Electroproduction of Λ(1405)

Haiyun Lu, Reinhard Schumacher, Brian Raue, Marianna Gabrielyan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The electroproductio of K+ Λ(1405) was studied by analyzing the EIF data set collected in Hall B at Jefferson Lab. The analysis utilized the decay channel Σ+π- of the Λ(1405) and pπ0 of the Σ+. Simulations of background, Λ(1405) and Λ(1520) production according to PDG values were performed by using standard CLAS anlaysis tools adapted for the EIF 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 Λ(1405) varies with the four momentum transfer, Q2, 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.

Original languageEnglish (US)
Title of host publication8th International Workshop on the Physics of Excited Nucleons, NSTAR 2011
Pages199-202
Number of pages4
DOIs
StatePublished - Dec 1 2012
Event8th International Workshop on the Physics of Excited Nucleons, NSTAR 2011 - Newport News, VA, United States
Duration: May 17 2011May 20 2011

Publication series

NameAIP Conference Proceedings
Volume1432
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other8th International Workshop on the Physics of Excited Nucleons, NSTAR 2011
Country/TerritoryUnited States
CityNewport News, VA
Period5/17/115/20/11

Keywords

  • Electroproduction
  • Hyperon
  • Λ(1405)

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