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Properties of thea0(980)meson

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields1998Vol. 59(1)

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S. Teige, B. Brabson, R.R. Crittenden, A. Dzierba, Jeffrey L. Gunter, R. Lindenbusch, D. R. Rust, E. Scott, P. Smith, T. Sulanke, S. U. Chung, R. Hackenburg, C. Olchanski, C. Straßburger, D. P. Weygand, H. J. Willutzki, Z. Bar‐Yam, J. P. Cummings, J. Dowd, P. Eugenio, M. Hayek, W. Kern, E. King, N. Shenhav, V.A. Bodyagin, A. I. Demianov, O. L. Kodolova, V. L. Korotkikh, M. Kostin, A. I. Ostrovidov, L. Sarycheva, N. B. Sinev, I. N. Vardanyan, A. A. Yershov, D. S. Brown, T. K. Pedlar, K. K. Seth, J. Wise, G. Zhao, T. Adams, J.M. Bishop, N. M. Cason, E. I. IVANOV, J. M. LoSecco, J. J. Manak, A.H. Sanjari, W. D. Shephard, D.L. Stienike, S. A. Taegar, David R. Thompson, S. P. Denisov, V. Dorofeev, I. Kachaev, V. V. Lipaev, А. В. Попов, D.I. Ryabchikov, G. S. Adams, J. Kühn, J. Napolitano, M. Nozar, J. A. Smith, D. B. White, M. Witkowski

Abstract

Events of the type ${\ensuremath{\pi}}^{\ensuremath{-}}\stackrel{\ensuremath{\rightarrow}}{p}n\ensuremath{\eta}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${\ensuremath{\pi}}^{\ensuremath{-}}\stackrel{\ensuremath{\rightarrow}}{p}n\ensuremath{\eta}{\ensuremath{\pi}}^{0}$ at $18\mathrm{GeV}/c$ are analyzed. The mass and width of the neutral and charged ${a}_{0}(980)$ were determined. The neutral ${a}_{0}$ is found to have a mass of $(0.991\ifmmode\pm\else\textpm\fi{}0.0025)\mathrm{GeV}{/c}^{2}$ and a width of $(0.069\ifmmode\pm\else\textpm\fi{}0.011)\mathrm{GeV}{/c}^{2}.$ A partial wave analysis technique yields $(0.9983\ifmmode\pm\else\textpm\fi{}0.0040)$ and $(0.072\ifmmode\pm\else\textpm\fi{}0.010)\mathrm{GeV}{/c}^{2}$ for the mass and width of the charged ${a}_{0}.$

Citations Over TimeTop 10% of 1998 papers

Abstract

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