Z physics constraints on vector leptoquarks

Z physics constraints on vector leptoquarks

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 × U(1) Y gaug...

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Bibliographic Details
Published in:Physics letters. B Vol. 396; no. 1; pp. 238 - 244
Main Authors: Éboli, O.J.P., Gonzalez-Garcia, M.C., Mizukoshi, J.K.
Format: Journal Article
Language:English
Published: Elsevier B.V 20-03-1997
Online Access:Get full text
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Summary: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 × 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.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(97)00123-8