Leptoquarks and Contact Interactions from a Global Analysis

Details Leptoquarks and Contact Interactions from a Global Analysis Leptoquarks and Contact Interactions from a Global Analysis

2000-06-16

arxiv.org/abs/hep-ph/0006196v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented at the 8th International Workshop on Deep Inelastic Scattering (DIS 2000), Liverpool, 25-30 of April 2000

Scientific paper

Data from HERA, LEP and the Tevatron, as well as from low energy experiments are used to constrain the scale of possible electron-quark contact interactions. Some models are found to describe the existing experimental data much better than the Standard Model. The possibility of scalar or vector leptoquark contribution is studied using the Buchmuller-Ruckl-Wyler effective model. Increase in the global probability observed for scenarios including S_1 or ~V_o leptoquark production/exchange corresponds to more than a 3 sigma effect. Assuming that a real leptoquark signal is observed, calculated is an allowed region in the coupling-mass plane.

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