Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region

A. Airapetian; N. Akopov; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetisyan; H. P. Blok; H. Böttcher; A. Borissov; J. Bowles; I. Brodski; V. Bryzgalov; J. Burns; G. P. Capitani; E. Cisbani; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; W. Deconinck; R. De Leo; E. De Sanctis; M. Diefenthaler; P. Di Nezza; M. Düren; M. Ehrenfried; G. Elbakian; F. Ellinghaus; E. Etzelmüller; R. Fabbri; S. Frullani; G. Gapienko; V. Gapienko; J. Garay García; F. Garibaldi; G. Gavrilov; V. Gharibyan; F. Giordano; S. Gliske; M. Hartig; D. Hasch; Y. Holler; I. Hristova; A. Ivanilov; H. E. Jackson; S. Joosten; R. Kaiser; G. Karyan; T. Keri; E. Kinney; A. Kisselev; V. Korotkov; V. Kozlov; P. Kravchenko; V. G. Krivokhijine; L. Lagamba; L. Lapikás; I. Lehmann; P. Lenisa; W. Lorenzon; X. G. Lu; B. Q. Ma; D. Mahon; N. C.R. Makins; S. I. Manaenkov; Y. Mao; B. Marianski; H. Marukyan; C. A. Miller; Y. Miyachi; A. Movsisyan; V. Muccifora; M. Murray; A. Mussgiller; Y. Naryshkin; A. Nass; M. Negodaev; W. D. Nowak; L. L. Pappalardo; R. Perez-Benito; A. Petrosyan; P. E. Reimer; A. R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; J. Rubin; D. Ryckbosch; Y. Salomatin; A. Schäfer; G. Schnell; B. Seitz; T. A. Shibata; M. Stahl; M. Statera; E. Steffens; J. J.M. Steijger; J. Stewart; F. Stinzing; S. Taroian; A. Terkulov; R. Truty; A. Trzcinski; M. Tytgat; Y. Van Haarlem; C. Van Hulse; V. Vikhrov; I. Vilardi; S. Wang; S. Yaschenko; Z. Ye; S. Yen; V. Zagrebelnyy; B. Zihlmann; P. Zupranski

doi:10.1007/JHEP01(2014)077

Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region

A. Airapetian, N. Akopov, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetisyan, H. P. Blok, H. Böttcher, A. Borissov, J. Bowles, I. Brodski, V. Bryzgalov, J. Burns, G. P. Capitani, E. Cisbani, G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, W. DeconinckR. De Leo, E. De Sanctis, M. Diefenthaler, P. Di Nezza, M. Düren, M. Ehrenfried, G. Elbakian, F. Ellinghaus, E. Etzelmüller, R. Fabbri, S. Frullani, G. Gapienko, V. Gapienko, J. Garay García, F. Garibaldi, G. Gavrilov, V. Gharibyan, F. Giordano, S. Gliske, M. Hartig, D. Hasch, Y. Holler, I. Hristova, A. Ivanilov, H. E. Jackson, S. Joosten, R. Kaiser, G. Karyan, T. Keri, E. Kinney, A. Kisselev, V. Korotkov, V. Kozlov, P. Kravchenko, V. G. Krivokhijine, L. Lagamba, L. Lapikás, I. Lehmann, P. Lenisa, W. Lorenzon, X. G. Lu, B. Q. Ma, D. Mahon, N. C.R. Makins, S. I. Manaenkov, Y. Mao, B. Marianski, H. Marukyan, C. A. Miller, Y. Miyachi, A. Movsisyan, V. Muccifora, M. Murray, A. Mussgiller, Y. Naryshkin, A. Nass, M. Negodaev, W. D. Nowak, L. L. Pappalardo, R. Perez-Benito, A. Petrosyan, P. E. Reimer, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, J. Rubin, D. Ryckbosch, Y. Salomatin, A. Schäfer, G. Schnell, B. Seitz, T. A. Shibata, M. Stahl, M. Statera, E. Steffens, J. J.M. Steijger, J. Stewart, F. Stinzing, S. Taroian, A. Terkulov, R. Truty, A. Trzcinski, M. Tytgat, Y. Van Haarlem, C. Van Hulse, V. Vikhrov, I. Vilardi, S. Wang, S. Yaschenko, Z. Ye, S. Yen, V. Zagrebelnyy, B. Zihlmann, P. Zupranski

Physics

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

Abstract

The beam-helicity asymmetry in associated electroproduction of real photons, ep → eγπN, in the Δ(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 → eγπ⁰ p and ep → eγπ⁺ n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.

Original language	English (US)
Article number	077
Journal	Journal of High Energy Physics
Volume	2014
Issue number	1
DOIs	https://doi.org/10.1007/JHEP01(2014)077
State	Published - Jan 2014

Keywords

Lepton-Nucleon Scattering
Photon production
Polarization
QCD

ASJC Scopus subject areas

Nuclear and High Energy Physics

Online availability

10.1007/JHEP01(2014)077

Library availability

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Airapetian, A., Akopov, N., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetisyan, E., Blok, H. P., Böttcher, H., Borissov, A., Bowles, J., Brodski, I., Bryzgalov, V., Burns, J., Capitani, G. P., Cisbani, E., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., ... Zupranski, P. (2014). Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region. Journal of High Energy Physics, 2014(1), Article 077. https://doi.org/10.1007/JHEP01(2014)077

Airapetian, A, Akopov, N, Aschenauer, EC, Augustyniak, W, Avakian, R, Avetissian, A, Avetisyan, E, Blok, HP, Böttcher, H, Borissov, A, Bowles, J, Brodski, I, Bryzgalov, V, Burns, J, Capitani, GP, Cisbani, E, Ciullo, G, Contalbrigo, M, Dalpiaz, PF, Deconinck, W, De Leo, R, De Sanctis, E, Diefenthaler, M, Di Nezza, P, Düren, M, Ehrenfried, M, Elbakian, G, Ellinghaus, F, Etzelmüller, E, Fabbri, R, Frullani, S, Gapienko, G, Gapienko, V, García, JG, Garibaldi, F, Gavrilov, G, Gharibyan, V, Giordano, F, Gliske, S, Hartig, M, Hasch, D, Holler, Y, Hristova, I, Ivanilov, A, Jackson, HE, Joosten, S, Kaiser, R, Karyan, G, Keri, T, Kinney, E, Kisselev, A, Korotkov, V, Kozlov, V, Kravchenko, P, Krivokhijine, VG, Lagamba, L, Lapikás, L, Lehmann, I, Lenisa, P, Lorenzon, W, Lu, XG, Ma, BQ, Mahon, D, Makins, NCR, Manaenkov, SI, Mao, Y, Marianski, B, Marukyan, H, Miller, CA, Miyachi, Y, Movsisyan, A, Muccifora, V, Murray, M, Mussgiller, A, Naryshkin, Y, Nass, A, Negodaev, M, Nowak, WD, Pappalardo, LL, Perez-Benito, R, Petrosyan, A, Reimer, PE, Reolon, AR, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubin, J, Ryckbosch, D, Salomatin, Y, Schäfer, A, Schnell, G, Seitz, B, Shibata, TA, Stahl, M, Statera, M, Steffens, E, Steijger, JJM, Stewart, J, Stinzing, F, Taroian, S, Terkulov, A, Truty, R, Trzcinski, A, Tytgat, M, Van Haarlem, Y, Van Hulse, C, Vikhrov, V, Vilardi, I, Wang, S, Yaschenko, S, Ye, Z, Yen, S, Zagrebelnyy, V, Zihlmann, B & Zupranski, P 2014, 'Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region', Journal of High Energy Physics, vol. 2014, no. 1, 077. https://doi.org/10.1007/JHEP01(2014)077

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title = "Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region",

abstract = "The beam-helicity asymmetry in associated electroproduction of real photons, ep → eγπN, in the Δ(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 → eγπ0 p and ep → eγπ+ n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.",

keywords = "Lepton-Nucleon Scattering, Photon production, Polarization, QCD",

author = "A. Airapetian and N. Akopov and Aschenauer, {E. C.} and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetisyan and Blok, {H. P.} and H. B{\"o}ttcher and A. Borissov and J. Bowles and I. Brodski and V. Bryzgalov and J. Burns and Capitani, {G. P.} and E. Cisbani and G. Ciullo and M. Contalbrigo and Dalpiaz, {P. F.} and W. Deconinck and {De Leo}, R. and {De Sanctis}, E. and M. Diefenthaler and {Di Nezza}, P. and M. D{\"u}ren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and E. Etzelm{\"u}ller and R. Fabbri and S. Frullani and G. Gapienko and V. Gapienko and Garc{\'i}a, {J. Garay} and F. Garibaldi and G. Gavrilov and V. Gharibyan and F. Giordano and S. Gliske and M. Hartig and D. Hasch and Y. Holler and I. Hristova and A. Ivanilov and Jackson, {H. E.} and S. Joosten and R. Kaiser and G. Karyan and T. Keri and E. Kinney and A. Kisselev and V. Korotkov and V. Kozlov and P. Kravchenko and Krivokhijine, {V. G.} and L. Lagamba and L. Lapik{\'a}s and I. Lehmann and P. Lenisa and W. Lorenzon and Lu, {X. G.} and Ma, {B. Q.} and D. Mahon and Makins, {N. C.R.} and Manaenkov, {S. I.} and Y. Mao and B. Marianski and H. Marukyan and Miller, {C. A.} and Y. Miyachi and A. Movsisyan and V. Muccifora and M. Murray and A. Mussgiller and Y. Naryshkin and A. Nass and M. Negodaev and Nowak, {W. D.} and Pappalardo, {L. L.} and R. Perez-Benito and A. Petrosyan and Reimer, {P. E.} and Reolon, {A. R.} and C. Riedl and K. Rith and G. Rosner and A. Rostomyan and J. Rubin and D. Ryckbosch and Y. Salomatin and A. Sch{\"a}fer and G. Schnell and B. Seitz and Shibata, {T. A.} and M. Stahl and M. Statera and E. Steffens and Steijger, {J. J.M.} and J. Stewart and F. Stinzing and S. Taroian and A. Terkulov and R. Truty and A. Trzcinski and M. Tytgat and {Van Haarlem}, Y. and {Van Hulse}, C. and V. Vikhrov and I. Vilardi and S. Wang and S. Yaschenko and Z. Ye and S. Yen and V. Zagrebelnyy and B. Zihlmann and P. Zupranski",

year = "2014",

month = jan,

doi = "10.1007/JHEP01(2014)077",

language = "English (US)",

volume = "2014",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "1",

}

TY - JOUR

T1 - Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region

AU - Airapetian, A.

AU - Akopov, N.

AU - Aschenauer, E. C.

AU - Augustyniak, W.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetisyan, E.

AU - Blok, H. P.

AU - Böttcher, H.

AU - Borissov, A.

AU - Bowles, J.

AU - Brodski, I.

AU - Bryzgalov, V.

AU - Burns, J.

AU - Capitani, G. P.

AU - Cisbani, E.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P. F.

AU - Deconinck, W.

AU - De Leo, R.

AU - De Sanctis, E.

AU - Diefenthaler, M.

AU - Di Nezza, P.

AU - Düren, M.

AU - Ehrenfried, M.

AU - Elbakian, G.

AU - Ellinghaus, F.

AU - Etzelmüller, E.

AU - Fabbri, R.

AU - Frullani, S.

AU - Gapienko, G.

AU - Gapienko, V.

AU - García, J. Garay

AU - Garibaldi, F.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Giordano, F.

AU - Gliske, S.

AU - Hartig, M.

AU - Hasch, D.

AU - Holler, Y.

AU - Hristova, I.

AU - Ivanilov, A.

AU - Jackson, H. E.

AU - Joosten, S.

AU - Kaiser, R.

AU - Karyan, G.

AU - Keri, T.

AU - Kinney, E.

AU - Kisselev, A.

AU - Korotkov, V.

AU - Kozlov, V.

AU - Kravchenko, P.

AU - Krivokhijine, V. G.

AU - Lagamba, L.

AU - Lapikás, L.

AU - Lehmann, I.

AU - Lenisa, P.

AU - Lorenzon, W.

AU - Lu, X. G.

AU - Ma, B. Q.

AU - Mahon, D.

AU - Makins, N. C.R.

AU - Manaenkov, S. I.

AU - Mao, Y.

AU - Marianski, B.

AU - Marukyan, H.

AU - Miller, C. A.

AU - Miyachi, Y.

AU - Movsisyan, A.

AU - Muccifora, V.

AU - Murray, M.

AU - Mussgiller, A.

AU - Naryshkin, Y.

AU - Nass, A.

AU - Negodaev, M.

AU - Nowak, W. D.

AU - Pappalardo, L. L.

AU - Perez-Benito, R.

AU - Petrosyan, A.

AU - Reimer, P. E.

AU - Reolon, A. R.

AU - Riedl, C.

AU - Rith, K.

AU - Rosner, G.

AU - Rostomyan, A.

AU - Rubin, J.

AU - Ryckbosch, D.

AU - Salomatin, Y.

AU - Schäfer, A.

AU - Schnell, G.

AU - Seitz, B.

AU - Shibata, T. A.

AU - Stahl, M.

AU - Statera, M.

AU - Steffens, E.

AU - Steijger, J. J.M.

AU - Stewart, J.

AU - Stinzing, F.

AU - Taroian, S.

AU - Terkulov, A.

AU - Truty, R.

AU - Trzcinski, A.

AU - Tytgat, M.

AU - Van Haarlem, Y.

AU - Van Hulse, C.

AU - Vikhrov, V.

AU - Vilardi, I.

AU - Wang, S.

AU - Yaschenko, S.

AU - Ye, Z.

AU - Yen, S.

AU - Zagrebelnyy, V.

AU - Zihlmann, B.

AU - Zupranski, P.

PY - 2014/1

Y1 - 2014/1

N2 - The beam-helicity asymmetry in associated electroproduction of real photons, ep → eγπN, in the Δ(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 → eγπ0 p and ep → eγπ+ n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.

AB - The beam-helicity asymmetry in associated electroproduction of real photons, ep → eγπN, in the Δ(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 → eγπ0 p and ep → eγπ+ n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.

KW - Lepton-Nucleon Scattering

KW - Photon production

KW - Polarization

KW - QCD

UR - http://www.scopus.com/inward/record.url?scp=84893963157&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893963157&partnerID=8YFLogxK

U2 - 10.1007/JHEP01(2014)077

DO - 10.1007/JHEP01(2014)077

M3 - Article

AN - SCOPUS:84893963157

SN - 1126-6708

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 1

M1 - 077

ER -

Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region

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