Light Gluino Mass and Condensate from Properties of $η$ and $η'$

Details Light Gluino Mass and Condensate from Properties of $η$ and $η'$ Light Gluino Mass and Condensate from Properties of $η$ and $η'$

1996-08-15

arxiv.org/abs/hep-ph/9608330v2

Phys.Lett. B397 (1997) 104-111

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LATEX file, 1 PS fig. Some discussions are added, to be published in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(97)00151-2

We investigate whether known properties of the $\eta'$ meson are consistent with its being the Goldstone boson of the spontaneously broken anomaly-free R symmetry required in the light gluino scenario. We fit the masses and $2\gamma$ decays of the $\eta$ and $\eta'$ mesons, and also their production in radiative $J/\psi$ decays. We find that the $\eta-\eta'$ system is well-described in the light gluino scenario, if $m_\lambda\simeq (84-144) MeV$ and $<{\bar\lambda}\lambda> \simeq -(0.15-0.36) GeV^3$. These values are in the range expected when the gluino gets its mass entirely from radiative corrections.

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