Collider signatures of dark CP violation

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Cordero-Cid , A , Hernandez-Sanchez , J , Keus , V , Moretti , S , Rojas-Ciofalo , D & Sokolowska , D 2020 , ' Collider signatures of dark CP violation ' , Physical Review D , vol. 101 , no. 9 , 095023 .

Title: Collider signatures of dark CP violation
Author: Cordero-Cid, A.; Hernandez-Sanchez, J.; Keus, V.; Moretti, S.; Rojas-Ciofalo, D.; Sokolowska, D.
Contributor organization: Department of Physics
Particle Physics and Astrophysics
Helsinki Institute of Physics
Date: 2020-05-18
Language: eng
Number of pages: 12
Belongs to series: Physical Review D
ISSN: 2470-0010
Abstract: We study an extension of the Standard Model (SM) in which two copies of the SM-Higgs doublet which do not acquire a vacuum expectation value, and hence are inert, are added to the scalar sector. The lightest particle from the inert sector, which is protected from decaying to SM particles through the conservation of a Z(2) symmetry, is a viable dark matter candidate. We allow for CP violation in this extended dark sector and evaluate the ZZZ vertex and its CP-violating form factor in several benchmark scenarios. We provide collider signatures of this dark CP violation in the form of potentially observable asymmetries and cross sections for the f (f) over bar -> Z* -> ZZ process at both leptonic and hadronic machines.
Subject: BOSON
114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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