Study of the {eta}{pi}{sup 0} system in the mass range up to 1200 MeV

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

DOI:https://doi.org/10.1063/1.56089· OSTI ID:21199120

Alde, D; Binon, F G; Boutemeur, M; Bricman, C; Donskov, S V; Gouanere, M; Inyakin, A V; Inaba, S; Kachanov, V A; Khaustov, G V; Knapp, E A; Kondashov, A A; Lednev, A A; Lishin, V A; Peigneux, J P; Poulet, M; Prokoshkin, Yu D; Sadovsky, S A; Samoylenko, V D; Shagin, P M ^[1]

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1. IHEP, Protvino, Moscow reg., 142284 (Russian Federation)

The reaction {pi}{sup -}p{yields}{eta}{pi}{sup 0}n has been studied with GAMS-2000 spectrometer in the secondary 38 GeV/c {pi}{sup -}-beam of the IHEP U-70 accelerator. Partial wave analysis of the reaction has been performed in the {eta}{pi}{sup 0} mass range up to 1200 MeV. The a{sub 0}(980)-meson is seen as a sharp peak in S-wave. The t-dependence of a{sub 0}(980) production cross section has been studied. Dominant production of the a{sub 0}(980) at a small transfer momentum t confirms the hypothesis of Achasov and Shestakov about significant contribution of the {rho}{sub 2} exchange (I{sup G}J{sup PC}=1{sup +}2{sup --}) in the mechanism of a{sub 0}(980) meson production in t-channel of the reaction.

• OSTI ID: 21199120
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 432; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A0-980 MESONS
COLOR MODEL
CROSS SECTIONS
ETA MESONS
GEV RANGE
MEV RANGE
MOMENTUM TRANSFER
PARTICLE PRODUCTION
PION-PROTON INTERACTIONS
PIONS MINUS
PIONS NEUTRAL
RESONANCE PARTICLES
REST MASS
S WAVES
T CHANNEL