K to \pi\pi\ hadronic matrix elements of left-right current-current operators
High Energy Physics - Phenomenology
2015-06-16 v2 High Energy Physics - Lattice
Abstract
Effective \Delta S=1 four fermion operators involving left- and right-handed currents are relevant in left-right gauge extensions of the standard model and scalar extension of the Yukawa sector. They induce K to \pi\pi\ decays which are strictly constrained by experimental data, typically resulting in strong bounds on the new physics scales or parameters. We evaluate the K to \pi\pi\ hadronic matrix elements of such operators within the phenomenological framework of the Chiral Quark Model. The results are consistent with the estimates used in a previous work on TeV scale left-right symmetry, thus confirming the conclusions obtained there.
Cite
@article{arxiv.1305.5739,
title = {K to \pi\pi\ hadronic matrix elements of left-right current-current operators},
author = {Stefano Bertolini and Alessio Maiezza and Fabrizio Nesti},
journal= {arXiv preprint arXiv:1305.5739},
year = {2015}
}
Comments
Minor text changes. To appear on Phys. Rev. D