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Search forΘ+(1540)Pentaquark in High-Statistics Measurement ofγp→K¯0K+nat CLAS
- Source :
- Physical Review Letters. 96
- Publication Year :
- 2006
- Publisher :
- American Physical Society (APS), 2006.
-
Abstract
- The exclusive reaction gammap-->K0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Theta+ (1540)-->nK+. The decay to nK+requires the assignment of strangeness S=+1 to any observed resonance. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility corresponding to an integrated luminosity of 70 pb-1. No evidence for the Theta+ pentaquark was found. Upper limits were set on the production cross section as function of center-of-mass angle and nK+ mass. The 95% C.L. upper limit on the total cross section for a narrow resonance at 1540 MeV was found to be 0.8 nb.
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 96
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi...........3c3d46f327f88bf2ea529f825aad3613