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CP Violation in Higgs-Gauge Interactions: From Tabletop Experiments to the LHC


Cirigliano, Vincenzo; Crivellin, Andreas; Dekens, Wouter; de Vries, Jordy; Hoferichter, Martin; Mereghetti, Emanuele (2019). CP Violation in Higgs-Gauge Interactions: From Tabletop Experiments to the LHC. Physical Review Letters, 123(5):051801.

Abstract

We investigate the interplay between the high- and low-energy phenomenology of CP-violating interactions of the Higgs boson with gauge bosons. For this purpose, we use an effective field theory approach and consider all dimension-six operators arising in so-called universal theories. We compute their loop-induced contributions to electric dipole moments and the CP asymmetry in B→Xsγ and compare the resulting current and prospective constraints to the projected sensitivity of the LHC. Low-energy measurements are shown to generally have a far stronger constraining power, which results in highly correlated allowed regions in coupling space—a distinctive pattern that could be probed at the high-luminosity LHC.

Abstract

We investigate the interplay between the high- and low-energy phenomenology of CP-violating interactions of the Higgs boson with gauge bosons. For this purpose, we use an effective field theory approach and consider all dimension-six operators arising in so-called universal theories. We compute their loop-induced contributions to electric dipole moments and the CP asymmetry in B→Xsγ and compare the resulting current and prospective constraints to the projected sensitivity of the LHC. Low-energy measurements are shown to generally have a far stronger constraining power, which results in highly correlated allowed regions in coupling space—a distinctive pattern that could be probed at the high-luminosity LHC.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > General Physics and Astronomy
Uncontrolled Keywords:General Physics and Astronomy
Language:English
Date:29 July 2019
Deposited On:12 Sep 2019 10:14
Last Modified:29 Jul 2020 11:19
Publisher:American Physical Society
ISSN:0031-9007
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1103/physrevlett.123.051801
Project Information:
  • : FunderSNSF
  • : Grant IDPP00P2_176884
  • : Project TitleB Meson Decays and Lepton Flavour Universality Violation

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