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Coupled-channel analysis of the pi eta and KK systems near KK threshold
It is shown that the behaviour of the pi eta and KK I=1 systems near KK threshold may be explained by a two-channel resonance with very large partial widths. The narrowness of the pi eta peak at 980 MeV can be explained by the action of unitarity and analyticity at KK threshold (a cusp phenomenon)....
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| Lenguaje: | eng |
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1976
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| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(76)90654-7 http://cds.cern.ch/record/874002 |