Partial-wave analysis of the {eta}{pi}{sup +}{pi}{sup -} system produced in the reaction {pi}{sup -}p{yields}{eta}{pi}{sup +}{pi}{sup -}n at 18 GeV/c

Journal Article · Sat Jul 01 04:00:00 EDT 2000 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.62.012003· OSTI ID:20216954

Manak, J J ^[1]; Adams, T ^[1]; Bishop, J M ^[1]; Cason, N M ^[1]; Ivanov, E I ^[1]; LoSecco, J M ^[1]; Sanjari, A H ^[1]; Shephard, W D ^[1]; Stienike, D L ^[1]; Taegar, S A ^[1]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

A partial-wave analysis of 9082 {eta}{pi}{sup +}{pi}{sup -}n events produced in the reaction {pi}{sup -}p{yields}{eta}{pi}{sup +}{pi}{sup -}n at 18.3 GeV/c has been carried out using data from experiment 852 at Brookhaven National Laboratory. The data are dominated by J{sup PC}=0{sup -+} partial waves consistent with observation of the {eta}(1295) and the {eta}(1440). The mass and width of the {eta}(1295) were determined to be 1282{+-}5 MeV and 66{+-}13 MeV, respectively, while the {eta}(1440) was observed with a mass of 1404{+-}6 MeV and a width of 80{+-}21 MeV. Other partial waves of importance include the 1{sup ++} and the 1{sup +-} waves. Results of the partial wave analysis are combined with results of other experiments to estimate f{sub 1}(1285) branching fractions. These values are considerably different from current values determined without the aid of amplitude analyses. (c) 2000 The American Physical Society.

• OSTI ID: 20216954
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 62; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
BROOKHAVEN AGS
ETA-1295 MESONS
ETA-1440 MESONS
EXPERIMENTAL DATA
F1-1285 MESONS
PARTIAL WAVES
PION-PROTON INTERACTIONS
PIONS MINUS
PIONS PLUS