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Abstract: A search has been performed on 683 pb$^{-1}$ of data collected by the ALEPHdetector at the Large Electron-Positron LEP, collider at centre-of-massenergies from 183 to 209 $\mathrm{GeV}$ looking for a Higgs boson decaying intofour $\tau$ leptons via intermediate pseudoscalar $a$ particles, for a Higgsmass range of 70 to 114 $\mathrm{GeV} - c^2$ and an $a$ mass range of 4 to 12$\mathrm{GeV} - c^2$. No excess above background is seen and a limit is placedon $\xi^2 = \frac{\sigmae^+ e^- a Z+h}{\sigma {SM}e^+ e^- aZ+h}\timesh a aa\timesa a \tau^+\tau^-^2$ in the $m h, m a$ plane. For$m h < 107 \; \mathrm{GeV} - c^2$ and $m a < 10 \; \mathrm{GeV} - c^2$, $\xi^2> 1$ can be excluded at the 95\% confidence level.

Autor: James Beacham

Fuente: https://arxiv.org/

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