Observation of a new JPC = 1+- isoscalar state in the reaction π-p → ωηn at 18 GeV/c

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

*Corresponding author for this work

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18 Scopus citations

Abstract

Results are presented on a partial wave analysis of the ωη final state produced in π-p interactions at 18 GeV/c where ω → π+π-π0, π0 → 2γ, and η → 2γ. We observe the previously unreported decay mode ω(1650) → ωη and a new 1+- meson state h1(1595) with a mass M = 1594(±15)(-60+10)MeV/c2 and a width Γ = 384(±60)(-100+70) MeV/c2. The h1(1595) state exhibits resonant-like phase motion relative to the ω (1650).

Original languageEnglish (US)
Pages (from-to)190-198
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume497
Issue number3-4
DOIs
StatePublished - Jan 11 2001

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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