A Signal for a Theory of Flavor at the LHC

Abstract

In Randall-Sundrum models with gauge bosons and fermions in the extra dimensional bulk, it is possible to build models of flavor by localizing the fermions in the extra dimension. Since the Higgs must be localized at or close to the TeV scale fixed point, heavier fermions must be localized close to this brane. The first Kaluza-Klein excitations of the gauge bosons are also TeV-localized, so they have stronger couplings to heavier fermions leading to tree-level flavor-violating couplings. We investigate the potential of the LHC to observe flavor violation in single top production at very high invariant masses, in addition to the observation of the corresponding top--anti-top resonance. We conclude that the LHC will be able to observe tree-level flavor violation in single top production, probing KK masses at least as large as 2 TeV, as well as a very interesting region of the parameters.

arXiv comment5 pages, final version to appear in PRL

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Cited by in corpus (16)

• Electroweak constraints on warped models with custodial symmetry
• Flavor Violation Tests of Warped/Composite SM in the Two-Site Approach
• Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron
• LHC Signals for Warped Electroweak Charged Gauge Bosons
• Collider aspects of flavour physics at high Q
• Relaxing Constraints from Lepton Flavor Violation in 5D Flavorful Theories
• Constraining the flavor changing Higgs couplings to the top-quark at the LHC
• Probing RS scenarios of flavour at LHC via leptonic channels
• Next-to-leading order QCD corrections to $tZ$ associated production via the flavor-changing neutral-current couplings at hadron colliders
• Next-to-leading order QCD corrections to the single top quark production via model-independent t-q-g flavor-changing neutral-current couplings at hadron colliders
• Single Top Production as a Probe of Heavy Resonances
• Next-to-leading order QCD corrections to the top quark associated with $\gamma$ production via model-independent flavor-changing neutral-current couplings at hadron colliders
• Boosted Top quark polarization
• Same-sign top pair production in an extra-dimension model of flavor at the CERN Large Hadron Collider
• Towards an hybrid compactification with a scalar-tensor global cosmic string
• Signature of same-sign top pair production mediated by a nonuniversal $Z^{\prime }$ with QCD next-to-leading accuracy at the LHC