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Diffraction dissociation, resonances and deck mechanism in the Kω systems of the reactions K±p→(K±ω)p
- Source :
- Nuclear Physics B. 181:1-21
- Publication Year :
- 1981
- Publisher :
- Elsevier BV, 1981.
-
Abstract
- A study is presented of the reactions K+p→(K+ω)p at 8.25 and 16 GeV/c and K−p→(K−ω)p at 10 and 16 GeV/c and comparison is made with K+ results at 10 GeV/c and K− at 7.3 GeV/c. The (K+ω) and (K−ω) mass spectra both present a strong enhancement very near threshold, while a second peak at ∼1.7 GeV is evident only with incident K− at the lower energies. The threshold peak has very weak energy dependence and is mostly due to the 1+S state which is produced conserving s-channel helicity. It is suggested that this is another decay mode of the resonance Q1(1290) known to decay mainly into Kϱ. The ratio of the Q1 coupling constants to the Kω and Kϱ decay channels, Rω = gKω2/gKϱ2 is determined to be 0.21±0.04. The enhancement at 1.7 GeV is predominantly, but not exclusively, due to the 2− state. While the K+ and K− induced reactions give basically similar results, small differences are observed that can be qualitatively explained in the framework of the Deck model.
Details
- ISSN :
- 05503213
- Volume :
- 181
- Database :
- OpenAIRE
- Journal :
- Nuclear Physics B
- Accession number :
- edsair.doi...........c7826d739cb73b359f1b1a323c6e5593
- Full Text :
- https://doi.org/10.1016/0550-3213(81)90504-6