Electric dipole moment constraints on CP-violating light-quark Yukawas

Brod, Joachim; Skodras, Dimitrios

doi:10.1007/jhep01(2019)233

Cited by 30 publications

(33 citation statements)

References 63 publications

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“…The estimated sensitivities for the CP-violating phases, α τ of the τ Yukawa coupling andc zz extracted from CP-sensitive variables are collected in Table 14. Before concluding this section, we recall that CP-violating Yukawa couplings are well constrained from bounds on the electric dipole moments (EDMs) [76][77][78][79][80][81] under the assumptions of i) no cancellation with other contributions to EDMs, ii) SM values for the CP-even part of the Yukawa couplings.…”

Section: /58mentioning

confidence: 99%

Higgs Boson studies at future particle colliders

Blas

Cepeda

D’Hondt

et al. 2020

J. High Energ. Phys.

305

353

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This document aims to provide an assessment of the potential of future colliding beam facilities to perform Higgs boson studies. The analysis builds on the submissions made by the proponents of future colliders to the European Strategy Update process, and takes as its point of departure the results expected at the completion of the HL-LHC program. This report presents quantitative results on many aspects of Higgs physics for future collider projects using uniform methodologies for all proposed machine projects of sufficient maturity. This report is still preliminary and is distributed for the purposes of discussion at the Open Symposium in Granada (13-16/05/2019). 2/583/58 9/58 10/58 15/58 16 In fact, the width and the branching ratio to undetected final states are not independent observables. In the analysis presented in Section 3.2 we opted to fit BR unt and calculate Γ H from Eq. (4).

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Section: /58mentioning

confidence: 99%

Higgs Boson studies at future particle colliders

Blas

Cepeda

D’Hondt

et al. 2020

J. High Energ. Phys.

305

353

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“…A more recent NLO calculation is presented in Ref. [91]. We report the relevant anomalous dimension matrix in Appendix C in our normalization.…”

Section: B Effective Operatorsmentioning

confidence: 99%

“…The mixing of O qq into the dipoles is readily obtained from Ref. [91], taking into account the different operator basis and the covariant derivative conventions (C5)…”

Section: (C4)mentioning

confidence: 99%

Kaon CP violation and neutron EDM in the minimal left-right symmetric model

2020

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Within the minimal Left-Right (LR) symmetric model we revisit the predictions for the kaon CP violating observables ε and ε in correlation with the neutron electric dipole moment. We perform a complete study of the cross constraints on the model parameters, phases and the MW R scale, considering the two cases of extended parity or charge conjugation as LR discrete symmetries, together with the possible presence of a Peccei-Quinn symmetry. We discuss in particular two scenarios: whether the Standard Model saturates the experimental value of ε /ε or whether new physics is needed, still an open issue after the recent lattice results on the QCD penguin matrix elements. Within the first scenario, we find no constraints on the LR scale in the charge-conjugation case while in the parity case we show that MW R can be as low as 13 TeV. On the other side, the request that new physics contributes dominantly to ε implies strong correlations among the model parameters, with an upper bound of MW R < 8-100 TeV depending on tan β in the case of charge conjugation and a range of MW R 7-45 TeV in the parity setup. Both scenarios may be probed directly at future colliders and only indirectly at the LHC. * stefano.bertolini@sissa.it † Alessio.Maiezza@irb.hr ‡ fabrizio.nesti@aquila.infn.it Right (LR) symmetric theories, based on the gauge groupA particular role is played by the minimal version of the Left-Right symmetric models (LRSM) [9]. Besides being predictive, the model provides a natural rationale for the origin and smallness of the neutrino mass [10,11], a setup for the restoration of parity at high scale [12], and a novel source for neutrinoless double-beta decay [13,14]. The LRSM has aroused a renewed interest in the era of LHC, because of the possibility of a direct detection via the Keung-Senjanovic (KS) process [15], which violates lepton number in full analogy with the low energy neutrinoless double-beta decay.

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“…In models such as the extended Higgs models [26][27][28], supersymmetric models with large tan β [4,29,30], R-parity violation [31][32][33][34] or with heavy sfermions (split-supersymetry) [35], the two-loop level Barr-Zee type diagram [see Fig. 1 (b)] yields the leading contribution to the nuclear EDM.…”

Section: Prospects For New Physicsmentioning

confidence: 99%