Study of {eta}{pi}{sup -} and {pi}{sup +}{pi}{sup -}{pi}{sup -} systems in {pi}{sup -}p interactions at 18 GeV/c

Journal Article · Fri May 29 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56006· OSTI ID:21185741

Weygand, D P ^[1]

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1. Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)

The exclusive reactions {pi}{sup -}p{yields}{eta}{pi}{sup -}p and {pi}{sup -}p{yields}{pi}{sup +}{pi}{sup -}{pi}{sup -}p at 18 GeV/c have been studied at the MultiParticle Spectrometer at Brookhaven National Laboratory. Partial wave analyses have been performed on the 47,200 {eta}{pi}{sup -}p events and 250,000 {pi}{sup +}{pi}{sup -}{pi}{sup -}p events. In {eta}{pi}{sup -} a J{sup PC}=1{sup -+} exotic state of mass (1370{+-}16{sub -30}{sup +50}) MeV/c{sup 2} and width (385{+-}40{sub -105}{sup +65} MeV/c{sup 2}) is seen to interfere with the a{sub 2}(1320) with resonance-like phase motion, while in {pi}{sup +}{pi}{sup -}{pi}{sup -} a J{sup PC}=1{sup -+} exotic wave is observed with resonance-like behavior at a mass of (1533{+-}8 MeV/c{sup 2}) and width (158{+-}20 MeV/c{sup 2})

• OSTI ID: 21185741
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 432; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A2-1320 MESONS
BNL
ETA MESONS
EXCLUSIVE INTERACTIONS
GEV RANGE
MASS SPECTRA
MEV RANGE
MULTIPARTICLE SPECTROMETERS
PARTIAL WAVES
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PARTICLE WIDTHS
PION-PROTON INTERACTIONS
PIONS MINUS
PIONS PLUS
RESONANCE PARTICLES
REST MASS