Investigation of the {eta}{eta} System in {pi}{sup -}p Interactions at a Momentum of 32.5 GeV/c at the GAMS-4{pi} Spectrometer

Journal Article · Wed Jun 01 04:00:00 EDT 2005 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/1.1954822· OSTI ID:20692820

Binon, F; Stroot, J P ^[1]; Blik, A M; Donskov, S V; Kolosov, V N; Lednev, A A; Lishin, V A; Mikhailov, Yu V; Polyakov, V A; Sadovsky, S A; Samoilenko, V D; Sobol, A E; Sugonyaev, V P; Khaustov, G V ^[2]; Inaba, S; Tsuru, T; Fujii, I; Yasu, Y ^[3]; Peigneux, J P ^[4]; Takamatsu, K ^[5]

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1. Universite Libre de Bruxelles, Institut Interuniversitaire des Science Nucleaires, Be-1050 Brussels (Belgium)
2. Institute for High-Energy Physics, Protvino, Moscow oblast, 142284 (Russian Federation)
3. KEK, National Laboratory for High Energy Physics, 1-1 Oho, Tsukuba-shi, Ibaraki-ken 305 (Japan)
4. LAPP, Laboratoire d'Annecy-le-Vieux de Physique des Particules, BP 110, F-7491 Annecy-le-Vieux CEDEX (France)
5. Engineering Faculty, Miyazaki University, Miyazaki (Japan); and others

The {eta}{eta} system produced in charge-exchange {pi}{sup -}p interaction at a momentum of 32.5 GeV/c is studied in an experiment performed with the GAMS-4{pi} spectrometer at the 70-GeV accelerator of the Institute for High-Energy Physics (IHEP, Protvino). A partial-wave analysis is performed in the mass range between 1.1 and 3.9 GeV for -t < 0.2 (GeV/c){sup 2}, S, D, G, and J waves being taken into account in this analysis. The S wave has a complicated structure, displaying peaks at about 1.5 and 1.7 GeV. These peaks are associated with the f{sub 0}(1500) and f{sub 0}(1710) mesons. One of the solutions (preferable one) involves the f{sub 0}(2200) and f{sub 2}(1950) resonances. The mass region above 2.4 GeV is dominated by the G wave. A broad state of mass about 3 GeV and width 0.7 GeV is found in the J wave. The parameters of the resonances in question and their production cross sections are measured.

• OSTI ID: 20692820
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 6 Vol. 68; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGE EXCHANGE
CROSS SECTIONS
ETA MESONS
F0-1590 MESONS
F0-1730 MESONS
F2-2010 MESONS
GEV RANGE
MULTIPARTICLE SPECTROMETERS
PARTICLE WIDTHS
PION MINUS REACTIONS
PION-PROTON INTERACTIONS
PIONS MINUS
RESONANCE PARTICLES
REST MASS
S WAVES