The Bounds on Lorentz and CPT Violating Parameters in the Higgs Sector

Details The Bounds on Lorentz and CPT Violating Parameters in the Higgs Sector The Bounds on Lorentz and CPT Violating Parameters in the Higgs Sector

2004-09-03

arxiv.org/abs/hep-ph/0409044v1

Int.J.Mod.Phys. A19 (2004) 5395-5402

Physics

High Energy Physics

High Energy Physics - Phenomenology

Plenary talk at 3rd Meeting on CPT and Lorentz Symmetry (CPT 04), Bloomington, Indiana, 4-7 Aug 2004. Also presented at 26th A

Scientific paper

10.1142/S0217751X04022633

In this talk, I discuss possible bounds on the Lorentz and CPT violating parameters in the Higgs sector of the so called minimal standard model extension. The main motivation to this study is coming from the fact that unlike the parameters in the fermion and gauge sector, there are no published bounds on the parameters in the Higgs sector. From the one-loop contributions to the photon propagator the bounds on the CPT-even asymmetric coefficients are obtained and the c_\mu\nu coefficients in the fermion sector determine the bound on the CPT-even symmetric coefficients. The CPT-odd coefficient is bounded from the non-zero vacuum expectation value of the Z-boson.

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