English

$\epsilon'/\epsilon$ from charged-Higgs-induced gluonic dipole operators

High Energy Physics - Phenomenology 2018-11-20 v2 High Energy Physics - Experiment

Abstract

We study the effect of charged-Higgs-induced chromomagnetic operator, Q8G()sˉσμνTaγ5dGμνaQ_{8G}(-) \equiv \bar s \sigma^{\mu \nu} T^a \gamma_5 d G^a_{\mu \nu}, on the Kaon direct CP violation Re(ϵ/ϵ)Re(\epsilon'/\epsilon). Using the matrix element ππO8G()K0\langle \pi \pi | O_{8G}(-) | K^0 \rangle recently obtained by a large NcN_c dual QCD approach, we find that if the Kobayashi-Maskawa phase is the origin of CP violation, the charged-Higgs-induced gluon penguin dipole operator in the type-III two-Higgs-doublet model can explain the measured Re(ϵ/ϵ)Re(\epsilon'/\epsilon) when the constraints from the relevant low energy flavor physics, such as ΔB(K)=2\Delta B(K)=2, BXsγB\to X_s \gamma, and Kaon indirect CP violation parameter ϵ\epsilon, are included.

Keywords

Cite

@article{arxiv.1805.07522,
  title  = {$\epsilon'/\epsilon$ from charged-Higgs-induced gluonic dipole operators},
  author = {Chuan-Hung Chen and Takaaki Nomura},
  journal= {arXiv preprint arXiv:1805.07522},
  year   = {2018}
}

Comments

15 pages, 4 figures, version accepted for publication in Physics Letters B