüner, M.</creatorcontrib><creatorcontrib>Gutz, E.</creatorcontrib><creatorcontrib>Hammann, D.</creatorcontrib><creatorcontrib>Hammann, Ch</creatorcontrib><creatorcontrib>Hannappel, J.</creatorcontrib><creatorcontrib>Hartmann, J.</creatorcontrib><creatorcontrib>Hillert, W.</creatorcontrib><creatorcontrib>Hoffmeister, Ph</creatorcontrib><creatorcontrib>Honisch, Ch</creatorcontrib><creatorcontrib>Jude, T.</creatorcontrib><creatorcontrib>Kaiser, D.</creatorcontrib><creatorcontrib>Kalinowsky, H.</creatorcontrib><creatorcontrib>Kalischewski, F.</creatorcontrib><creatorcontrib>Kammer, S.</creatorcontrib><creatorcontrib>Keshelashvili, I.</creatorcontrib><creatorcontrib>Klassen, P.</creatorcontrib><creatorcontrib>Kleber, V.</creatorcontrib><creatorcontrib>Klein, F.</creatorcontrib><creatorcontrib>Klempt, E.</creatorcontrib><creatorcontrib>Koop, K.</creatorcontrib><creatorcontrib>Krusche, B.</creatorcontrib><creatorcontrib>Kube, M.</creatorcontrib><creatorcontrib>Lopatin, I.</creatorcontrib><creatorcontrib>Mahlberg, Ph</creatorcontrib><creatorcontrib>Makonyi, K.</creatorcontrib><creatorcontrib>Metag, V.</creatorcontrib><creatorcontrib>Meyer, W.</creatorcontrib><creatorcontrib>Müller, J.</creatorcontrib><creatorcontrib>Müllers, J.</creatorcontrib><creatorcontrib>Nanova, M.</creatorcontrib><creatorcontrib>Nikonov, V.</creatorcontrib><creatorcontrib>Piontek, D.</creatorcontrib><creatorcontrib>Reeve, S.</creatorcontrib><creatorcontrib>Reicherz, G.</creatorcontrib><creatorcontrib>Runkel, S.</creatorcontrib><creatorcontrib>Sarantsev, A.</creatorcontrib><creatorcontrib>Schmidt, Ch</creatorcontrib><creatorcontrib>Schmieden, H.</creatorcontrib><creatorcontrib>Seifen, T.</creatorcontrib><creatorcontrib>Sokhoyan, V.</creatorcontrib><creatorcontrib>Spieker, K.</creatorcontrib><creatorcontrib>Thoma, U.</creatorcontrib><creatorcontrib>Urban, M.</creatorcontrib><creatorcontrib>van Pee, H.</creatorcontrib><creatorcontrib>Walther, D.</creatorcontrib><creatorcontrib>Wendel, Ch</creatorcontrib><creatorcontrib>Wilson, A.</creatorcontrib><creatorcontrib>Winnebeck, A.</creatorcontrib><creatorcontrib>Witthauer, L.</creatorcontrib><creatorcontrib>The CBELSA/TAPS Collaboration</creatorcontrib><title>Double-polarization observable G in neutral-pion photoproduction off the proton</title><title>The European physical journal. A, Hadrons and nuclei</title><addtitle>Eur. Phys. J. A</addtitle><description>. This paper reports on a measurement of the double-polarization observable G in π 0 photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bonn. The observable G is determined from reactions of linearly polarized photons with longitudinally polarized protons. The polarized photons are produced by bremsstrahlung off a diamond radiator of well-defined orientation. A frozen spin butanol target provides the polarized protons. The data cover the photon energy range from 617 to 1325 MeV and a wide angular range. The experimental results for G are compared to predictions by the Bonn-Gatchina (BnGa), Jülich-Bonn (JüBo), MAID and SAID partial wave analyses. Implications of the new data for the pion photoproduction multipoles are discussed.</description><subject>Bremsstrahlung</subject><subject>Butanol</subject><subject>Diamonds</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Multipoles</subject><subject>Nuclear Fusion</subject><subject>Nuclear Physics</subject><subject>Particle and Nuclear Physics</subject><subject>Photons</subject><subject>Photoproduction</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Polarization</subject><subject>Regular Article - Experimental Physics</subject><issn>1434-6001</issn><issn>1434-601X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LxDAQhoMouK7-AU8Fz3EzbT6ao6y6CgteFLyFNE7cLrWpSSvor7e7FfHiaYaZ9wMeQs6BXQJwtsBuaxd1zkBRyEFzWh6QGfCCU8ng-fB3Z3BMTlLaMsZ4ruWMPFyHoWqQdqGxsf6yfR3aLFQJ44cd79kqq9usxaGPtqHd7tltQh-6GF4GN4m9z_oNZuOpD-0pOfK2SXj2M-fk6fbmcXlH1w-r--XVmroCdE9BWy68KBlWwufAlVMI4KXVwjNUVtmCK14WKEBKVlS2VE46ROeY0JX0xZxcTLlj7fuAqTfbMMR2rDRQlkxpqYUYVfmkcjGkFNGbLtZvNn4aYGYHzuzAmT04swdnytFUTKY0ittXjH-i_3d9A-Owc80</recordid><startdate>2017</startdate><enddate>2017</enddate><creator>Thiel, A.</creator><creator>Eberhardt, H.</creator><creator>Lang, M.</creator><creator>Afzal, F.</creator><creator>Anisovich, A. V.</creator><creator>Bantes, B.</creator><creator>Bayadilov, D.</creator><creator>Beck, R.</creator><creator>Bichow, M.</creator><creator>Brinkmann, K. -T.</creator><creator>Böse, S.</creator><creator>Crede, V.</creator><creator>Dieterle, M.</creator><creator>Dutz, H.</creator><creator>Elsner, D.</creator><creator>Ewald, R.</creator><creator>Fornet-Ponse, K.</creator><creator>Friedrich, St</creator><creator>Frommberger, F.</creator><creator>Funke, Ch</creator><creator>Goertz, St</creator><creator>Gottschall, M.</creator><creator>Gridnev, A.</creator><creator>Grüner, M.</creator><creator>Gutz, E.</creator><creator>Hammann, D.</creator><creator>Hammann, Ch</creator><creator>Hannappel, J.</creator><creator>Hartmann, J.</creator><creator>Hillert, W.</creator><creator>Hoffmeister, Ph</creator><creator>Honisch, Ch</creator><creator>Jude, T.</creator><creator>Kaiser, D.</creator><creator>Kalinowsky, H.</creator><creator>Kalischewski, F.</creator><creator>Kammer, S.</creator><creator>Keshelashvili, I.</creator><creator>Klassen, P.</creator><creator>Kleber, V.</creator><creator>Klein, F.</creator><creator>Klempt, E.</creator><creator>Koop, K.</creator><creator>Krusche, B.</creator><creator>Kube, M.</creator><creator>Lopatin, I.</creator><creator>Mahlberg, Ph</creator><creator>Makonyi, K.</creator><creator>Metag, V.</creator><creator>Meyer, W.</creator><creator>Müller, J.</creator><creator>Müllers, J.</creator><creator>Nanova, M.</creator><creator>Nikonov, V.</creator><creator>Piontek, D.</creator><creator>Reeve, S.</creator><creator>Reicherz, G.</creator><creator>Runkel, S.</creator><creator>Sarantsev, A.</creator><creator>Schmidt, Ch</creator><creator>Schmieden, H.</creator><creator>Seifen, T.</creator><creator>Sokhoyan, V.</creator><creator>Spieker, K.</creator><creator>Thoma, U.</creator><creator>Urban, M.</creator><creator>van Pee, H.</creator><creator>Walther, D.</creator><creator>Wendel, Ch</creator><creator>Wilson, A.</creator><creator>Winnebeck, A.</creator><creator>Witthauer, L.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2017</creationdate><title>Double-polarization observable G in neutral-pion photoproduction off the proton</title><author>Thiel, A. ; Eberhardt, H. ; Lang, M. ; Afzal, F. ; Anisovich, A. V. ; Bantes, B. ; Bayadilov, D. ; Beck, R. ; Bichow, M. ; Brinkmann, K. -T. ; Böse, S. ; Crede, V. ; Dieterle, M. ; Dutz, H. ; Elsner, D. ; Ewald, R. ; Fornet-Ponse, K. ; Friedrich, St ; Frommberger, F. ; Funke, Ch ; Goertz, St ; Gottschall, M. ; Gridnev, A. ; Grüner, M. ; Gutz, E. ; Hammann, D. ; Hammann, Ch ; Hannappel, J. ; Hartmann, J. ; Hillert, W. ; Hoffmeister, Ph ; Honisch, Ch ; Jude, T. ; Kaiser, D. ; Kalinowsky, H. ; Kalischewski, F. ; Kammer, S. ; Keshelashvili, I. ; Klassen, P. ; Kleber, V. ; Klein, F. ; Klempt, E. ; Koop, K. ; Krusche, B. ; Kube, M. ; Lopatin, I. ; Mahlberg, Ph ; Makonyi, K. ; Metag, V. ; Meyer, W. ; Müller, J. ; Müllers, J. ; Nanova, M. ; Nikonov, V. ; Piontek, D. ; Reeve, S. ; Reicherz, G. ; Runkel, S. ; Sarantsev, A. ; Schmidt, Ch ; Schmieden, H. ; Seifen, T. ; Sokhoyan, V. ; Spieker, K. ; Thoma, U. ; Urban, M. ; van Pee, H. ; Walther, D. ; Wendel, Ch ; Wilson, A. ; Winnebeck, A. ; Witthauer, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-19a45f580eb5f2147c7e11f6a95f0e7a7a347483e516603ba87c6ceecc059b6f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Bremsstrahlung</topic><topic>Butanol</topic><topic>Diamonds</topic><topic>Hadrons</topic><topic>Heavy Ions</topic><topic>Multipoles</topic><topic>Nuclear Fusion</topic><topic>Nuclear Physics</topic><topic>Particle and Nuclear Physics</topic><topic>Photons</topic><topic>Photoproduction</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Polarization</topic><topic>Regular Article - Experimental Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Thiel, A.</creatorcontrib><creatorcontrib>Eberhardt, H.</creatorcontrib><creatorcontrib>Lang, M.</creatorcontrib><creatorcontrib>Afzal, F.</creatorcontrib><creatorcontrib>Anisovich, A. 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A, Hadrons and nuclei</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Thiel, A.</au><au>Eberhardt, H.</au><au>Lang, M.</au><au>Afzal, F.</au><au>Anisovich, A. V.</au><au>Bantes, B.</au><au>Bayadilov, D.</au><au>Beck, R.</au><au>Bichow, M.</au><au>Brinkmann, K. -T.</au><au>Böse, S.</au><au>Crede, V.</au><au>Dieterle, M.</au><au>Dutz, H.</au><au>Elsner, D.</au><au>Ewald, R.</au><au>Fornet-Ponse, K.</au><au>Friedrich, St</au><au>Frommberger, F.</au><au>Funke, Ch</au><au>Goertz, St</au><au>Gottschall, M.</au><au>Gridnev, A.</au><au>Grüner, M.</au><au>Gutz, E.</au><au>Hammann, D.</au><au>Hammann, Ch</au><au>Hannappel, J.</au><au>Hartmann, J.</au><au>Hillert, W.</au><au>Hoffmeister, Ph</au><au>Honisch, Ch</au><au>Jude, T.</au><au>Kaiser, D.</au><au>Kalinowsky, H.</au><au>Kalischewski, F.</au><au>Kammer, S.</au><au>Keshelashvili, I.</au><au>Klassen, P.</au><au>Kleber, V.</au><au>Klein, F.</au><au>Klempt, E.</au><au>Koop, K.</au><au>Krusche, B.</au><au>Kube, M.</au><au>Lopatin, I.</au><au>Mahlberg, Ph</au><au>Makonyi, K.</au><au>Metag, V.</au><au>Meyer, W.</au><au>Müller, J.</au><au>Müllers, J.</au><au>Nanova, M.</au><au>Nikonov, V.</au><au>Piontek, D.</au><au>Reeve, S.</au><au>Reicherz, G.</au><au>Runkel, S.</au><au>Sarantsev, A.</au><au>Schmidt, Ch</au><au>Schmieden, H.</au><au>Seifen, T.</au><au>Sokhoyan, V.</au><au>Spieker, K.</au><au>Thoma, U.</au><au>Urban, M.</au><au>van Pee, H.</au><au>Walther, D.</au><au>Wendel, Ch</au><au>Wilson, A.</au><au>Winnebeck, A.</au><au>Witthauer, L.</au><aucorp>The CBELSA/TAPS Collaboration</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Double-polarization observable G in neutral-pion photoproduction off the proton</atitle><jtitle>The European physical journal. A, Hadrons and nuclei</jtitle><stitle>Eur. Phys. J. A</stitle><date>2017</date><risdate>2017</risdate><volume>53</volume><issue>1</issue><spage>1</spage><epage>12</epage><pages>1-12</pages><artnum>8</artnum><issn>1434-6001</issn><eissn>1434-601X</eissn><abstract>. This paper reports on a measurement of the double-polarization observable G in π 0 photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bonn. The observable G is determined from reactions of linearly polarized photons with longitudinally polarized protons. The polarized photons are produced by bremsstrahlung off a diamond radiator of well-defined orientation. A frozen spin butanol target provides the polarized protons. The data cover the photon energy range from 617 to 1325 MeV and a wide angular range. The experimental results for G are compared to predictions by the Bonn-Gatchina (BnGa), Jülich-Bonn (JüBo), MAID and SAID partial wave analyses. Implications of the new data for the pion photoproduction multipoles are discussed.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1140/epja/i2017-12194-8</doi><tpages>12</tpages></addata></record>
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subjects	Bremsstrahlung Butanol Diamonds Hadrons Heavy Ions Multipoles Nuclear Fusion Nuclear Physics Particle and Nuclear Physics Photons Photoproduction Physics Physics and Astronomy Polarization Regular Article - Experimental Physics
title	Double-polarization observable G in neutral-pion photoproduction off the proton
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