ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The reactionpp→p f (ηπ+π−)p s where the ηπ+π− system is centrally produced has been studied at 300 GeV/c incident momentum at the CERN Ω spectrometer. The ηπ± mass spectrum shows a strong δ/a 0(980) signal having a mass of 984±4 and Γ=95±14 MeV. The ηπ+π− mass spectrum shows η′ andf 1(1285) signals over little background. A spin-parity analysis of the ηπ+π− system shows evidence for aJ PC =1++ peak at thef 1(1285) mass but no evidence for the pseudoscalar states η(1270) andl/η(1440). No evidence is found for the ηππ decay of theE/f 1(1420) meson for which we set an upper limit BR(E/f 1(1420)→ηππ)〈0.1 at 95% cl.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01559432