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- W2090848188 startingPage "2801" @default.
- W2090848188 abstract "A discussion of some recent experimental results on threshold enhancements in the reaction ${ensuremath{pi}}^{ensuremath{-}}pensuremath{rightarrow}{ensuremath{pi}}^{+}{ensuremath{pi}}^{ensuremath{-}}{ensuremath{pi}}^{ensuremath{-}}p$ is given in terms of a diffractive-dissociation model. In particular, we try to explain why the quasi-two-particle enhancements observed in ${ensuremath{pi}}_{a}^{ensuremath{-}}({ensuremath{pi}}^{+}{ensuremath{pi}}_{b}^{ensuremath{-}})$ for different ${ensuremath{pi}}^{+}{ensuremath{pi}}_{b}^{ensuremath{-}}$ masses subsequently disappear when those (${ensuremath{pi}}^{+}{ensuremath{pi}}_{a}^{ensuremath{-}}$) events in the $ensuremath{rho}$ band are removed. The model is a double-Regge-exchange model symmetrized between the two identical pions. The parameters of the model are adjusted to fit the over-all $2ensuremath{pi}$ and $3ensuremath{pi}$ spectra, and the question of the enhancements and their disappearance is studied numerically. The model is able to reproduce the observed effects, provided a truncated Breit-Wigner line shape is used for the $ensuremath{rho}$ meson." @default.
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- W2090848188 date "1971-06-01" @default.
- W2090848188 modified "2023-09-26" @default.
- W2090848188 title "Threshold Enhancements, Identical Particles, and Diffractive Dissociation" @default.
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- W2090848188 doi "https://doi.org/10.1103/physrevd.3.2801" @default.
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