Restriction on SUSY Masses from $Z\to hadrons$

M. J. Herrero; F. J. Yndurain

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arXiv · hep-ph/0104191

Restriction on SUSY Masses from $Z\to hadrons$

M. J. Herrero·F. J. Yndurain

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Abstract

We remark that the precision of recent determinations of $α_s(M^2_Z)$ is such that one can get bounds on supersymmetric partner masses (squark and gluino) by requiring consistency of determinations of $α_s$ at "low" energies, where those particles do not contribute, and on the $Z$ peak. For approximately degenerate squarks and gluinos with mass $\widetilde{m}$, we find the bound $\widetilde{m}\geq 173$ GeV, at the $2σ$ level. At the $2.5σ$ level, $\widetilde{m}\geq 121$ GeV.

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BibTeX RIS

M. J. Herrero, F. J. Yndurain. 2001-04-19. Restriction on SUSY Masses from $Z\to hadrons$. https://arxiv.org/abs/hep-ph/0104191

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