Collider signatures of dark CP violation

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http://hdl.handle.net/10138/315753

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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 . https://doi.org/10.1103/PhysRevD.101.095023

Title: Collider signatures of dark CP violation
Author: Cordero-Cid, A.; Hernandez-Sanchez, J.; Keus, V.; Moretti, S.; Rojas-Ciofalo, D.; Sokolowska, D.
Contributor: University of Helsinki, Department of Physics
Date: 2020-05-18
Language: eng
Number of pages: 12
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/315753
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
PHYSICS
MATTER
LHC
114 Physical sciences
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