Single $$\pi ^0$$ production off neutrons bound in deuteron with linearly polarized photons
Year: 2021
Type: article
Abstract: The quasifree $$\overrightarrow{\gamma } d\rightarrow \pi ^0n(p)$$ γ→d→π0n(p) photon beam asymmetry, $$\varSigma $$ Σ , has been measured at photon energies, $$E_\gamma $$ Eγ , from 390 to 610 MeV, corresponding to center of mass energy from 1.271 to 1.424 GeV, for the first time. The data were collected in the A2 hall of the MAMI electron beam facility with the Crystal Ball and TAPS calorimeters covering pion center-of-mass angles from 49 $$^\circ $$ ∘ to 148 $$^\circ $$ ∘ . In this kinematic region, polarization observables are sensitive to contributions from the $$\varDelta (1232)$$ Δ(1232) andN(1440) resonances. The extracted values of $$\varSigma $$ Σ have been compared to predictions based on partial-wave analyses (PWAs) of the existing pion photoproduction database. Our comparison includes the SAID, MAID and Bonn–Gatchina analyses; while a revised SAID fit, including the new $$\varSigma $$ Σ measurements, has also been performed. In addition, isospin symmetry is examined as a way to predict $$\pi ^0n$$ π0n photoproduction observables, based on fits to published data in the channels $$\pi ^0p$$ π0p , $$\pi ^+n$$ π+n and $$\pi ^-p$$ π-p .
Source: The European Physical Journal A
Authors: C. Mullen, S. Gardner, D. I. Glazier, S. J. D. Kay, K. Livingston, I. I. Strakovsky, R. L. Workman, S. Abt, P. Achenbach, F. Afzal, Z. Ahmed, C. S. Akondi, J. R. M. Annand, M. Bashkanov, R. Beck, M. Biroth, N. S. Borisov, A. Braghieri, W. J. Briscoe, F. Cividini, C. Collicott, S. Costanza, A. Denig, M. Dieterle, E. J. Downie, P. Drexler, S. Fegan, M. I. Ferretti-Bondy, D. Ghosal, I. Gorodnov, W. Gradl, M. Günther, G. Gurevic, L. Heijkenskjöld, D. Hornidge, G. M. Huber, N. Jermann, A. Kaeser, M. Korolija, V. L. Kashevarov, B. Krusche, V. V. Kulikov, A. Lazarev, S. Lutterer, I. J. D. MacGregor, D. M. Manley, P. P. Martel, M. A. Martemianov, C. Meier, R. Miskimen, M. Mocanu, E. Mornacchi, A. Neganov, M. Oberle, M. Ostrick, P. Otte, D. Paudyal, P. Pedroni, A. Powell, S. N. Prakhov, G. Reicherz, G. Ron, T. Rostomyan, C. Sfienti, V. Sokhoyan, K. Spieker, O. Steffen, Th. Strub, I. Supek, A. Thiel, M. Thiel, A. Thomas, M. Unverzagt, Yu. A. Usov, S. Wagner, N. K. Walford, D. P. Watts, D. Werthmüller, J. Wettig, L. Witthauer, M. Wolfes, N. Zachariou
Institutions: University of Glasgow, University of Regina, University of Edinburgh, George Washington University, University of Basel, Johannes Gutenberg University Mainz, University of Bonn, Kent State University, University of York, Joint Institute for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Institute for Nuclear Research, Mount Allison University, Ruđer Bošković Institute, Kurchatov Institute, University of Massachusetts Amherst, Ruhr University Bochum, Hebrew University of Jerusalem
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,280
Funders: National Science Foundation, U.S. Department of Energy, Strong, European Commission, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Russian Foundation for Basic Research, Office of Science, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Nuclear Physics, H2020 European Research Council
Awards: Nuclear Physics Consolidated Grant, NEUTRAL HYPERON SPECTROSCOPY WITH THE CRYSTAL BALL, G1441312571, G14744916, G1493520366, ANALYSIS OF HADRONIC AND ELECTROMAGNETIC INTERACTIONS, G1861050445, G1944889222, G21055810, G222768804, G2251371328, Erforschung der Möglichkeiten der Bildspektrometrie als Methode der Umweltanalytik in der Erdbeobachtung, G2630403202, G2710527523, Nuclear Physics Consolidated Grant 21-24 - University of York, G3111662533, The strong interaction at the frontier of knowledge: fundamental research and applications, INVESTIGATIONS OF BARYON SPECTROSCOPY VIA ELECTROMAGNETIC AND HADRONIC SCATTERING, G3795454412, Hunt for Exotic Particles: Dibaryons, Differentiation of smooth muscle cells. The development of structural and functional characteristics, G4023738850, ANALYSIS OF HADRONIC AND ELECTROMAGNETIC INTERACTIONS, G434337789, G4663097347, G4824140319, G5227872176, NEUTRAL HYPERON SPECTROSCOPY WITH THE CRYSTAL BALL, G5295540288, Investigation of the Strong Interaction: Elementary Systems and Nuclei, Investigations of the Strong Interaction, G5599649393, EXPERIMENTAL INVESTIGATIONS OF HADRON SPECTROSCOPY AT ACCELERATOR FACILITIES, Nuclear Physics Consolidated Grant, G6269788572, G628552264, Investigations of the Strong Interaction, Shining a light on strangeness, G663602996, Edinburgh Nuclear Physics Group Consolidated Grant Proposal, Transfer of Research Grant Funds (from ST/P004008/1 to ST/P003885/1), Investigations of the Strong Interaction, G723336386, BARYON SPECTROSCOPY THROUGH PARTIAL-WAVE ANALYSIS AND MESON PHOTOPRODUCTION, G7464526398, Exploring new states of matter (New Applicant scheme), G7581181636, EXPERIMENTAL INVESTIGATIONS OF HADRON SPECTROSCOPY AT ACCELERATOR FACILITIES, G8156563194, G8187754661, Jefferson Lab project grant, Engaging Education with Binding Blocks, Hunt for Exotic Particles: Dibaryons, G9000300370, Investigations of Hadron Structure using CB-TAPS at the Mainz Microtron
OpenAlex ID: W3139190893