Generation nonuniversality and flavor-changing neutral currents in the SU(3)c×SU(3)L×U(1)Xmodel
نویسندگان
چکیده
منابع مشابه
Flavor Changing Neutral Currents
A study of Rb and Rc is presented in the context of a Two Higgs Doublet Model (2HDM) with flavor changing scalar currents (FCSC). Implications of the model for the ρ-parameter and for b → sγ are also considered. The experimental data on Rb places stringent constraints on the model parameters. The configuration of the model needed to account for Rb is found to be irreconcilable with constraints ...
متن کاملFlavor Changing Neutral Currents and the Third Family
We consider a Two Higgs Doublet Model with Flavor Changing Scalar Neutral Currents arising at the tree level. All the most important constraints are taken into account and the compatibility with the present Electroweak measurements is examined. The Flavor Changing couplings involving the third family are not constrained to be very small and this allows us to predict some interesting signals of ...
متن کاملThe Z → bb decay asymmetry and flavor changing neutral currents
The measured value of Ab, the Zbb asymmetry parameter, disagrees with the Standard Model at 99% confidence level. If genuine the discrepancy could indicate new interactions unique to third generation quarks, implying enhanced Z penguin amplitudes. Enhanced rates are predicted for rare K and B decays, such as K → πνν, KL → π νν, B → Xsνν, and Bs → μμ. Measurements of ǫ /ǫ then imply QCD penguin ...
متن کاملGeneration non - universality and flavor changing neutral currents in the 331 model
The 331 model, an extension of the standard electroweak theory to SU(3)L× U(1)X , naturally predicts three families of quarks and leptons via the requirement of anomaly cancellation. This is accomplished by making one of the quark families transform differently from the other two, thus leading to flavor changing neutral currents. Using experimental input on neutral meson mixing, we show that th...
متن کاملSUSY Higgs boson flavor-changing neutral currents at the LHC
UAB-FT-597, UB-ECM-PF-06/03, hep-ph/0601191 We compute and analyze the Flavor-Changing Neutral Current (FCNC) interactions of Minimal Supersymmetric Standard Model Higgs bosons (h ≡ h, H, A) with heavy quarks (top and bottom), focusing on the strongly-interacting sector. We correlate the Higgs bosons production cross-section at the LHC with the FCNC decay branching ratios and find the maximum a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 1994
ISSN: 0556-2821
DOI: 10.1103/physrevd.50.542