Object
Title: The Helicity E-asymmetry of the $\vec \gamma \vec N \to \pi N $ reaction in the $\Delta$(1232)-resonance region
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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Corporate Creators:
Physics Department, Faculty of Science, Sohag University, Sohag 82524, Egypt
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Abstract:
The helicity $E$-asymmetry of the reaction $\gamma (N, \pi)N$ by using polarized photon beams and polarized nucleon targets in the $\Delta$-resonance region is investigated. This asymmetry is an adequate observable to test the weakness in the pion photoproduction model, since it is sensitive to small but important amplitudes. We present results for the $E$-asymmetry as a function of pion angle at different photon lab energies and compare them with available experimental data. The isobar model MAID-2007 and an Effective Lagrangian Approach (ELA) are used to analyze the recent data from CLAS experiment. A satisfactory agreement between ELA and MAID-2007 models with the CLAS data is found in the case of $\gamma (p , \pi^0)p$ reaction
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oai:arar.sci.am:23420
Location of original object:
ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան
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Last modified:
Dec 13, 2023
In our library since:
Feb 27, 2020
Number of object content hits:
15
All available object's versions:
https://arar.sci.am/publication/26173
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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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| Edition name | Date |
|---|---|
| The Helicity E-asymmetry of the $\vec \gamma \vec N \to \pi N $ reaction in the $\Delta$(1232)-resonance region | Dec 13, 2023 |
