Beam-helicity asymmetry in associated electroproduction of real photons \(ep \to e\gamma \pi N\) in the \(\Delta\)-resonance region

The beam-helicity asymmetry in associated electroproduction of real photons, \(ep\to e\gamma \pi N\), in the \(\Delta\)(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extr...

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Published in:arXiv.org 2014-02
Main Authors: The HERMES Collaboration, Airapetian, A, Akopov, N, Augustyniak, W, Avakian, R, Avetissian, A, Avetisyan, E, Blok, H P, Böttcher, H, Borissov, A, Bowles, J, Brodski, I, Bryzgalov, V, Burns, J, Cisbani, E, Ciullo, G, Contalbrigo, M, Dalpiaz, P F, Deconinck, W, De Leo, R, De Sanctis, E, Diefenthaler, M, P Di Nezza, Düren, M, Ehrenfried, M, Elbakian, G, Etzelmüller, E, Frullani, S, Gapienko, G, Gapienko, V, J Garay García, Garibaldi, F, Gavrilov, G, Gharibyan, V, Giordano, F, Gliske, S, Hartig, M, Holler, Y, Hristova, I, Jackson, H E, Joosten, S, Kaiser, R, Kinney, E, Kisselev, A, Korotkov, V, Kravchenko, P, Krivokhijine, V G, Lagamba, L, Lapikás, L, Lehmann, I, Lenisa, P, Lorenzon, W, X -G Lu, -Q, B, Mahon, D, Makins, N C R, Manaenkov, S I, Mao, Y, Marianski, B, Marukyan, H, Miller, C A, Miyachi, Y, Movsisyan, A, Muccifora, V, Murray, M, Naryshkin, Y, Nass, A, Negodaev, M, W -D Nowak, Pappalardo, L L, Perez-Benito, R, Petrosyan, A, Reimer, P E, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubin, J, Ryckbosch, D, Salomatin, Y, Schnell, G, Seitz, B, T -A Shibata, Stahl, M, Statera, M, Steffens, E, Steijger, J J M, Stewart, J, Stinzing, F, Terkulov, A, Tytgat, M, C Van Hulse, Vikhrov, V, Vilardi, I, Wang, S, Z Ye, Yen, S, Zagrebelnyy, V, Zihlmann, B, Zupranski, P
Format: Article
Language:English
Subjects:
Amplitudes
Asymmetry
Helicity
Photons
Positron beams
Recoil
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creator The HERMES Collaboration
Airapetian, A
Akopov, N
Augustyniak, W
Avakian, R
Avetissian, A
Avetisyan, E
Blok, H P
Böttcher, H
Borissov, A
Bowles, J
Brodski, I
Bryzgalov, V
Burns, J
Cisbani, E
Ciullo, G
Contalbrigo, M
Dalpiaz, P F
Deconinck, W
De Leo, R
De Sanctis, E
Diefenthaler, M
P Di Nezza
Düren, M
Ehrenfried, M
Elbakian, G
Etzelmüller, E
Frullani, S
Gapienko, G
Gapienko, V
J Garay García
Garibaldi, F
Gavrilov, G
Gharibyan, V
Giordano, F
Gliske, S
Hartig, M
Holler, Y
Hristova, I
Jackson, H E
Joosten, S
Kaiser, R
Kinney, E
Kisselev, A
Korotkov, V
Kravchenko, P
Krivokhijine, V G
Lagamba, L
Lapikás, L
Lehmann, I
Lenisa, P
Lorenzon, W
X -G Lu
-Q, B
Mahon, D
Makins, N C R
Manaenkov, S I
Mao, Y
Marianski, B
Marukyan, H
Miller, C A
Miyachi, Y
Movsisyan, A
Muccifora, V
Murray, M
Naryshkin, Y
Nass, A
Negodaev, M
W -D Nowak
Pappalardo, L L
Perez-Benito, R
Petrosyan, A
Reimer, P E
Riedl, C
Rith, K
Rosner, G
Rostomyan, A
Rubin, J
Ryckbosch, D
Salomatin, Y
Schnell, G
Seitz, B
T -A Shibata
Stahl, M
Statera, M
Steffens, E
Steijger, J J M
Stewart, J
Stinzing, F
Terkulov, A
Tytgat, M
C Van Hulse
Vikhrov, V
Vilardi, I
Wang, S
Z Ye
Yen, S
Zagrebelnyy, V
Zihlmann, B
Zupranski, P
description The beam-helicity asymmetry in associated electroproduction of real photons, \(ep\to e\gamma \pi N\), in the \(\Delta\)(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, \(ep\to e\gamma \pi^0 p\) and \(ep\to e\gamma \pi^+ n\), from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.
doi_str_mv 10.48550/arxiv.1310.5081
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B</creatorcontrib><creatorcontrib>Zupranski, P</creatorcontrib><title>Beam-helicity asymmetry in associated electroproduction of real photons \(ep \to e\gamma \pi N\) in the \(\Delta\)-resonance region</title><title>arXiv.org</title><description>The beam-helicity asymmetry in associated electroproduction of real photons, \(ep\to e\gamma \pi N\), in the \(\Delta\)(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, \(ep\to e\gamma \pi^0 p\) and \(ep\to e\gamma \pi^+ n\), from a data set collected with a recoil detector. 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arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20140211</creationdate><title>Beam-helicity asymmetry in associated electroproduction of real photons \(ep \to e\gamma \pi N\) in the \(\Delta\)-resonance region</title><author>The HERMES Collaboration ; Airapetian, A ; Akopov, N ; Augustyniak, W ; Avakian, R ; Avetissian, A ; Avetisyan, E ; Blok, H P ; Böttcher, H ; Borissov, A ; Bowles, J ; Brodski, I ; Bryzgalov, V ; Burns, J ; Cisbani, E ; Ciullo, G ; Contalbrigo, M ; Dalpiaz, P F ; Deconinck, W ; De Leo, R ; De Sanctis, E ; Diefenthaler, M ; P Di Nezza ; Düren, M ; Ehrenfried, M ; Elbakian, G ; Etzelmüller, E ; Frullani, S ; Gapienko, G ; Gapienko, V ; J Garay García ; Garibaldi, F ; Gavrilov, G ; Gharibyan, V ; Giordano, F ; Gliske, S ; Hartig, M ; Holler, Y ; Hristova, I ; Jackson, H E ; Joosten, S ; Kaiser, R ; Kinney, E ; Kisselev, A ; Korotkov, V ; Kravchenko, P ; Krivokhijine, V G ; Lagamba, L ; Lapikás, L ; Lehmann, I ; Lenisa, P ; Lorenzon, W ; X -G Lu ; -Q, B ; Mahon, D ; Makins, N C R ; Manaenkov, S I ; Mao, Y ; Marianski, B ; Marukyan, H ; Miller, C A ; Miyachi, Y ; Movsisyan, A ; Muccifora, V ; Murray, M ; Naryshkin, Y ; Nass, A ; Negodaev, M ; W -D Nowak ; Pappalardo, L L ; Perez-Benito, R ; Petrosyan, A ; Reimer, P E ; Riedl, C ; Rith, K ; Rosner, G ; Rostomyan, A ; Rubin, J ; Ryckbosch, D ; Salomatin, Y ; Schnell, G ; Seitz, B ; T -A Shibata ; Stahl, M ; Statera, M ; Steffens, E ; Steijger, J J M ; Stewart, J ; Stinzing, F ; Terkulov, A ; Tytgat, M ; C Van Hulse ; Vikhrov, V ; Vilardi, I ; Wang, S ; Z Ye ; Yen, S ; Zagrebelnyy, V ; Zihlmann, B ; Zupranski, 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Y</creatorcontrib><creatorcontrib>Marianski, B</creatorcontrib><creatorcontrib>Marukyan, H</creatorcontrib><creatorcontrib>Miller, C A</creatorcontrib><creatorcontrib>Miyachi, Y</creatorcontrib><creatorcontrib>Movsisyan, A</creatorcontrib><creatorcontrib>Muccifora, V</creatorcontrib><creatorcontrib>Murray, M</creatorcontrib><creatorcontrib>Naryshkin, Y</creatorcontrib><creatorcontrib>Nass, A</creatorcontrib><creatorcontrib>Negodaev, M</creatorcontrib><creatorcontrib>W -D Nowak</creatorcontrib><creatorcontrib>Pappalardo, L L</creatorcontrib><creatorcontrib>Perez-Benito, R</creatorcontrib><creatorcontrib>Petrosyan, A</creatorcontrib><creatorcontrib>Reimer, P E</creatorcontrib><creatorcontrib>Riedl, C</creatorcontrib><creatorcontrib>Rith, K</creatorcontrib><creatorcontrib>Rosner, G</creatorcontrib><creatorcontrib>Rostomyan, A</creatorcontrib><creatorcontrib>Rubin, J</creatorcontrib><creatorcontrib>Ryckbosch, D</creatorcontrib><creatorcontrib>Salomatin, 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Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>The HERMES Collaboration</au><au>Airapetian, A</au><au>Akopov, N</au><au>Augustyniak, W</au><au>Avakian, R</au><au>Avetissian, A</au><au>Avetisyan, E</au><au>Blok, H P</au><au>Böttcher, H</au><au>Borissov, A</au><au>Bowles, J</au><au>Brodski, I</au><au>Bryzgalov, V</au><au>Burns, J</au><au>Cisbani, E</au><au>Ciullo, G</au><au>Contalbrigo, M</au><au>Dalpiaz, P F</au><au>Deconinck, W</au><au>De Leo, R</au><au>De Sanctis, E</au><au>Diefenthaler, M</au><au>P Di Nezza</au><au>Düren, M</au><au>Ehrenfried, M</au><au>Elbakian, G</au><au>Etzelmüller, E</au><au>Frullani, S</au><au>Gapienko, G</au><au>Gapienko, V</au><au>J Garay García</au><au>Garibaldi, F</au><au>Gavrilov, G</au><au>Gharibyan, V</au><au>Giordano, F</au><au>Gliske, S</au><au>Hartig, M</au><au>Holler, Y</au><au>Hristova, I</au><au>Jackson, H E</au><au>Joosten, S</au><au>Kaiser, R</au><au>Kinney, E</au><au>Kisselev, A</au><au>Korotkov, V</au><au>Kravchenko, P</au><au>Krivokhijine, V G</au><au>Lagamba, L</au><au>Lapikás, L</au><au>Lehmann, I</au><au>Lenisa, P</au><au>Lorenzon, W</au><au>X -G Lu</au><au>-Q, B</au><au>Mahon, D</au><au>Makins, N C R</au><au>Manaenkov, S I</au><au>Mao, Y</au><au>Marianski, B</au><au>Marukyan, H</au><au>Miller, C A</au><au>Miyachi, Y</au><au>Movsisyan, A</au><au>Muccifora, V</au><au>Murray, M</au><au>Naryshkin, Y</au><au>Nass, A</au><au>Negodaev, M</au><au>W -D Nowak</au><au>Pappalardo, L L</au><au>Perez-Benito, R</au><au>Petrosyan, A</au><au>Reimer, P E</au><au>Riedl, C</au><au>Rith, K</au><au>Rosner, G</au><au>Rostomyan, A</au><au>Rubin, J</au><au>Ryckbosch, D</au><au>Salomatin, Y</au><au>Schnell, G</au><au>Seitz, B</au><au>T -A Shibata</au><au>Stahl, M</au><au>Statera, M</au><au>Steffens, E</au><au>Steijger, J J M</au><au>Stewart, J</au><au>Stinzing, F</au><au>Terkulov, A</au><au>Tytgat, M</au><au>C Van Hulse</au><au>Vikhrov, V</au><au>Vilardi, I</au><au>Wang, S</au><au>Z Ye</au><au>Yen, S</au><au>Zagrebelnyy, V</au><au>Zihlmann, B</au><au>Zupranski, P</au><format>book</format><genre>document</genre><ristype>GEN</ristype><atitle>Beam-helicity asymmetry in associated electroproduction of real photons \(ep \to e\gamma \pi N\) in the \(\Delta\)-resonance region</atitle><jtitle>arXiv.org</jtitle><date>2014-02-11</date><risdate>2014</risdate><eissn>2331-8422</eissn><abstract>The beam-helicity asymmetry in associated electroproduction of real photons, \(ep\to e\gamma \pi N\), in the \(\Delta\)(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, \(ep\to e\gamma \pi^0 p\) and \(ep\to e\gamma \pi^+ n\), from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1310.5081</doi><oa>free_for_read</oa></addata></record>
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subjects Amplitudes
Asymmetry
Helicity
Photons
Positron beams
Recoil
title Beam-helicity asymmetry in associated electroproduction of real photons \(ep \to e\gamma \pi N\) in the \(\Delta\)-resonance region
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