A confirming evidence for two pseudoscalar states with masses M-1 = 1405 +/- 5, Gamma(1) = 50 +/- 4 MeV/c(2) and M-2 = 1500 +/- 10, Gamma(2) = 100 +/- 20 MeV/c(2) is reported. The second pseudoscalar fills the nonet and leaves the first as an outsider supporting the hypothesis for its exotic nature. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
Evidence for two pseudoscalar states in the 1.4-1.5 GeV mass region
DE FALCO, ALESSANDRO;PUDDU, GIOVANNA;USAI, GIANLUCA;
1999-01-01
Abstract
A confirming evidence for two pseudoscalar states with masses M-1 = 1405 +/- 5, Gamma(1) = 50 +/- 4 MeV/c(2) and M-2 = 1500 +/- 10, Gamma(2) = 100 +/- 20 MeV/c(2) is reported. The second pseudoscalar fills the nonet and leaves the first as an outsider supporting the hypothesis for its exotic nature. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
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