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arXiv · 1006.2491

Higgs to Four Taus at ALEPH

James Beacham
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Abstract

A search has been performed on 683 pb$^{-1}$ of data collected by the ALEPH detector at the Large Electron-Positron (LEP), collider at centre-of-mass energies from 183 to 209 $\mathrm{GeV}$ looking for a Higgs boson decaying into four $τ$ leptons via intermediate pseudoscalar $a$ particles, for a Higgs mass 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 placed on $ξ^2 = \frac{σ(e^+ e^-\ra Z+h)}{σ_{SM}(e^+ e^-\ra Z+h)}\times(h\ra aa)\times(a\ra τ^+τ^-)^2$ in the $m_h, m_a$ plane. For $m_h < 107 \; \mathrm{GeV} / c^2$ and $m_a < 10 \; \mathrm{GeV} / c^2$, $ξ^2 > 1$ can be excluded at the 95\% confidence level.

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James Beacham. 2010-06-12. Higgs to Four Taus at ALEPH. https://arxiv.org/abs/1006.2491

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