2020/12/29 by Nabarun Chakrabarty, Chakrabarty, Nabarun
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.2012.14870
1 table, 9 captioned figures, 21 pages + references
arxiv created 2020/12/29 · openalex publication_date 2020/12/29 · arxiv updated 2021/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
An H+ W- Z vertex, i.e, the interaction connecting a singly charged physical scalar to the W^±,~Z gauge bosons is absent at the tree level in a scalar sector comprising only SU(2)L doublets. However, the interaction can be generated radiatively in such a case, an example of which is a two-Higgs doublet model. In this study, we extend a two-Higgs doublet scenario by additional SU(2)L scalar doublets. Upon endowing with appropriate discrete symmetries, these additional doublets so introduced can furnish successful candidates of dark matter. Interestingly, the same "dark" scalars can also radiatively enhance the strength of the H+ W- Z interaction. We compute the H+ W- Z vertex at one-loop in a non-linear gauge that eliminates certain unphysical interactions. While all possible constraints are taken into account in doing so, particular emphasis is given to the ones stemming from dark matter. Correlations between the dark matter observables and the H+ W- Z interaction-strength are studied. The study thus connects a radiatively generated H+ W- Z vertex to dark matter phenomenology.