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arXiv · hep-ph/9303273

Perturbative QCD data are consistent with light gluinos

J. Ellis·D. Nanopoulos·D. Ross
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Abstract

We discuss systematically the consistency of light gluinos with data on perturbative QCD from deep inelastic scattering, quarkonia, jets at LEP, and the total hadronic cross-section in ${e^+ e^-}$ annihilation on the $Z$ peak and elsewhere. We demonstrate that, in addition to the well-known increase in the value of $α_s(m_Z)$ inferred from lower-energy data due to the slower running of $α_s$ in the presence of light gluinos, the value of $α_s(m_Z)$ extracted from the LEP data must also be $increased$, as a result of including the effects of virtual light gluinos. The effect of these increases in other estimates of $α_s(m_Z)$ is to make them more consistent with the value extracted from the total $e^+ e^-$ cross-section, which would otherwise appear distinctly higher. We discuss the possibility of looking for light gluinos in four-jet events at LEP, and their possible implications for scaling violations at HERA.

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J. Ellis, D. Nanopoulos, D. Ross. 1993-03-17. Perturbative QCD data are consistent with light gluinos. https://doi.org/10.1016/0370-2693(93)91070-4

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