Evidence for a0(1450)-KK-bar in proton-antiproton annihilation at rest

We present evidence for a0(1450) decaying to KK̄ in p̄p annihilation at rest in liquid hydrogen in the final state KLK±π∓. This reaction is important for the study of the KK̄ decay mode of scalar resonances, in particular the isovectors a0(980) and a0(1450). The determination of the a0(1450) product...

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Detalles Bibliográficos
Autor principal: Heinzelmann, N
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics
Acceso en línea:https://dx.doi.org/10.1063/1.56024
http://cds.cern.ch/record/912209
Descripción
Sumario:We present evidence for a0(1450) decaying to KK̄ in p̄p annihilation at rest in liquid hydrogen in the final state KLK±π∓. This reaction is important for the study of the KK̄ decay mode of scalar resonances, in particular the isovectors a0(980) and a0(1450). The determination of the a0(1450) production also fixes the KK̄ coupling of the isoscalar f0(1500). We find B(p̄p→a0(1450)π;a0(1450)→KK̄)=(8.88±1.68)⋅10−4 and hence B(p̄p→f0(1500)π;f0(1500)→KK̄)=(4.52±0.36)⋅10−4.

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