Z Physics Constraints on Vector Leptoquarks

Details Z Physics Constraints on Vector Leptoquarks Z Physics Constraints on Vector Leptoquarks

1996-12-04

arxiv.org/abs/hep-ph/9612254v1

Phys.Lett.B396:238-244,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, revtex, 3 figures included

Scientific paper

10.1016/S0370-2693(97)00123-8

We analyze the constraints on vector leptoquarks coming from radiative corrections to $Z$ physics. We perform a global fitting to the LEP data including the oblique and non-universal contributions of the most general effective Lagrangian for vector leptoquarks, which exhibits the $SU(2)_L \times U(1)_Y$ gauge invariance. We show that the $Z$ physics leads to stronger bounds on second and third generation vectors leptoquarks than the ones obtained from low energy and the current collider experiments.

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