Prospects and Constraints for Vector-like MFV Matter at LHC

Abstract

We examine the prospects for LHC discovery of SU(2)_L singlet vector-like quarks that obey Minimal Flavour Violation (MFV) and are consistent with lower energy phenomenology. We study models where the vector-like quarks have the same quantum numbers as u_R or d_R, allowing mixing, which generally leads to significant low energy constraints. We find that there are two naturally phenomenologically viable MFV models of this type when the Weyl spinor components of the vector-like quarks are flavour triplets. We examine direct production bounds, flavour and electroweak precision data constraints for these models and determine the cross section for allowed values of the model parameters at LHC. For the models we identify as naturally phenomenologically viable, large amounts of parameter space afford a significant early discovery reach at LHC while being consistent with lower energy phenomenology.

26 pages, 4 figures; v2: published in JHEP

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• Collider and Dark Matter Searches in the Inert Doublet Model from Peccei-Quinn Symmetry
• Pair Production of Color-Octet Scalars at the LHC
• On the non-minimal character of the SMEFT
• Bs Mixing and Electric Dipole Moments in MFV
• Consequences of vector-like quarks of Nelson-Barr type
• MFV Reductions of MSSM Parameter Space
• Phenomenological Aspects of R-parity Violating Supersymmetry with A Vector-like Extra Generation
• Towards a new paradigm for quark-lepton unification