$4π$ Decay Modes of the $f_0(1500)$ Resonance

Details $4π$ Decay Modes of the $f_0(1500)$ Resonance $4π$ Decay Modes of the $f_0(1500)$ Resonance

1998-08-05

arxiv.org/abs/hep-ph/9808228v1

Phys.Lett.B438:21-26,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 1 figure

Scientific paper

10.1016/S0370-2693(98)01044-2

We investigate the two-body decay modes $\rho\rho, \pi\pi^{\ast}(1300)$ and $\sigma \sigma$ of the $f_0(1500)$, all leading to the $4\pi$ decay channel, in a three-state mixing scheme, where the $f_0(1500)$ is a mixture of the lowest-lying scalar glueball with the nearby isoscalar states of the $0^{++} Q\bar{Q}$ nonet. In the leading order of this scheme, the decay mechanism of the $f_0(1500)$ proceeds dominantly via its quarkonia components, which can be described in the framework of the $^3P_0$ $Q\bar Q$ pair creation model. We predict the hierarchy of decay branching ratios B with $B(\rho \rho) ^{>}_{\sim} B(\pi\pi) ^{>}_{\sim} B(\sigma \sigma) > B(\pi\pi^{\ast})$, providing a key signature for the proposed mixing scheme in this leading order approach.

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