Bounds on Vector Leptoquarks

Details Bounds on Vector Leptoquarks Bounds on Vector Leptoquarks

1993-12-27

arxiv.org/abs/hep-ph/9312341v1

Phys.Rev.D50:536-541,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 Pages (LaTeX), including 1 uufiled postscript figure. WIS-93/119/Dec-PH

Scientific paper

10.1103/PhysRevD.50.536

We derive bounds on vector leptoquarks coupling to the first generation, using data from low energy experiments as well as from high energy accelerators. Similarly to the case of scalar leptoquarks, we find that the strongest indirect bounds arise from atomic parity violation and universality in leptonic pi decays. These bounds are considerably stronger than the first direct bounds of HERA, restricting vector leptoquarks that couple with electromagnetic strength to right-handed quarks to lie above 430 GeV or 460 GeV, and leptoquarks that couple with electromagnetic strength to left-handed quarks to lie above 1.3 TeV, 1.2 TeV and 1.5 TeV for the SU(2)_W singlet, doublet and triplet respectively.

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