Measurement of the Asymmetry of Photoproduction of π– Mesons on Linearly Polarized Deuterons by Linearly Polarized Photons

The first results of a double polarization experiment to extract the asymmetry of the reaction of photoproduction of a π - meson by a linearly polarized photon on a tensor-polarized deuteron in the energy range of the virtual photon (300–700 MeV) are presented. The measurements were performed on an...

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Bibliographic Details
Published in:Russian physics journal 2018-05, Vol.61 (1), p.115-122
Main Authors: Gauzshtein, V. V., Zevakov, S. A., Levchuk, M. I., Loginov, A. Yu, Nikolenko, D. M., Rachek, I. A., Sadykov, R. Sh, Toporkov, D. K., Shestakov, Yu. V.
Format: Article
Language:English
Subjects:
ASYMMETRY
Condensed Matter Physics
Deuterium
DEUTERIUM TARGET
DEUTERONS
ELECTRON BEAMS
ELECTRONS
Energy storage
GEV RANGE
Hadrons
Heavy Ions
Lasers
Mathematical and Computational Physics
MEV RANGE
Nuclear Physics
Optical Devices
Optics
PHI MESONS
Photonics
PHOTONS
PHOTOPRODUCTION
Physics
Physics and Astronomy
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pions
POLARIZATION
POSITRONS
PROTONS
RESCATTERING
Theoretical
VEPP-3
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Summary:The first results of a double polarization experiment to extract the asymmetry of the reaction of photoproduction of a π - meson by a linearly polarized photon on a tensor-polarized deuteron in the energy range of the virtual photon (300–700 MeV) are presented. The measurements were performed on an internal tensor-polarized deuterium target in the VEPP-3 electron-positron storage ring for the electron beam energy equal to 2 GeV. The experiment employed the method of recording two protons and the scattered electron in coincidence. The obtained measurement results are compared with the theoretical predictions obtained in the momentum approximation with allowance for πN and NN rescattering in the final state.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-018-1374-x