Global Constraints on Lepton-Quark Contact Interactions
Abstract
The Large Hadron Collider can do precision physics at a level that is competitive with electroweak precision constraints when probing physics beyond the Standard Model. We present a simple yet general parameterization of the effect of an arbitrary number of lepton-quark contact interactions on any di-lepton observable at hadron colliders. This parameterization can be easily adopted by the experimental collaborations to put bounds on arbitrary combinations of lepton-quark contact interactions. We compute the corresponding bounds from current di-lepton resonance searches at the LHC and find that they are competitive with and often complementary to indirect constraints from electroweak precision data. We combine all current constraints in a global analysis to obtain the most stringent bounds on lepton-quark contact interactions. We also show that the high-energy phase of the LHC has a unique potential in terms of discovery and discrimination power among different types of lepton-quark contact interactions.
Cite
@article{arxiv.1307.5068,
title = {Global Constraints on Lepton-Quark Contact Interactions},
author = {J. de Blas and M. Chala and Jose Santiago},
journal= {arXiv preprint arXiv:1307.5068},
year = {2013}
}
Comments
Latex 8 pages, 1 figure. References added, minor changes. Version published in Phys. Rev. D