# Loop induced ${H}^{±}\to {W}^{±}Z$ decays in the aligned two-Higgs-doublet model

Abbas, Gauhar (Department of Physics, Indian Institute of Technology (BHU), Varanasi 221005, India) ; Das, Diganta (Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India) ; Patra, Monalisa (Jožef Stefan Institute, Jamova 39, P. O. Box 3000, 1001 Ljubljana, Slovenia)

07 December 2018

Abstract: We present a complete one-loop computation of the ${H}^{±}\to {W}^{±}Z$ decay in the aligned two-Higgs-doublet model. The constraints from the electroweak precision observables, perturbative unitarity, vacuum stability, and flavor physics are all taken into account along with the latest Large Hadron Collider searches for the charged Higgs. It is observed that a large enhancement of the branching ratio can be obtained in the limit where there is a large splitting between the charged and pseudoscalar Higgs masses as well as for the largest allowed values of the alignment parameter ${\varsigma }_{u}$. We find that the maximum possible branching ratio in the case of a large mass splitting between ${m}_{{H}^{±}}$ and ${m}_{A}$ is $\approx {10}^{-3}$ for ${m}_{{H}^{±}}\in \left(200,700\right)\text{}\text{}\mathrm{GeV}$.

Published in: Physical Review D 98 (2018)