Measurement of a double spin asymmetry in the photoproduction of π--mesons on deuterons

. The paper presents results of a double polarization experiment to extract an asymmetry of the π - -meson photoproduction on a tensor-polarized deuteron by a linearly polarized photon. The energy of photons lies in the range (300-700) MeV. The measurements were performed on the internal tensor-pola...

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Bibliographic Details
Published in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2018, Vol.54 (10), p.1-6
Main Authors: Gauzshtein, V. V., Lazarenko, B. A., Loginov, A. Yu, Mishnev, S. I., Nikolenko, D. M., Rachek, I. A., Sadykov, R. Sh, Shestakov, Yu. V., Toporkov, D. K., Zevakov, S. A.
Format: Article
Language:English
Subjects:
Asymmetry
Deuterium
Deuterons
Electron beams
Energy storage
Hadrons
Heavy Ions
Linear polarization
Nuclear Fusion
Nuclear Physics
Particle and Nuclear Physics
Photons
Photoproduction
Physics
Physics and Astronomy
Pions
Rangefinding
Regular Article - Experimental Physics
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Summary:. The paper presents results of a double polarization experiment to extract an asymmetry of the π - -meson photoproduction on a tensor-polarized deuteron by a linearly polarized photon. The energy of photons lies in the range (300-700) MeV. The measurements were performed on the internal tensor-polarized deuterium target in the VEPP-3 electron-positron storage ring for the electron beam energy equal to 2 GeV. In the experiment, two protons and a scattered electron were detected in coincidence. The results of the measurement are compared with theoretical predictions made in the framework of impulse approximation, taking into account the π N and NN -rescattering in the final state.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/i2018-12608-1