The C2HDM revisited
Abstract The complex two-Higgs doublet model is one of the simplest ways to extend the scalar sector of the Standard Model to include a new source of CP-violation. The model has been used as a benchmark model to search for CP-violation at the LHC and as a possible explanation for the matter-antimatt...
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doaj-e5a14fc3dc88447d9dc0d53519e20bc22020-11-24T22:02:34ZengSpringerOpenJournal of High Energy Physics1029-84792018-02-012018214010.1007/JHEP02(2018)073The C2HDM revisitedDuarte Fontes0Margarete Mühlleitner1Jorge C. Romão2Rui Santos3João P. Silva4Jonas Wittbrodt5Departamento de Física and CFTP, Instituto Superior Técnico, Universidade de LisboaInstitute for Theoretical Physics, Karlsruhe Institute of TechnologyDepartamento de Física and CFTP, Instituto Superior Técnico, Universidade de LisboaISEL — Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de LisboaDepartamento de Física and CFTP, Instituto Superior Técnico, Universidade de LisboaInstitute for Theoretical Physics, Karlsruhe Institute of TechnologyAbstract The complex two-Higgs doublet model is one of the simplest ways to extend the scalar sector of the Standard Model to include a new source of CP-violation. The model has been used as a benchmark model to search for CP-violation at the LHC and as a possible explanation for the matter-antimatter asymmetry of the Universe. In this work, we re-analyse in full detail the softly broken ℤ 2 symmetric complex two-Higgs doublet model (C2HDM). We provide the code C2HDM_HDECAY implementing the C2HDM in the well-known HDECAY program which calculates the decay widths including the state-of-the-art higher order QCD corrections and the relevant off-shell decays. Using C2HDM_HDECAY together with the most relevant theoretical and experimental constraints, including electric dipole moments (EDMs), we review the parameter space of the model and discuss its phenomenology. In particular, we find cases where large CP-odd couplings to fermions are still allowed and provide benchmark points for these scenarios. We examine the prospects of discovering CP-violation at the LHC and show how theoretically motivated measures of CP-violation correlate with observables.http://link.springer.com/article/10.1007/JHEP02(2018)073Beyond Standard ModelCP violationHiggs Physics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Duarte Fontes Margarete Mühlleitner Jorge C. Romão Rui Santos João P. Silva Jonas Wittbrodt |
spellingShingle |
Duarte Fontes Margarete Mühlleitner Jorge C. Romão Rui Santos João P. Silva Jonas Wittbrodt The C2HDM revisited Journal of High Energy Physics Beyond Standard Model CP violation Higgs Physics |
author_facet |
Duarte Fontes Margarete Mühlleitner Jorge C. Romão Rui Santos João P. Silva Jonas Wittbrodt |
author_sort |
Duarte Fontes |
title |
The C2HDM revisited |
title_short |
The C2HDM revisited |
title_full |
The C2HDM revisited |
title_fullStr |
The C2HDM revisited |
title_full_unstemmed |
The C2HDM revisited |
title_sort |
c2hdm revisited |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2018-02-01 |
description |
Abstract The complex two-Higgs doublet model is one of the simplest ways to extend the scalar sector of the Standard Model to include a new source of CP-violation. The model has been used as a benchmark model to search for CP-violation at the LHC and as a possible explanation for the matter-antimatter asymmetry of the Universe. In this work, we re-analyse in full detail the softly broken ℤ 2 symmetric complex two-Higgs doublet model (C2HDM). We provide the code C2HDM_HDECAY implementing the C2HDM in the well-known HDECAY program which calculates the decay widths including the state-of-the-art higher order QCD corrections and the relevant off-shell decays. Using C2HDM_HDECAY together with the most relevant theoretical and experimental constraints, including electric dipole moments (EDMs), we review the parameter space of the model and discuss its phenomenology. In particular, we find cases where large CP-odd couplings to fermions are still allowed and provide benchmark points for these scenarios. We examine the prospects of discovering CP-violation at the LHC and show how theoretically motivated measures of CP-violation correlate with observables. |
topic |
Beyond Standard Model CP violation Higgs Physics |
url |
http://link.springer.com/article/10.1007/JHEP02(2018)073 |
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