Bounds on Scalar Leptoquarks from Z Physics

Details Bounds on Scalar Leptoquarks from Z Physics Bounds on Scalar Leptoquarks from Z Physics

1994-11-25

arxiv.org/abs/hep-ph/9411392v1

Nucl.Phys.B443:20-36,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX 3.0, 26 pages, 4 postscript figures included as uufile

Scientific paper

10.1016/0550-3213(95)00162-L

We analyse 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. We show that the bounds on leptoquarks that couple to the top quark are much stronger than the ones obtained from low energy experiments.

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