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Measurement of Compton Scattering at MAMI for the Extraction of the Electric and Magnetic Polarizabilities of the Proton.
Mornacchi, E; Martel, P P; Abt, S; Achenbach, P; Adlarson, P; Afzal, F; Ahmed, Z; Annand, J R M; Arends, H J; Bashkanov, M; Beck, R; Biroth, M; Borisov, N; Braghieri, A; Briscoe, W J; Cividini, F; Collicott, C; Costanza, S; Denig, A; Dolzhikov, A S; Downie, E J; Drexler, P; Fegan, S; Gardner, S; Ghosal, D; Glazier, D I; Gorodnov, I; Gradl, W; Günther, M; Gurevich, D; Heijkenskjöld, L; Hornidge, D; Huber, G M; Käser, A; Kashevarov, V L; Kay, S J D; Korolija, M; Krusche, B; Lazarev, A; Livingston, K; Lutterer, S; MacGregor, I J D; Manley, D M; Miskimen, R; Mocanu, M; Mullen, C; Neganov, A; Neiser, A; Ostrick, M; Paudyal, D.
Affiliation
  • Mornacchi E; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Martel PP; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Abt S; Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada.
  • Achenbach P; Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Adlarson P; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Afzal F; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Ahmed Z; Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany.
  • Annand JRM; University of Regina, Regina, Saskatchewan S4S 0A2, Canada.
  • Arends HJ; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Bashkanov M; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Beck R; Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.
  • Biroth M; Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany.
  • Borisov N; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Braghieri A; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Briscoe WJ; INFN Sezione di Pavia, I-27100 Pavia, Italy.
  • Cividini F; The George Washington University, Washington, D.C. 20052-0001, USA.
  • Collicott C; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Costanza S; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Denig A; INFN Sezione di Pavia, I-27100 Pavia, Italy.
  • Dolzhikov AS; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Downie EJ; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Drexler P; The George Washington University, Washington, D.C. 20052-0001, USA.
  • Fegan S; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Gardner S; Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.
  • Ghosal D; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Glazier DI; Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Gorodnov I; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Gradl W; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Günther M; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Gurevich D; Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Heijkenskjöld L; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Hornidge D; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Huber GM; Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada.
  • Käser A; University of Regina, Regina, Saskatchewan S4S 0A2, Canada.
  • Kashevarov VL; Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Kay SJD; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Korolija M; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Krusche B; University of Regina, Regina, Saskatchewan S4S 0A2, Canada.
  • Lazarev A; Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia.
  • Livingston K; Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Lutterer S; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • MacGregor IJD; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Manley DM; Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland.
  • Miskimen R; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Mocanu M; Kent State University, Kent, Ohio 44242-0001, USA.
  • Mullen C; University of Massachusetts, Amherst, Massachusetts 01003, USA.
  • Neganov A; Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.
  • Neiser A; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Ostrick M; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Paudyal D; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
Phys Rev Lett ; 128(13): 132503, 2022 Apr 01.
Article in En | MEDLINE | ID: mdl-35426697
ABSTRACT
A precise measurement of the differential cross sections dσ/dΩ and the linearly polarized photon beam asymmetry Σ_{3} for Compton scattering on the proton below pion threshold has been performed with a tagged photon beam and almost 4π detector at the Mainz Microtron. The incident photons were produced by the recently upgraded Glasgow-Mainz photon tagging facility and impinged on a cryogenic liquid hydrogen target, with the scattered photons detected in the Crystal Ball/TAPS setup. Using the highest statistics Compton scattering data ever measured on the proton along with two effective field theories (both covariant baryon and heavy-baryon) and one fixed-t dispersion relation model, constraining the fits with the Baldin sum rule, we have obtained the proton electric and magnetic polarizabilities with unprecedented precision α_{E1}=10.99±0.16±0.47±0.17±0.34, ß_{M1}=3.14±0.21±0.24±0.20±0.35; in units of 10^{-4} fm^{3} where the errors are statistical, systematic, spin polarizability dependent, and model dependent.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2022 Document type: Article Affiliation country: Alemania
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2022 Document type: Article Affiliation country: Alemania