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

Research output: Contribution to journalArticlepeer-review

22 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

Funding

We are grateful for the support of the technical staffs of the MPS, AGS, BNL, and various collaborating institutions. This research was supported in part by the US Department of Energy, the National Science Foundation, and the Russian State Committee for Science and Technology.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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