General CP violation in minimal left–right symmetric model and constraints on the right-handed scale

By Yue Zhang, H. An, X. Ji, Rabindra N. Mohapatra Center for High-Energy Physics, Institute of Modern Physics, P. University, Beijing, China, M. C. F. F. Physics, D. Physics and 4 more. 2007

239 citations recorded by the source corpus.

Abstract In minimal left–right symmetric theories, the requirement of parity invariance allows only one complex phase in the Higgs potential and one in the Yukawa couplings, leading to a two-phase theory with both spontaneous and explicit CP violations. We present a systematic way to solve the right-handed quark mixing matrix analytically in this model and find that the leading order solution has the same hierarchical structure as the left-handed CKM matrix with one more CP-violating phase coming from the complex Higgs vev. Armed with this explicit right-handed mixing matrix, we explore its implications for flavor changing and conserving processes in detail, low-energy CP-violating observables in particular. We report an improved lower bound on the W R mass of 2.5 TeV from Δ M K and Δ M B , and a somewhat higher bound (4 TeV) from kaon decay parameters ϵ, ϵ ′ , and neutron electric dipole moment. The new bound on the flavor-changing neutral Higgs mass is 25 TeV.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7d58892f2227142e29cef46ddc37f4e8f2d9d543

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In Nuclear and High Energy Physics

1. Yi-Fu Cai
2. W. Rodejohann
3. J. Barry
4. R. Ruiz
5. T. Han
6. Goran Senjanovic
7. M. Ramsey-Musolf
8. Yue Zhang

Citations in the corpus

• Lepton number and flavour violation in TeV-scale left-right symmetric theories with large left-right mixing (2013, background): “come from an effective four fermion operator, as is the case in kaon mixing [11, 44, 101], with a factor of 1/2 coming from the Fierz transformation of a scalar to vector contribution (see Ref.”
• Warm dark matter in low scale left-right theory (2012, background): “5 – 4 TeV [36, 37, 43], depending on the choice of the LR symmetry, charge conjugation or parity, respectively.”
• Electric Dipole Moments of Nucleons, Nuclei, and Atoms: The Standard Model and Beyond (2013, background): “([28]) one obtains”
• Lepton Number Violation: Seesaw Models and Their Collider Tests (2017, methodology): “Present searches for neutron EDMs [125, 126, 142, 143] and FCNCs [143–147] require mFCNH > 10 − 20 TeV at 90% CL. Subsequently, in the absence of FCNC-suppressing mechanisms, ρi > 1 for LHC-scale WR.”
• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry (2014, methodology): “This means that ε does not lead to a bound onMWR but rather to a constraint on the phase θd− θs [20, 21].”