Measurement of ep {yields} e{prime}p{pi}{sup +}{pi}{sup -} and Baryon Resonance Analysis
Journal Article
·
· Physical Review Letters
OSTI ID:837555
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 shows 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.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 837555
- Report Number(s):
- JLAB-PHY-02-138; DOE/ER/40150-3188; hep-ex/0210054
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 91; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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