Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV

Photon beam asymmetry Σ measurements for ω photoproduction in the reaction γ→p→ωp are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measuremen...

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Main Authors: P. Collins, B.G. Ritchie, M. Dugger, F.J. Klein, A.V. Anisovich, E. Klempt, V.A. Nikonov, A. Sarantsev, K.P. Adhikari, S. Adhikari, D. Adikaram, Z. Akbar, S. Anefalos Pereira, H. Avakian, J. Ball, N.A. Baltzell, M. Bashkanov, M. Battaglieri, V. Batourine, I. Bedlinskiy, A.S. Biselli, S. Boiarinov, W.J. Briscoe, W.K. Brooks, V.D. Burkert, Frank Thanh Cao, T. Cao, D.S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, L. Clark, P.L. Cole, M. Contalbrigo, O. Cortes, V. Crede, N. Dashyan, R. De Vita, E. De Sanctis, M. Defurne, A. Deur, C. Djalali, R. Dupre, H. Egiyan, A. El Alaoui, L. El Fassi, P. Eugenio, G. Fedotov, A. Filippi, J.A. Fleming, Y. Ghandilyan, G.P. Gilfoyle, K.L. Giovanetti, F.X. Girod, D.I. Glazier, C. Gleason, E. Golovatch, R.W. Gothe, K.A. Griffioen, M. Guidal, K. Hafidi, H. Hakobyan, C. Hanretty, N. Harrison, M. Hattawy, D. Heddle, K. Hicks, G. Hollis, M. Holtrop, S.M. Hughes, Y. Ilieva, D.G. Ireland, B.S. Ishkhanov, E.L. Isupov, D. Jenkins, H. Jiang, H.S. Jo, S. Joosten, D. Keller, G. Khachatryan, M. Khachatryan, M. Khandaker, A. Kim, W. Kim, A. Klein, V. Kubarovsky, S.V. Kuleshov, L. Lanza, P. Lenisa, K. Livingston, I.J.D. MacGregor, N. Markov, B. McKinnon, C.A. Meyer, Z.E. Meziani, T. Mineeva, V. Mokeev, R.A. Montgomery, A. Movsisyan, E. Munevar, C. Munoz Camacho, P. Nadel-Turonski, L.A. Net, S. Niccolai, G. Niculescu, I. Niculescu, M. Osipenko, A.I. Ostrovidov, M. Paolone, R. Paremuzyan, K. Park, E. Pasyuk, W. Phelps, S. Pisano, O. Pogorelko, J.W. Price, S. Procureur, Y. Prok, D. Protopopescu, B.A. Raue, M. Ripani, A. Rizzo, G. Rosner, F. Sabatié, C. Salgado, R.A. Schumacher, Y.G. Sharabian, A. Simonyan, Iu. Skorodumina, G.D. Smith, D.I. Sober, D. Sokhan, N. Sparveris, I. Stankovic, S. Stepanyan, I.I. Strakovsky, S. Strauch, M. Taiuti, M. Ungaro, H. Voskanyan, E. Voutier, N.K. Walford, D.P. Watts, X. Wei, M.H. Wood, N. Zachariou, J. Zhang, Z.W. Zhao
Format: Article
Language:English
Published: Elsevier 2017-10-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269317306366
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author P. Collins
B.G. Ritchie
M. Dugger
F.J. Klein
A.V. Anisovich
E. Klempt
V.A. Nikonov
A. Sarantsev
K.P. Adhikari
S. Adhikari
D. Adikaram
Z. Akbar
S. Anefalos Pereira
H. Avakian
J. Ball
N.A. Baltzell
M. Bashkanov
M. Battaglieri
V. Batourine
I. Bedlinskiy
A.S. Biselli
S. Boiarinov
W.J. Briscoe
W.K. Brooks
V.D. Burkert
Frank Thanh Cao
T. Cao
D.S. Carman
A. Celentano
G. Charles
T. Chetry
G. Ciullo
L. Clark
P.L. Cole
M. Contalbrigo
O. Cortes
V. Crede
N. Dashyan
R. De Vita
E. De Sanctis
M. Defurne
A. Deur
C. Djalali
R. Dupre
H. Egiyan
A. El Alaoui
L. El Fassi
P. Eugenio
G. Fedotov
A. Filippi
J.A. Fleming
Y. Ghandilyan
G.P. Gilfoyle
K.L. Giovanetti
F.X. Girod
D.I. Glazier
C. Gleason
E. Golovatch
R.W. Gothe
K.A. Griffioen
M. Guidal
K. Hafidi
H. Hakobyan
C. Hanretty
N. Harrison
M. Hattawy
D. Heddle
K. Hicks
G. Hollis
M. Holtrop
S.M. Hughes
Y. Ilieva
D.G. Ireland
B.S. Ishkhanov
E.L. Isupov
D. Jenkins
H. Jiang
H.S. Jo
S. Joosten
D. Keller
G. Khachatryan
M. Khachatryan
M. Khandaker
A. Kim
W. Kim
A. Klein
V. Kubarovsky
S.V. Kuleshov
L. Lanza
P. Lenisa
K. Livingston
I.J.D. MacGregor
N. Markov
B. McKinnon
C.A. Meyer
Z.E. Meziani
T. Mineeva
V. Mokeev
R.A. Montgomery
A. Movsisyan
E. Munevar
C. Munoz Camacho
P. Nadel-Turonski
L.A. Net
S. Niccolai
G. Niculescu
I. Niculescu
M. Osipenko
A.I. Ostrovidov
M. Paolone
R. Paremuzyan
K. Park
E. Pasyuk
W. Phelps
S. Pisano
O. Pogorelko
J.W. Price
S. Procureur
Y. Prok
D. Protopopescu
B.A. Raue
M. Ripani
A. Rizzo
G. Rosner
F. Sabatié
C. Salgado
R.A. Schumacher
Y.G. Sharabian
A. Simonyan
Iu. Skorodumina
G.D. Smith
D.I. Sober
D. Sokhan
N. Sparveris
I. Stankovic
S. Stepanyan
I.I. Strakovsky
S. Strauch
M. Taiuti
M. Ungaro
H. Voskanyan
E. Voutier
N.K. Walford
D.P. Watts
X. Wei
M.H. Wood
N. Zachariou
J. Zhang
Z.W. Zhao
author_facet P. Collins
B.G. Ritchie
M. Dugger
F.J. Klein
A.V. Anisovich
E. Klempt
V.A. Nikonov
A. Sarantsev
K.P. Adhikari
S. Adhikari
D. Adikaram
Z. Akbar
S. Anefalos Pereira
H. Avakian
J. Ball
N.A. Baltzell
M. Bashkanov
M. Battaglieri
V. Batourine
I. Bedlinskiy
A.S. Biselli
S. Boiarinov
W.J. Briscoe
W.K. Brooks
V.D. Burkert
Frank Thanh Cao
T. Cao
D.S. Carman
A. Celentano
G. Charles
T. Chetry
G. Ciullo
L. Clark
P.L. Cole
M. Contalbrigo
O. Cortes
V. Crede
N. Dashyan
R. De Vita
E. De Sanctis
M. Defurne
A. Deur
C. Djalali
R. Dupre
H. Egiyan
A. El Alaoui
L. El Fassi
P. Eugenio
G. Fedotov
A. Filippi
J.A. Fleming
Y. Ghandilyan
G.P. Gilfoyle
K.L. Giovanetti
F.X. Girod
D.I. Glazier
C. Gleason
E. Golovatch
R.W. Gothe
K.A. Griffioen
M. Guidal
K. Hafidi
H. Hakobyan
C. Hanretty
N. Harrison
M. Hattawy
D. Heddle
K. Hicks
G. Hollis
M. Holtrop
S.M. Hughes
Y. Ilieva
D.G. Ireland
B.S. Ishkhanov
E.L. Isupov
D. Jenkins
H. Jiang
H.S. Jo
S. Joosten
D. Keller
G. Khachatryan
M. Khachatryan
M. Khandaker
A. Kim
W. Kim
A. Klein
V. Kubarovsky
S.V. Kuleshov
L. Lanza
P. Lenisa
K. Livingston
I.J.D. MacGregor
N. Markov
B. McKinnon
C.A. Meyer
Z.E. Meziani
T. Mineeva
V. Mokeev
R.A. Montgomery
A. Movsisyan
E. Munevar
C. Munoz Camacho
P. Nadel-Turonski
L.A. Net
S. Niccolai
G. Niculescu
I. Niculescu
M. Osipenko
A.I. Ostrovidov
M. Paolone
R. Paremuzyan
K. Park
E. Pasyuk
W. Phelps
S. Pisano
O. Pogorelko
J.W. Price
S. Procureur
Y. Prok
D. Protopopescu
B.A. Raue
M. Ripani
A. Rizzo
G. Rosner
F. Sabatié
C. Salgado
R.A. Schumacher
Y.G. Sharabian
A. Simonyan
Iu. Skorodumina
G.D. Smith
D.I. Sober
D. Sokhan
N. Sparveris
I. Stankovic
S. Stepanyan
I.I. Strakovsky
S. Strauch
M. Taiuti
M. Ungaro
H. Voskanyan
E. Voutier
N.K. Walford
D.P. Watts
X. Wei
M.H. Wood
N. Zachariou
J. Zhang
Z.W. Zhao
author_sort P. Collins
collection DOAJ
description Photon beam asymmetry Σ measurements for ω photoproduction in the reaction γ→p→ωp are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher energies, and resolve discrepancies in previously published data. Comparisons of these new results with predictions from a chiral-quark-based model and from a dynamical coupled-channels model indicate the importance of interferences between t-channel meson exchange and s- and u-channel contributions, underscoring sensitivity to the nucleon resonances included in those descriptions. Comparisons with the Bonn–Gatchina partial-wave analysis indicate the Σ data reported here help to fix the magnitudes of the interference terms between the leading amplitudes in that calculation (Pomeron exchange and the resonant portion of the JP=3/2+ partial wave), as well as the resonant portions of the smaller partial waves with JP=1/2−, 3/2−, and 5/2+. Keywords: Omega photoproduction, Polarization observable, Beam asymmetry
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spelling doaj.art-e8a55d76d3294448b1cac4e44b4efd002022-12-22T00:09:30ZengElsevierPhysics Letters B0370-26932017-10-01773112120Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeVP. Collins0B.G. Ritchie1M. Dugger2F.J. Klein3A.V. Anisovich4E. Klempt5V.A. Nikonov6A. Sarantsev7K.P. Adhikari8S. Adhikari9D. Adikaram10Z. Akbar11S. Anefalos Pereira12H. Avakian13J. Ball14N.A. Baltzell15M. Bashkanov16M. Battaglieri17V. Batourine18I. Bedlinskiy19A.S. Biselli20S. Boiarinov21W.J. Briscoe22W.K. Brooks23V.D. Burkert24Frank Thanh Cao25T. Cao26D.S. Carman27A. Celentano28G. Charles29T. Chetry30G. Ciullo31L. Clark32P.L. Cole33M. Contalbrigo34O. Cortes35V. Crede36N. Dashyan37R. De Vita38E. De Sanctis39M. Defurne40A. Deur41C. Djalali42R. Dupre43H. Egiyan44A. El Alaoui45L. El Fassi46P. Eugenio47G. Fedotov48A. Filippi49J.A. Fleming50Y. Ghandilyan51G.P. Gilfoyle52K.L. Giovanetti53F.X. Girod54D.I. Glazier55C. Gleason56E. Golovatch57R.W. Gothe58K.A. Griffioen59M. Guidal60K. Hafidi61H. Hakobyan62C. Hanretty63N. Harrison64M. Hattawy65D. Heddle66K. Hicks67G. Hollis68M. Holtrop69S.M. Hughes70Y. Ilieva71D.G. Ireland72B.S. Ishkhanov73E.L. Isupov74D. Jenkins75H. Jiang76H.S. Jo77S. Joosten78D. Keller79G. Khachatryan80M. Khachatryan81M. Khandaker82A. Kim83W. Kim84A. Klein85V. Kubarovsky86S.V. Kuleshov87L. Lanza88P. Lenisa89K. Livingston90I.J.D. MacGregor91N. Markov92B. McKinnon93C.A. Meyer94Z.E. Meziani95T. Mineeva96V. Mokeev97R.A. Montgomery98A. Movsisyan99E. Munevar100C. Munoz Camacho101P. Nadel-Turonski102L.A. Net103S. Niccolai104G. Niculescu105I. Niculescu106M. Osipenko107A.I. Ostrovidov108M. Paolone109R. Paremuzyan110K. Park111E. Pasyuk112W. Phelps113S. Pisano114O. Pogorelko115J.W. Price116S. Procureur117Y. Prok118D. Protopopescu119B.A. Raue120M. Ripani121A. Rizzo122G. Rosner123F. Sabatié124C. Salgado125R.A. Schumacher126Y.G. Sharabian127A. Simonyan128Iu. Skorodumina129G.D. Smith130D.I. Sober131D. Sokhan132N. Sparveris133I. Stankovic134S. Stepanyan135I.I. Strakovsky136S. Strauch137M. Taiuti138M. Ungaro139H. Voskanyan140E. Voutier141N.K. Walford142D.P. Watts143X. Wei144M.H. Wood145N. Zachariou146J. Zhang147Z.W. Zhao148Arizona State University, Tempe, AZ 85287-1504, USA; Catholic University of America, Washington, DC 20064, USAArizona State University, Tempe, AZ 85287-1504, USA; Corresponding author.Arizona State University, Tempe, AZ 85287-1504, USACatholic University of America, Washington, DC 20064, USA; The George Washington University, Washington, DC 20052, USAHelmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, GermanyHelmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAHelmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany; NRC “Kurchatov” Institute, PNPI, Gatchina 188300, RussiaHelmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany; NRC “Kurchatov” Institute, PNPI, Gatchina 188300, RussiaMississippi State University, MS 39762-5167, USAFlorida International University, Miami, FL 33199, USAOld Dominion University, Norfolk, VA 23529, USAFlorida State University, Tallahassee, FL 32306, USAINFN, Laboratori Nazionali di Frascati, 00044 Frascati, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAIrfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; University of South Carolina, Columbia, SC 29208, USAEdinburgh University, Edinburgh EH9 3JZ, United KingdomINFN, Sezione di Genova, 16146 Genova, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Kyungpook National University, Daegu 41566, Republic of KoreaInstitute of Theoretical and Experimental Physics, Moscow, 117259, RussiaFairfield University, Fairfield CT 06824, USA; Carnegie Mellon University, Pittsburgh, PA 15213, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAThe George Washington University, Washington, DC 20052, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, ChileThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of Connecticut, Storrs, CT 06269, USAUniversity of South Carolina, Columbia, SC 29208, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAINFN, Sezione di Genova, 16146 Genova, ItalyOld Dominion University, Norfolk, VA 23529, USAOhio University, Athens, OH 45701, USAINFN, Sezione di Ferrara, 44100 Ferrara, Italy; Universita' di Ferrara, 44121 Ferrara, ItalyUniversity of Glasgow, Glasgow G12 8QQ, United KingdomIdaho State University, Pocatello, ID 83209, USAINFN, Sezione di Ferrara, 44100 Ferrara, ItalyIdaho State University, Pocatello, ID 83209, USAFlorida State University, Tallahassee, FL 32306, USAYerevan Physics Institute, 375036 Yerevan, ArmeniaINFN, Sezione di Genova, 16146 Genova, ItalyINFN, Laboratori Nazionali di Frascati, 00044 Frascati, ItalyIrfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of South Carolina, Columbia, SC 29208, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; University of New Hampshire, Durham, NH 03824-3568, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, ChileMississippi State University, MS 39762-5167, USAFlorida State University, Tallahassee, FL 32306, USAUniversity of South Carolina, Columbia, SC 29208, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaINFN, Sezione di Torino, 10125 Torino, ItalyEdinburgh University, Edinburgh EH9 3JZ, United KingdomYerevan Physics Institute, 375036 Yerevan, ArmeniaUniversity of Richmond, Richmond, VA 23173, USAJames Madison University, Harrisonburg, VA 22807, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomUniversity of South Carolina, Columbia, SC 29208, USASkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaUniversity of South Carolina, Columbia, SC 29208, USACollege of William and Mary, Williamsburg, VA 23187-8795, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceArgonne National Laboratory, Argonne, IL 60439, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile; Yerevan Physics Institute, 375036 Yerevan, ArmeniaThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAArgonne National Laboratory, Argonne, IL 60439, USAChristopher Newport University, Newport News, VA 23606, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAOhio University, Athens, OH 45701, USAUniversity of South Carolina, Columbia, SC 29208, USAUniversity of New Hampshire, Durham, NH 03824-3568, USAEdinburgh University, Edinburgh EH9 3JZ, United KingdomUniversity of South Carolina, Columbia, SC 29208, USA; The George Washington University, Washington, DC 20052, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomSkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaSkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaVirginia Tech, Blacksburg, VA 24061-0435, USAUniversity of South Carolina, Columbia, SC 29208, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceTemple University, Philadelphia, PA 19122, USAUniversity of Virginia, Charlottesville, VA 22901, USAYerevan Physics Institute, 375036 Yerevan, ArmeniaOld Dominion University, Norfolk, VA 23529, USANorfolk State University, Norfolk, VA 23504, USAUniversity of Connecticut, Storrs, CT 06269, USAKyungpook National University, Daegu 41566, Republic of KoreaOld Dominion University, Norfolk, VA 23529, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile; Institute of Theoretical and Experimental Physics, Moscow, 117259, RussiaINFN, Sezione di Roma Tor Vergata, 00133 Rome, ItalyINFN, Sezione di Ferrara, 44100 Ferrara, ItalyUniversity of Glasgow, Glasgow G12 8QQ, United KingdomUniversity of Glasgow, Glasgow G12 8QQ, United KingdomUniversity of Connecticut, Storrs, CT 06269, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomCarnegie Mellon University, Pittsburgh, PA 15213, USATemple University, Philadelphia, PA 19122, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, ChileThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaUniversity of Glasgow, Glasgow G12 8QQ, United KingdomINFN, Sezione di Ferrara, 44100 Ferrara, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; The George Washington University, Washington, DC 20052, USAUniversity of South Carolina, Columbia, SC 29208, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceJames Madison University, Harrisonburg, VA 22807, USAJames Madison University, Harrisonburg, VA 22807, USAINFN, Sezione di Genova, 16146 Genova, ItalyFlorida State University, Tallahassee, FL 32306, USATemple University, Philadelphia, PA 19122, USAUniversity of New Hampshire, Durham, NH 03824-3568, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Kyungpook National University, Daegu 41566, Republic of KoreaThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Arizona State University, Tempe, AZ 85287-1504, USAFlorida International University, Miami, FL 33199, USAINFN, Laboratori Nazionali di Frascati, 00044 Frascati, ItalyInstitute of Theoretical and Experimental Physics, Moscow, 117259, RussiaCalifornia State University, Dominguez Hills, Carson, CA 90747, USAIrfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, FranceOld Dominion University, Norfolk, VA 23529, USA; University of Virginia, Charlottesville, VA 22901, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomFlorida International University, Miami, FL 33199, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAINFN, Sezione di Genova, 16146 Genova, ItalyINFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy; Universita' di Roma Tor Vergata, 00133 Rome ItalyUniversity of Glasgow, Glasgow G12 8QQ, United KingdomIrfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, FranceNorfolk State University, Norfolk, VA 23504, USACarnegie Mellon University, Pittsburgh, PA 15213, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAYerevan Physics Institute, 375036 Yerevan, ArmeniaUniversity of South Carolina, Columbia, SC 29208, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaEdinburgh University, Edinburgh EH9 3JZ, United KingdomCatholic University of America, Washington, DC 20064, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomTemple University, Philadelphia, PA 19122, USAEdinburgh University, Edinburgh EH9 3JZ, United KingdomThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAThe George Washington University, Washington, DC 20052, USAUniversity of South Carolina, Columbia, SC 29208, USA; The George Washington University, Washington, DC 20052, USAUniversità di Genova, 16146 Genova, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; University of Connecticut, Storrs, CT 06269, USAYerevan Physics Institute, 375036 Yerevan, ArmeniaInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceCatholic University of America, Washington, DC 20064, USAEdinburgh University, Edinburgh EH9 3JZ, United KingdomThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USACanisius College, Buffalo, NY, USA; University of South Carolina, Columbia, SC 29208, USAEdinburgh University, Edinburgh EH9 3JZ, United KingdomThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Old Dominion University, Norfolk, VA 23529, USAOld Dominion University, Norfolk, VA 23529, USA; Duke University, Durham, NC 27708-0305, USAPhoton beam asymmetry Σ measurements for ω photoproduction in the reaction γ→p→ωp are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher energies, and resolve discrepancies in previously published data. Comparisons of these new results with predictions from a chiral-quark-based model and from a dynamical coupled-channels model indicate the importance of interferences between t-channel meson exchange and s- and u-channel contributions, underscoring sensitivity to the nucleon resonances included in those descriptions. Comparisons with the Bonn–Gatchina partial-wave analysis indicate the Σ data reported here help to fix the magnitudes of the interference terms between the leading amplitudes in that calculation (Pomeron exchange and the resonant portion of the JP=3/2+ partial wave), as well as the resonant portions of the smaller partial waves with JP=1/2−, 3/2−, and 5/2+. Keywords: Omega photoproduction, Polarization observable, Beam asymmetryhttp://www.sciencedirect.com/science/article/pii/S0370269317306366
spellingShingle P. Collins
B.G. Ritchie
M. Dugger
F.J. Klein
A.V. Anisovich
E. Klempt
V.A. Nikonov
A. Sarantsev
K.P. Adhikari
S. Adhikari
D. Adikaram
Z. Akbar
S. Anefalos Pereira
H. Avakian
J. Ball
N.A. Baltzell
M. Bashkanov
M. Battaglieri
V. Batourine
I. Bedlinskiy
A.S. Biselli
S. Boiarinov
W.J. Briscoe
W.K. Brooks
V.D. Burkert
Frank Thanh Cao
T. Cao
D.S. Carman
A. Celentano
G. Charles
T. Chetry
G. Ciullo
L. Clark
P.L. Cole
M. Contalbrigo
O. Cortes
V. Crede
N. Dashyan
R. De Vita
E. De Sanctis
M. Defurne
A. Deur
C. Djalali
R. Dupre
H. Egiyan
A. El Alaoui
L. El Fassi
P. Eugenio
G. Fedotov
A. Filippi
J.A. Fleming
Y. Ghandilyan
G.P. Gilfoyle
K.L. Giovanetti
F.X. Girod
D.I. Glazier
C. Gleason
E. Golovatch
R.W. Gothe
K.A. Griffioen
M. Guidal
K. Hafidi
H. Hakobyan
C. Hanretty
N. Harrison
M. Hattawy
D. Heddle
K. Hicks
G. Hollis
M. Holtrop
S.M. Hughes
Y. Ilieva
D.G. Ireland
B.S. Ishkhanov
E.L. Isupov
D. Jenkins
H. Jiang
H.S. Jo
S. Joosten
D. Keller
G. Khachatryan
M. Khachatryan
M. Khandaker
A. Kim
W. Kim
A. Klein
V. Kubarovsky
S.V. Kuleshov
L. Lanza
P. Lenisa
K. Livingston
I.J.D. MacGregor
N. Markov
B. McKinnon
C.A. Meyer
Z.E. Meziani
T. Mineeva
V. Mokeev
R.A. Montgomery
A. Movsisyan
E. Munevar
C. Munoz Camacho
P. Nadel-Turonski
L.A. Net
S. Niccolai
G. Niculescu
I. Niculescu
M. Osipenko
A.I. Ostrovidov
M. Paolone
R. Paremuzyan
K. Park
E. Pasyuk
W. Phelps
S. Pisano
O. Pogorelko
J.W. Price
S. Procureur
Y. Prok
D. Protopopescu
B.A. Raue
M. Ripani
A. Rizzo
G. Rosner
F. Sabatié
C. Salgado
R.A. Schumacher
Y.G. Sharabian
A. Simonyan
Iu. Skorodumina
G.D. Smith
D.I. Sober
D. Sokhan
N. Sparveris
I. Stankovic
S. Stepanyan
I.I. Strakovsky
S. Strauch
M. Taiuti
M. Ungaro
H. Voskanyan
E. Voutier
N.K. Walford
D.P. Watts
X. Wei
M.H. Wood
N. Zachariou
J. Zhang
Z.W. Zhao
Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
Physics Letters B
title Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
title_full Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
title_fullStr Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
title_full_unstemmed Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
title_short Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
title_sort photon beam asymmetry σ in the reaction γ p pω for eγ 1 152 to 1 876 gev
url http://www.sciencedirect.com/science/article/pii/S0370269317306366
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