Journal Article

PUBDB-2022-04194

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Constraining the ${\mathcal {C}}{\mathcal {P}}$ structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis

Bahl, H. (Corresponding author)DESY* ; Fuchs, E.DESY* ; Heinemeyer, S. ; Katzy, J. ; Menen, M. ; Peters, K.DESY* ; Saimpert, M. ; Weiglein, G.DESY*

2022
Springer Heidelberg

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Please use a persistent id in citations: doi:10.1140/epjc/s10052-022-10528-1  doi:10.3204/PUBDB-2022-04194

Report No.: CERN-TH-2021-231; DESY-22-033; EFI-22-1; IFT-UAM/CSIC-21-148; arXiv:2202.11753

Abstract: ${\mathcal {C}}{\mathcal {P}}$ violation in the Higgs couplings to fermions is an intriguing, but not yet extensively explored possibility. We use inclusive and differential LHC Higgs boson measurements to fit the ${\mathcal {C}}{\mathcal {P}}$ structure of the Higgs Yukawa couplings. Starting with simple effective models featuring ${\mathcal {C}}{\mathcal {P}}$ violation in a single Higgs–fermion coupling, we probe well-motivated models with up to nine free parameters. We also investigate the complementarity of LHC constraints with the electron electric dipole moment bound, taking into account the possibility of a modified electron Yukawa coupling, and assess to which extent ${\mathcal {C}}{\mathcal {P}}$ violation in the Higgs–fermion couplings can contribute to the observed baryon asymmetry of the universe. Even after including the recent analysis of angular correlations in $H\rightarrow \tau ^+\tau ^-$ decays, we find that a complex tau Yukawa coupling alone may be able to account for the observed baryon asymmetry, but with large uncertainties in the baryogenesis calculation. A combination of complex top and bottom quark Yukawa couplings yields a result four times larger than the sum of their separate contributions, but remains insufficient to account for the observed baryon asymmetry.

Keyword(s): coupling: Yukawa ; CP: violation ; baryon: asymmetry ; electron: electric moment ; coupling: Higgs ; interpretation of experiments: CERN LHC Coll ; baryogenesis ; structure ; angular correlation ; quark ; Higgs particle

Note: 40 pages + references, 18 figures

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project 390833306 - EXC 2121: Quantum Universe (390833306) (390833306)
3. DFG project 390837967 - EXC 2123: QuantumFrontiers - Licht und Materie an der Quantengrenze (390837967) (390837967)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2022

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Bahl, H.DESY* ; Fuchs, E. (Corresponding author)Extern* ; Heinemeyer, S.Extern* ; Katzy, J.DESY* ; Menen ; Peters, K.DESY* ; Saimpert, M.Extern* ; Weiglein, G.DESY*
Constraining the $\mathcal{CP}$ structure of Higgs-fermion couplings with a global LHC fit, EDM and baryogenesis
[10.3204/PUBDB-2022-01290]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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