Physical constraints derived from FCNC in the 3-3-1-1 model

Abstract

We investigate several phenomena related to FCNCs in the $\text{3-3-1-1}$ model. The sources of FCNCs at the tree-level from both the gauge and Higgs sectors are clarified. Experiments on the oscillation of mesons most stringently constrain the tree-level FCNCs. The lower bound on the new physics scale is imposed more tightly than in the previous, ${\text{M}}_{\text{new}}>12$ \text{TeV}. Under this bound, the tree-level FCNCs make a negligible contribution to the $\text{Br}(B_s\to {\mu }^{+}{\mu }^{-})$, $\text{Br}(B\to K^{\ast }{\mu }^{+}{\mu }^{-})$ and $\text{Br}(B^{+}\to K^{+}{\mu }^{+}{\mu }^{-})$. The branching ratio of radiative decay $b\to s\gamma$ is enhanced by the ratio $\frac{v}{u}$ via diagrams with the charged Higgs mediation. In contrast, the charged currents of new gauge bosons significantly contribute to the decay process $\mu \to e\gamma$.

29 pages, 7 figures

References in corpus (8)

• Updated NNLO QCD predictions for the weak radiative B-meson decays
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• Current status of the Standard Model CKM fit and constraints on $\Delta F=2$ New Physics
• Branching Ratio Measurements of $B_s$ Decays
• Enhanced electromagnetic correction to the rare $B$-meson decay $B_{s,d}\to {\mu }^{+}{\mu }^{-}$
• The Anatomy of Quark Flavour Observables in 331 Models in the Flavour Precision Era
• Phenomenology of the 3-3-1-1 model
• Inflation and leptogenesis in the 3-3-1-1 model

Cited by in corpus (11)

• A renormalizable left-right symmetric model with low scale seesaw mechanisms
• Universal Inverse seesaw mechanism as a source of the SM fermion mass hierarchy
• Flavor Changing Neutral Current processes and family discrimination in 3-3-1 models
• Flavor Seesaw Mechanism
• Fermion masses and mixings and $g-2$ muon anomaly in a 3-3-1 model with $D_4$ family symmetry
• Bounds on quark mixing, $M_{Z^{\prime }}$ and $Z-Z^{\prime }$ mixing angle from flavor changing neutral processes in a 3-3-1 model
• New physics in $\text{b}\to \text{s}$ transitions in the MF331 model
• Rare Kaon Decay to Missing Energy: Implications of the NA62 Result for a $Z^{\prime }$ Model
• A model with vectorlike fermions and $U(1{)}_X$ symmetry: CKM unitarity, $b\to s$ transitions, and prospect at Belle II
• Phenomenological aspects of the fermion and scalar sectors of a $S_4$ flavored 3-3-1 model
• Fermion masses and mixings and charged lepton flavor violation in a 3-3-1 model with inverse seesaw