CP violation in charged Higgs production and decays in the Complex Two Higgs Doublet Model

Autor(en)

Abdesslam Arhrib, Ekaterina Christova, Helmut Eberl, Elena Ginina

Abstrakt

We study the effects of CP violation in charged Higgs boson production pp -> tH(+/-) + X at the LHC, as well as in the charged Higgs boson decays H-+/- -> tb and H-+/- -> W-+/- H-i(0), i = 1, 2, 3. The study is done in the framework of the type II complex Two Higgs Doublet Model (2HDM) with softly broken Z(2) symmetry. In this model violation of CP invariance is induced by the complex parameter m(12)(2) of the tree-level Higgs potential. We calculate the CP violating rate asymmetries for H+ and H- production and decays as well as for the combined processes at one-loop level and perform a detailed numerical analysis. All calculations are done with the automatic amplitude generator FeynArts and the calculational tool FormCalc, for which we have written a complete complex 2HDM model file and relevant fortran drivers. The implementation of the complex 2HDM in FeynArts and FormCalc is described. In comparison with the analogous results in the MSSM, all considered CP violating asymmetries are smaller by an order of magnitude and do not exceed 2 divided by 3%.

Organisation(en)

Teilchenphysik

Externe Organisation(en)

Université Abdelmalek Essaadi, Bulgarian Academy of Sciences (BAS), Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Journal of High Energy Physics

Band

2011

Anzahl der Seiten

35

ISSN

1029-8479

DOI

https://doi.org/10.1007/JHEP04(2011)089

Publikationsdatum

2011

Peer-reviewed

Ja

ÖFOS 2012

103034 Teilchenphysik

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/cp-violation-in-charged-higgs-production-and-decays-in-the-complex-two-higgs-doublet-model(cf68b625-7766-4081-8346-fc1f69468355).html