Evidence for two pseudoscalar resonances of eta. pi. /sup +/. pi. /sup -/ system in the D(1285) and E/iota regions

Journal Article · Mon Sep 15 04:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.1296· OSTI ID:5214015

Ando, A; Imai, K; Inaba, S; Inagaki, T; Inagaki, Y; Itano, A; Kobayashi, S; Maruyama, K; Murakami, A; Nakamura, T; others, and

High-statistics data on the ..pi../sup -/p..-->..eta..pi../sup +/..pi../sup -/n reaction at 8.06 GeV/c were obtained. An isobar-model partial-wave analysis was performed for the eta..pi pi.. system. The eta(1275) meson was confirmed as a narrow IJ/sup P//sup C/ -- 00/sup -+/ resonance. It decays through both delta..pi.. and epsiloneta. A narrow state with IJ/sup P//sup C/ -- 00/sup -+/ was found in an eta..pi pi.. decay channel at 1.42 GeV. It has a prominent peak in a delta..pi.. decay mode. No significant E(1420) signal with IJ/sup P//sup C/ -- 01/sup ++/ was found near the mass region of 1.42 GeV.

• Research Organization: National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan
• OSTI ID: 5214015
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:11; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
D-1285 RESONANCES
DATA
DECAY
E-1422 RESONANCES
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONIC PARTICLE DECAY
HADRONS
INFORMATION
INTERACTIONS
ISOBAR MODEL
MASS
MASS SPECTRA
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MISSING MASS
NEUTRONS
NUCLEONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
SPECTRA