An update on the Kappa - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: New Focus data on Dplus -> Kminus piplus piminus are fitted to the kappa,together with earlier data from LASS, E791 and BES 2. There is a clear low massK-pi peak due to the kappa pole. Inclusion of the I=3-2 K-pi amplitude givesonly a marginal improvement to the fit and almost no change to the kappa peak.An improved formula for the kappa gives a better fit than that used earlier.The kappa pole moves to 663 +- 8stat +- 34syst -i329 +- 5stat +-22syst MeV. The K01430 pole is at 1427 +- 4stat +- 13stat -i135 +-5stat +- 20syst MeV.



Author: D.V.Bugg Queen Mary, University of London, UK

Source: https://arxiv.org/







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