CP violation from spin-1 resonances in a left-right dynamical Higgs context

Abstract

New physics field content in the nature, more specifically, from spin-1 resonances sourced by the extension of the SM local gauge symmetry to the larger local group $SU(2{)}_L\otimes SU(2{)}_R\otimes U(1{)}_{B-L}$, may induce CP-violation signalling NP effects from higher energy regimes. In this work we completely list and study all the CP-violating operators up to the $p^4$-order in the Lagrangian expansion, for a non-linear left-right electroweak chiral context and coupled to a light dynamical Higgs. Heavy right handed fields can be integrated out from the physical spectrum, inducing thus a physical impact in the effective gauge couplings, fermionic electric dipole moment, and CP-violation in the decay $h\to Z{Z}^{\ast }\to 4l$ that are briefly analysed. The final relevant set of effective operators have also been identified at low energies.

Comments: 12 pages, typos corrected, short section added, conclusions complemented. arXiv admin note: substantial text overlap with arXiv:1507.03974