Observable Effects of General New Scalar Particles
Abstract
We classify all possible new scalar particles that can have renormalizable linear couplings to Standard Model fields and therefore be singly produced at colliders. We show that this classification exhausts the list of heavy scalar particles that contribute at the tree level to the Standard Model effective Lagrangian to dimension six. We compute this effective Lagrangian for a general scenario with an arbitrary number of new scalar particles and obtain flavor-preserving constraints on their couplings and masses. This completes the tree-level matching of the coefficients of dimension five and six operators in the effective Lagrangian to arbitrary extensions of the Standard Model.
Keywords
Cite
@article{arxiv.1412.8480,
title = {Observable Effects of General New Scalar Particles},
author = {Jorge de Blas and Mikael Chala and Manuel Perez-Victoria and Jose Santiago},
journal= {arXiv preprint arXiv:1412.8480},
year = {2015}
}
Comments
21 pages plus appendices, 28 tables. Improved discussion in Section 6. New references and comments. Minor corrections. Matches published version