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Measurements of double-polarized compton scattering asymmetries and extraction of the proton spin polarizabilities.
Martel, P P; Miskimen, R; Aguar-Bartolome, P; Ahrens, J; Akondi, C S; Annand, J R M; Arends, H J; Barnes, W; Beck, R; Bernstein, A; Borisov, N; Braghieri, A; Briscoe, W J; Cherepnya, S; Collicott, C; Costanza, S; Denig, A; Dieterle, M; Downie, E J; Fil'kov, L V; Garni, S; Glazier, D I; Gradl, W; Gurevich, G; Hall Barrientos, P; Hamilton, D; Hornidge, D; Howdle, D; Huber, G M; Jude, T C; Kaeser, A; Kashevarov, V L; Keshelashvili, I; Kondratiev, R; Korolija, M; Krusche, B; Lazarev, A; Lisin, V; Livingston, K; MacGregor, I J D; Mancell, J; Manley, D M; Meyer, W; Middleton, D G; Mushkarenkov, A; Nefkens, B M K; Neganov, A; Nikolaev, A; Oberle, M; Ortega Spina, H.
Affiliation
  • Martel PP; Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
  • Miskimen R; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Aguar-Bartolome P; Department of Physics, Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada.
  • Ahrens J; Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
  • Akondi CS; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Annand JR; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Arends HJ; Department of Physics, Kent State University, Kent, Ohio 44242, USA.
  • Barnes W; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Beck R; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Bernstein A; Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
  • Borisov N; Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany.
  • Braghieri A; Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Briscoe WJ; Joint Institute for Nuclear Research (JINR), 141980 Dubna, Russia.
  • Cherepnya S; INFN Sezione di Pavia, I-27100 Pavia, Italy.
  • Collicott C; Department of Physics, The George Washington University, Washington, D.C. 20052, USA.
  • Costanza S; Lebedev Physical Institute, 119991 Moscow, Russia.
  • Denig A; Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
  • Dieterle M; Department of Astronomy and Physics, Saint Marys University, Halifax, Nova Scotia B3H 3C3, Canada.
  • Downie EJ; INFN Sezione di Pavia, I-27100 Pavia, Italy.
  • Fil'kov LV; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Garni S; Departement Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Glazier DI; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Gradl W; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Gurevich G; Department of Physics, The George Washington University, Washington, D.C. 20052, USA.
  • Hall Barrientos P; Lebedev Physical Institute, 119991 Moscow, Russia.
  • Hamilton D; Departement Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Hornidge D; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Howdle D; School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
  • Huber GM; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
  • Jude TC; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Kaeser A; School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
  • Kashevarov VL; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Keshelashvili I; Department of Physics, Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada.
  • Kondratiev R; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Korolija M; Department of Physics, University of Regina, Regina, Saskatchewan S4S 0A2, Canada.
  • Krusche B; School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
  • Lazarev A; Departement Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Lisin V; Lebedev Physical Institute, 119991 Moscow, Russia.
  • Livingston K; Departement Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • MacGregor IJ; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Mancell J; Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia.
  • Manley DM; Departement Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Meyer W; Joint Institute for Nuclear Research (JINR), 141980 Dubna, Russia.
  • Middleton DG; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Mushkarenkov A; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Nefkens BM; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Neganov A; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Nikolaev A; Department of Physics, Kent State University, Kent, Ohio 44242, USA.
  • Oberle M; Institut für Experimentalphysik, Ruhr-Universität, D-44780 Bochum, Germany.
  • Ortega Spina H; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
Phys Rev Lett ; 114(11): 112501, 2015 Mar 20.
Article in En | MEDLINE | ID: mdl-25839263
ABSTRACT
The spin polarizabilities of the nucleon describe how the spin of the nucleon responds to an incident polarized photon. The most model-independent way to extract the nucleon spin polarizabilities is through polarized Compton scattering. Double-polarized Compton scattering asymmetries on the proton were measured in the Δ(1232) region using circularly polarized incident photons and a transversely polarized proton target at the Mainz Microtron. Fits to asymmetry data were performed using a dispersion model calculation and a baryon chiral perturbation theory calculation, and a separation of all four proton spin polarizabilities in the multipole basis was achieved. The analysis based on a dispersion model calculation yields γ(E1E1)=-3.5±1.2, γ(M1M1)=3.16±0.85, γ(E1M2)=-0.7±1.2, and γ(M1E2)=1.99±0.29, in units of 10(-4) fm(4).
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2015 Document type: Article Affiliation country:
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2015 Document type: Article Affiliation country: