Constraint of B_{d,s}-bar{B}_{d,s} mixing on warped extra-dimension model

Abstract

Recent CDF measurement of the Bs-Bs oscillation frequency, at the Tevatron imposes significant constraint on various models for new physics. A warped extra-dimension model with custodial isospin symmetry accommodates the Bd-Bd mixing at tree level mainly through the Kaluza-Klein gluons. This is due to the misalignment between the bulk gauge eigenstates and the localized Yukawa eigenstates of the bulk fermions. We adopt the universal 5D Yukawa coupling model where all Yukawa couplings are of order one. The SM fermion mass spectra and mixings are controlled by the bulk Dirac mass parameters. With two versions of the hadronic parameter values, we investigate the implication of the observed BB mixings on this model. The CP-violating effects on the Bd system is shown to provide very strong constraint: The first Kaluza-Klein mass of a gluon has its lower bound about 3.7 TeV with 1 sigma uncertainty.

published version in JHEP, CP-violating effects included

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• Delta F=2 Observables and Fine-Tuning in a Warped Extra Dimension with Custodial Protection
• Anatomy of New Physics in B-Bbar mixing
• Flavor Violation Tests of Warped/Composite SM in the Two-Site Approach
• LHC Signals for Warped Electroweak Charged Gauge Bosons
• Unparticle physics effects in B_s mixing
• Phenomenology of a light gluon resonance in top-physics at Tevatron and LHC
• B_s^0 - \bar{B}_s^0 Mixing in Leptophobic Z^\prime Model
• Search for RS gravitons via $W_L{W}_L$ decays
• Unparticle effect on B_s - \bar B_s mixing and its implications for B_s \to J/ψϕ, ϕϕdecays
• Bulk flows in Virasoro minimal models with boundaries
• Relaxing Constraints from Lepton Flavor Violation in 5D Flavorful Theories
• Manifestations of Warped Extra Dimension in Rare Charm Decays and Asymmetries
• Implications of the measurements of B_s - B_s bar mixing on SUSY models
• $B_s^0-{\bar{B}}_s^0$ mixing and $b\to s$ transitions in isosinglet down quark model
• Correlation between lepton flavor violation and B_{(d,s)} - \bar{B}_{(d,s)} mixing in SUSY GUT
• Investigation of $B_{u,d}\to (\pi ,K)\pi$ decays within unparticle physics
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• Electroweak Penguin and Leptophobic $Z^{\prime }$ model