Non-Custodial Warped Extra Dimensions at the LHC?

Abstract

With the prospect of improved Higgs measurements at the LHC and at proposed future colliders such as ILC, CLIC and TLEP we study the non-custodial Randall-Sundrum model with bulk SM fields and compare brane and bulk Higgs scenarios. The latter bear resemblance to the well studied type III two-Higgs-doublet models. We compute the electroweak precision observables and argue that incalculable contributions to these, in the form of higher dimensional operators, could have an impact on the T-parameter. This could potentially reduce the bound on the lowest Kaluza-Klein gauge boson masses to the 5 TeV range, making them detectable at the LHC. In a second part, we compute the misalignment between fermion masses and Yukawa couplings caused by vector-like Kaluza-Klein fermions in this setup. The misalignment of the top Yukawa can easily reach 10%, making it observable at the high-luminosity LHC. Corrections to the bottom and tau Yukawa couplings can be at the percent level and detectable at ILC, CLIC or TLEP.

24 pages, 4 figures; v2: Typo in eq.48 fixed, references added

References in corpus (13)

• Flavor Physics in the Randall-Sundrum Model: I. Theoretical Setup and Electroweak Precision Tests
• Higgs Mediated FCNC's in Warped Extra Dimensions
• Electroweak Breaking on a Soft Wall
• The Custodial Randall-Sundrum Model: From Precision Tests to Higgs Physics
• The Gaugephobic Higgs
• Warped Supersymmetry Breaking
• Warped Electroweak Breaking Without Custodial Symmetry
• Suppressing Electroweak Precision Observables in 5D Warped Models
• TASI Lectures on a Holographic View of Beyond the Standard Model Physics
• Anomalous gauge couplings from composite Higgs and warped extra dimensions
• Higgs Production and Decay in Models of a Warped Extra Dimension with a Bulk Higgs
• Non-Custodial Warped Extra Dimensions at the LHC?
• Muon anomalous magnetic moment and penguin loops in warped extra dimensions

Cited by in corpus (13)

• Implications of the absence of high-mass radion signals
• Nonstandard Yukawa Couplings and Higgs Portal Dark Matter
• KK Gravitons at LHC2
• A novel Randall-Sundrum model with $S_3$ flavor symmetry
• Non-Custodial Warped Extra Dimensions at the LHC?
• Exploring holographic Composite Higgs models
• Bulk RS models, Electroweak Precision tests and the 125 GeV Higgs
• Scalar Production in Association with a Z Boson at LHC and ILC: the Mixed Higgs-Radion Case of Warped Models
• Diphoton resonance at e+e- and photon colliders
• Diboson resonances within a custodially protected warped extra-dimensional scenario
• Higgs boson production and decay in 5D warped models
• New Physics Search in the Doubly Weak Decay ${\overline{B}}^0\to K^{+}{\pi }^{-}$
• Higgs dark matter from a warped extra dimension