Bounds on Scalar Leptoquarks from the LEP Data
classification
✦ hep-ph
keywords
leptoquarksscalarboundsdatacomingconstraintscontributionscorrections
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We obtain the constraints on scalar leptoquarks coming from radiative corrections to $Z$ physics. We perform a global fitting to the LEP data including the contributions of the most general effective Lagrangian for scalar leptoquarks, which exhibits the $SU(2)_L \times U(1)_Y$ gauge invariance. Our bounds on leptoquarks that couple to the top quark are much stronger than the ones obtained from low energy experiments.
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