Physics Letters B (Oct 2017)
Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV
- 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
Affiliations
- P. Collins
- Arizona State University, Tempe, AZ 85287-1504, USA; Catholic University of America, Washington, DC 20064, USA
- B.G. Ritchie
- Arizona State University, Tempe, AZ 85287-1504, USA; Corresponding author.
- M. Dugger
- Arizona State University, Tempe, AZ 85287-1504, USA
- F.J. Klein
- Catholic University of America, Washington, DC 20064, USA; The George Washington University, Washington, DC 20052, USA
- A.V. Anisovich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- E. Klempt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- V.A. Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany; NRC “Kurchatov” Institute, PNPI, Gatchina 188300, Russia
- A. Sarantsev
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany; NRC “Kurchatov” Institute, PNPI, Gatchina 188300, Russia
- K.P. Adhikari
- Mississippi State University, MS 39762-5167, USA
- S. Adhikari
- Florida International University, Miami, FL 33199, USA
- D. Adikaram
- Old Dominion University, Norfolk, VA 23529, USA
- Z. Akbar
- Florida State University, Tallahassee, FL 32306, USA
- S. Anefalos Pereira
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- H. Avakian
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- J. Ball
- Irfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- N.A. Baltzell
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; University of South Carolina, Columbia, SC 29208, USA
- M. Bashkanov
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- M. Battaglieri
- INFN, Sezione di Genova, 16146 Genova, Italy
- V. Batourine
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Kyungpook National University, Daegu 41566, Republic of Korea
- I. Bedlinskiy
- Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia
- A.S. Biselli
- Fairfield University, Fairfield CT 06824, USA; Carnegie Mellon University, Pittsburgh, PA 15213, USA
- S. Boiarinov
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- W.J. Briscoe
- The George Washington University, Washington, DC 20052, USA
- W.K. Brooks
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- V.D. Burkert
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- Frank Thanh Cao
- University of Connecticut, Storrs, CT 06269, USA
- T. Cao
- University of South Carolina, Columbia, SC 29208, USA
- D.S. Carman
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- A. Celentano
- INFN, Sezione di Genova, 16146 Genova, Italy
- G. Charles
- Old Dominion University, Norfolk, VA 23529, USA
- T. Chetry
- Ohio University, Athens, OH 45701, USA
- G. Ciullo
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy; Universita' di Ferrara, 44121 Ferrara, Italy
- L. Clark
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- P.L. Cole
- Idaho State University, Pocatello, ID 83209, USA
- M. Contalbrigo
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
- O. Cortes
- Idaho State University, Pocatello, ID 83209, USA
- V. Crede
- Florida State University, Tallahassee, FL 32306, USA
- N. Dashyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
- R. De Vita
- INFN, Sezione di Genova, 16146 Genova, Italy
- E. De Sanctis
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- M. Defurne
- Irfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- A. Deur
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- C. Djalali
- University of South Carolina, Columbia, SC 29208, USA
- R. Dupre
- Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France
- H. Egiyan
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; University of New Hampshire, Durham, NH 03824-3568, USA
- A. El Alaoui
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- L. El Fassi
- Mississippi State University, MS 39762-5167, USA
- P. Eugenio
- Florida State University, Tallahassee, FL 32306, USA
- G. Fedotov
- University of South Carolina, Columbia, SC 29208, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- A. Filippi
- INFN, Sezione di Torino, 10125 Torino, Italy
- J.A. Fleming
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- Y. Ghandilyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
- G.P. Gilfoyle
- University of Richmond, Richmond, VA 23173, USA
- K.L. Giovanetti
- James Madison University, Harrisonburg, VA 22807, USA
- F.X. Girod
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- D.I. Glazier
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- C. Gleason
- University of South Carolina, Columbia, SC 29208, USA
- E. Golovatch
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- R.W. Gothe
- University of South Carolina, Columbia, SC 29208, USA
- K.A. Griffioen
- College of William and Mary, Williamsburg, VA 23187-8795, USA
- M. Guidal
- Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France
- K. Hafidi
- Argonne National Laboratory, Argonne, IL 60439, USA
- H. Hakobyan
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile; Yerevan Physics Institute, 375036 Yerevan, Armenia
- C. Hanretty
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- N. Harrison
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- M. Hattawy
- Argonne National Laboratory, Argonne, IL 60439, USA
- D. Heddle
- Christopher Newport University, Newport News, VA 23606, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- K. Hicks
- Ohio University, Athens, OH 45701, USA
- G. Hollis
- University of South Carolina, Columbia, SC 29208, USA
- M. Holtrop
- University of New Hampshire, Durham, NH 03824-3568, USA
- S.M. Hughes
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- Y. Ilieva
- University of South Carolina, Columbia, SC 29208, USA; The George Washington University, Washington, DC 20052, USA
- D.G. Ireland
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- B.S. Ishkhanov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- E.L. Isupov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- D. Jenkins
- Virginia Tech, Blacksburg, VA 24061-0435, USA
- H. Jiang
- University of South Carolina, Columbia, SC 29208, USA
- H.S. Jo
- Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France
- S. Joosten
- Temple University, Philadelphia, PA 19122, USA
- D. Keller
- University of Virginia, Charlottesville, VA 22901, USA
- G. Khachatryan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
- M. Khachatryan
- Old Dominion University, Norfolk, VA 23529, USA
- M. Khandaker
- Norfolk State University, Norfolk, VA 23504, USA
- A. Kim
- University of Connecticut, Storrs, CT 06269, USA
- W. Kim
- Kyungpook National University, Daegu 41566, Republic of Korea
- A. Klein
- Old Dominion University, Norfolk, VA 23529, USA
- V. Kubarovsky
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
- S.V. Kuleshov
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile; Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia
- L. Lanza
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- P. Lenisa
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
- K. Livingston
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- I.J.D. MacGregor
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- N. Markov
- University of Connecticut, Storrs, CT 06269, USA
- B. McKinnon
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- C.A. Meyer
- Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Z.E. Meziani
- Temple University, Philadelphia, PA 19122, USA
- T. Mineeva
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- V. Mokeev
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- R.A. Montgomery
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- A. Movsisyan
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
- E. Munevar
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- C. Munoz Camacho
- Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France
- P. Nadel-Turonski
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; The George Washington University, Washington, DC 20052, USA
- L.A. Net
- University of South Carolina, Columbia, SC 29208, USA
- S. Niccolai
- Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France
- G. Niculescu
- James Madison University, Harrisonburg, VA 22807, USA
- I. Niculescu
- James Madison University, Harrisonburg, VA 22807, USA
- M. Osipenko
- INFN, Sezione di Genova, 16146 Genova, Italy
- A.I. Ostrovidov
- Florida State University, Tallahassee, FL 32306, USA
- M. Paolone
- Temple University, Philadelphia, PA 19122, USA
- R. Paremuzyan
- University of New Hampshire, Durham, NH 03824-3568, USA
- K. Park
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Kyungpook National University, Daegu 41566, Republic of Korea
- E. Pasyuk
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Arizona State University, Tempe, AZ 85287-1504, USA
- W. Phelps
- Florida International University, Miami, FL 33199, USA
- S. Pisano
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- O. Pogorelko
- Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia
- J.W. Price
- California State University, Dominguez Hills, Carson, CA 90747, USA
- S. Procureur
- Irfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Y. Prok
- Old Dominion University, Norfolk, VA 23529, USA; University of Virginia, Charlottesville, VA 22901, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- D. Protopopescu
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- B.A. Raue
- Florida International University, Miami, FL 33199, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- M. Ripani
- INFN, Sezione di Genova, 16146 Genova, Italy
- A. Rizzo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy; Universita' di Roma Tor Vergata, 00133 Rome Italy
- G. Rosner
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- F. Sabatié
- Irfu/SPhN, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- C. Salgado
- Norfolk State University, Norfolk, VA 23504, USA
- R.A. Schumacher
- Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Y.G. Sharabian
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- A. Simonyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
- Iu. Skorodumina
- University of South Carolina, Columbia, SC 29208, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- G.D. Smith
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- D.I. Sober
- Catholic University of America, Washington, DC 20064, USA
- D. Sokhan
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
- N. Sparveris
- Temple University, Philadelphia, PA 19122, USA
- I. Stankovic
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- S. Stepanyan
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- I.I. Strakovsky
- The George Washington University, Washington, DC 20052, USA
- S. Strauch
- University of South Carolina, Columbia, SC 29208, USA; The George Washington University, Washington, DC 20052, USA
- M. Taiuti
- Università di Genova, 16146 Genova, Italy
- M. Ungaro
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; University of Connecticut, Storrs, CT 06269, USA
- H. Voskanyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
- E. Voutier
- Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France
- N.K. Walford
- Catholic University of America, Washington, DC 20064, USA
- D.P. Watts
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- X. Wei
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
- M.H. Wood
- Canisius College, Buffalo, NY, USA; University of South Carolina, Columbia, SC 29208, USA
- N. Zachariou
- Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
- J. Zhang
- Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Old Dominion University, Norfolk, VA 23529, USA
- Z.W. Zhao
- Old Dominion University, Norfolk, VA 23529, USA; Duke University, Durham, NC 27708-0305, USA
- Journal volume & issue
-
Vol. 773
pp. 112 – 120
Abstract
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
