Polarization Degress of Freedom in Charged Double Pion Porduction by Virtual Photons.

[摘要] Polarization degrees of freedom in exclusive channel of two charged pion electroproduction are studied in the Q(sup 2) region from 0.6 to 1.3 GeV(sup 2). Predictions for the contribution to the GDH integral as well as helicity components of the cross section are estimated in the framework of the phenomenological approach developed for the analysis of the two pion production data from CLAS (JLAB). Calculations show high sensitivity of the helicity difference sigma(sub 1/2) - sigma(sub 3/2) to baryon resonances with strongly different A(sub 1/2) and A(sub 3/2) photocouplings.

[发布机构] Technical Information Center Oak Ridge Tennessee

[学科分类] 工程和技术（综合）

[关键词] Photons;Pions;Production;Baryons;Cross sections