Observation of the f{sub 2}(1525) resonance in the {eta}{eta} system produced in K{sup -}p interactions at a momentum of 32.5 GeV/c

Journal Article · Mon Oct 15 04:00:00 EDT 2007 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778807100055· OSTI ID:21077598

Binon, F ^[1]; Blick, A M; Donskov, S V ^[2]; Inaba, S ^[3]; Kut'in, V M; Ladygin, M E; Lednev, A A; Lishin, V A; Mikhailov, Yu V ^[2]; Peigneux, J P ^[4]; Polyakov, V A; Samoylenko, V D; Sobol, A E ^[2]; Stroot, J P ^[1]; Sugonyaev, V P ^[2]; Takamatsu, K ^[5]; Tsuru, T; Fujii, Y ^[3]; Khaustov, G V ^[2]

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1. Institut Interuniversitaire des Science Nucleares (Belgium)
2. Institute of High Energy Physics (Russian Federation)
3. KEK, National Laboratory for High Energy Physics (Japan)
4. LAPP, Laboratoire d'Annecy-le-Vieux de Physique des Particules (France)
5. University of Miyazaki, Engineering Faculty (Japan)

The reaction K{sup -}p {sup {yields}} {eta}{eta}({lambda}/{sigma}{sup 0}) at a momentum of 32.5 GeV/c was studied for the first time. The experiment was performed by using the GAMS-4{pi} spectrometer at the 70-GeV accelerator of the Institute for High Energy Physics (IHEP, Protvino). The f{sub 2}(1525) resonance was observed in the effective-mass spectrum of the {eta}{eta} system at a low background level. The cross section for f{sub 2}(1525) production was measured. The branching ratio for f{sub 2}(1525)-meson decay to {eta}{eta} and KK-bar was found to be R = 0.119 {+-} 0.015(stat.) {+-} 0.036(syst.), which is in agreement with the world-average value.

• OSTI ID: 21077598
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 10 Vol. 70; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BRANCHING RATIO
CROSS SECTIONS
EFFECTIVE MASS
GEV RANGE 10-100
INTERACTIONS
KAON-PROTON INTERACTIONS
KAONS MINUS
MESONS
PARTICLE DECAY
RESONANCE
SIGMA NEUTRAL PARTICLES
SPECTRA
SPECTROMETERS