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.

5 pages, final version to appear in PRL

References in corpus (3)

• A custodial symmetry for Zbb
• Collider Signals of Top Quark Flavor Violation from a Warped Extra Dimension
• A New Custodian for a Realistic Higgsless Model

Cited by in corpus (8)

• Flavor Violation Tests of Warped/Composite SM in the Two-Site Approach
• LHC Signals for Warped Electroweak Charged Gauge Bosons
• Collider aspects of flavour physics at high Q
• Probing RS scenarios of flavour at LHC via leptonic channels
• Single Top Production as a Probe of Heavy Resonances
• 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