Radiative decays of the {sigma}{sup 0}(1385) and {lambda}(1520) hyperons
Journal Article
·
· Physical Review. C, Nuclear Physics
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)
- Rice University, Houston, Texas 77005-1892 (United States)
- Rensselaer Polytechnic Institute, Troy, New York 12180-3590 (United States)
- Florida International University, Miami, Florida 33199 (United States)
- Commisariat a l'Energie Atomique-Saclay, Service de Physique Nucleaire, F-91191 Gif-sur-Yvette, Cedex (France); and others
The electromagnetic decays of the {sigma}{sup 0}(1385) and {lambda}(1520) hyperons were studied in photon-induced reactions {gamma}p{yields}K{sup +}{lambda}(1116){gamma} in the Large Acceptance Spectrometer detector at the Thomas Jefferson National Accelerator Facility. We report the first observation of the radiative decay of the {sigma}{sup 0}(1385) and a measurement of the {lambda}(1520) radiative decay width. For the {sigma}{sup 0}(1385){yields}{lambda}(1116){gamma} transition, we measured a partial width of 479{+-}120(stat){sub -100}{sup +81}(sys) keV, larger than all of the existing model predictions. For the {lambda}(1520){yields}{lambda}(1116){gamma} transition, we obtained a partial width of 167{+-}43(stat){sub -12}{sup +26}(sys) keV.
- OSTI ID:
- 20698683
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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