Baryon Resonance Analysis from Two Pion Electroproduction at Jefferson Laboratory.

Technical Information Center Oak Ridge Tennessee

关键词: Baryon resonances;    Peon-Nucleon interactions;    Electroproduction;    Detectors;    Analysis;   

RP-ID  :  DE2004824394

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The cross section for the reaction ep(yields) e(prime)p(pi)(sup+)(pi)(sup -) was measured in the resonance region for 1.4 < W < 2.1 GeV and 0.5 < Q(sup 2)< 1.5 GeV(sup 2)/c(sup 2) using the CLAS detector at Jefferson Laboratory. The data show resonant structures not visible in previous experiments. The comparison of our data to a phenomenological prediction using available information on N* and (Delta) states shows an evident discrepancy. A better description of the data is obtained either by a sizeable change of the properties of the P(sub 13)(1720) resonance or by introducing a new baryon state, not reported in published analyses