Published September 2016 | Version v1
Journal article Metadata-only

The impact of new polarization data from Bonn, Mainz and Jefferson Laboratory on γp → πN multipoles

Creators

  • 1. PNPI, NRS ''Kurchatov Institute'', Gatchina (Russian Federation)
  • 2. Universitaet Bonn, Helmholtz-Institut fuer Strahlen- und Kernphysik der, Bonn (Germany)
  • 3. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
  • 4. George Washington University, Department of Physics, Washington, DC (United States)
  • 5. Institut fuer Kernphysik der Universitaet Mainz, Mainz (Germany)
  • 6. Juelich Center for Hadron Physics, JARA FAME and JARA HPC, Forschungszentrum Juelich, Institut fuer Kernphysik, Institute for Advanced Simulation, Juelich (Germany)
  • 7. Universitaet Bonn, Bethe Center for Theoretical Physics, Bonn (Germany)

Description

New data on pion-photoproduction off the proton have been included in the partial-wave analyses Bonn-Gatchina and SAID and in the dynamical coupled-channel approach Juelich-Bonn. All reproduce the recent new data well: the double-polarization data for E, G, H, P and T in γp → π0p from ELSA, the beam asymmetry Σ for γp → π0p and π+n from Jefferson Laboratory, and the precise new differential cross section and beam asymmetry data Σ for γp → π0p from MAMI. The new fit results for the multipoles are compared with predictions not taking into account the new data. The mutual agreement is improved considerably but still far from being perfect. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2016-16284-9

Additional details

Identifiers

DOI
10.1140/epja/i2016-16284-9;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
52
Journal Issue
9
Journal Page Range
p. 1-18
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
48000390
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
COUPLED CHANNEL THEORY; DIFFERENTIAL CROSS SECTIONS; GEV RANGE 01-10; MEV RANGE 100-1000; MULTIPOLARITY; NEUTRONS; PARTIAL WAVES; PHOTON-PROTON INTERACTIONS; PHOTOPRODUCTION; PIONS NEUTRAL; PIONS PLUS; POLARIZED BEAMS; SCATTERING AMPLITUDES; SPIN ORIENTATION; THEORETICAL DATA
Descriptors DEC
AMPLITUDES; BARYONS; BASIC INTERACTIONS; BEAMS; BOSONS; CROSS SECTIONS; DATA; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; MESONS; MEV RANGE; NUCLEONS; NUMERICAL DATA; ORIENTATION; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PIONS; PSEUDOSCALAR MESONS