Electroproduction of \(\Lambda\)(1405)
The electroproduction of \(K^+ \Lambda\) (1405) was studied by analyzing the E1F data set collected in Hall B at Jefferson Lab. The analysis utilized the decay channel \(\Sigma^+ \pi^-\) of the \(\Lambda\) (1405) and \(p \pi^0\) of the \(\Sigma^+\). Simulations of background, \(\Lambda\) (1405) and...
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Published in | arXiv.org |
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Main Authors | , , , |
Format | Paper |
Language | English |
Published |
Ithaca
Cornell University Library, arXiv.org
11.08.2011
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Subjects | |
Online Access | Get full text |
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Summary: | The electroproduction of \(K^+ \Lambda\) (1405) was studied by analyzing the E1F data set collected in Hall B at Jefferson Lab. The analysis utilized the decay channel \(\Sigma^+ \pi^-\) of the \(\Lambda\) (1405) and \(p \pi^0\) of the \(\Sigma^+\). Simulations of background, \(\Lambda\) (1405) and \(\Lambda\) (1520) production according to PDG values were performed by using standard CLAS analysis tools adapted for the E1F run. Fits of the acceptance-corrected simulations were made to the acceptance-corrected data to determine contributions from signal and background processes. The line shape of \(\Lambda\) (1405) varies with the four momentum transfer, \(Q^2\), and does not match the line shape based on PDG resonance parameters. It corresponds approximately to predictions of a recent two-pole meson-baryon picture of this state. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1108.1809 |