학술논문
Measurement of beam-recoil observables Ox , Oz and target asymmetry T for the reaction $ \gamma$p → K+ $ \Lambda$.
Document Type
Article
Author
Source
Subject
*MESONS
*POLARIZATION (Nuclear physics)
*NUCLEAR reactions
*NEUTRON resonance
*COLLISIONS (Nuclear physics)
*NUCLEAR physics
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Language
ISSN
1434-6001
Abstract
The double polarization (beam-recoil) observables $\ensuremath O_x$ and $\ensuremath O_z$ have been measured for the reaction $ \gamma$ p → K+ $ \Lambda$ from threshold production to $\ensuremath E_{\gamma} \sim 1500$ MeV. The data were obtained with the linearly polarized beam of the GRAAL facility. Values for the target asymmetry T could also be extracted despite the use of an unpolarized target. Analyses of our results by two isobar models tend to confirm the necessity to include new or poorly known resonances in the 1900MeV mass region. [ABSTRACT FROM AUTHOR]