# Standard model with four generations: Selected implications for rare B and K decays

@article{Soni2010StandardMW,
title={Standard model with four generations: Selected implications for rare B and K decays},
author={A. Soni and A. Alok and A. Giri and R. Mohanta and S. Nandi},
journal={Physical Review D},
year={2010},
volume={82},
pages={033009}
}
We extend our recent work and study implications of the standard model with four generations (SM4) for rare B and K decays. We again take seriously the several 2-3{sigma} anomalies seen in B, B{sub s} decays and interpret them in the context of this simple extension of the SM. SM4 is also of course of considerable interest for its potential relevance to dynamical electroweak symmetry breaking and to baryogenesis. Using experimental information from processes such as B{yields}X{sub s}{gamma}, B… Expand

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#### References

SHOWING 1-10 OF 207 REFERENCES
Direct CP violation in radiative b decays in and beyond the standard model
• Physics
• 2000
We consider the partial rate asymmetry in the inclusive decay modes b{yields}s{gamma} and b{yields}d{gamma}, concentrating on non-standard models with new charged Higgs interactions. We find that theExpand
Effects of final-state interactions on mixing-induced CP violation in penguin-dominated B decays
• Physics
• 2005
Motivated by the recent indications of the possibility of sizable deviations of the mixing-induced CP violation parameter, S{sub f}, in the penguin-dominated b{yields}sqq transition decays such asExpand
Final state interactions in hadronic B decays
• Physics
• 2005
There exist many experimental indications that final-state interactions (FSIs) may play a prominent role not only in charmful B decays but also in charmless B ones. We examine the final-stateExpand
Analysis of Br(anti-B ---> X(s gamma)) at NNLO with a cut on photon energy
• Physics
• 2007
By combining a recent estimate of the total {bar B} {yields} X{sub s}{gamma} branching fraction at O({alpha}{sub s}{sup 2}) with a detailed analysis of the effects of a cut E{sub {gamma}} {ge} 1.6Expand
Neutral B Meson Mixing in Unquenched Lattice QCD
• Physics
• 2009
We study B{sub d} and B{sub s} mixing in unquenched lattice QCD employing the MILC Collaboration gauge configurations that include u, d, and s sea quarks based on the improved staggered quarkExpand
Implications of the CP asymmetry in semileptonic B decay
• Physics
• 2002
Recent experimental searches for ${A}_{\mathrm{SL}},$ the $\mathrm{CP}$ asymmetry in semileptonic B decay, have reached an accuracy of the order of one percent. Consequently, they give meaningfulExpand
Flavor Structure of Warped Extra Dimension Models
• Physics
• 2005
We recently showed, in hep-ph/0406101, that warped extra dimensional models with bulk custodial symmetry and few TeV KK masses lead to striking signals at B-factories. In this paper, using a spurionExpand
Dynamical electroweak symmetry breaking with superheavy quarks and 2+1 composite Higgs model
• Physics
• 2010
Recently, a new class of models describing the quark mass hierarchy has been introduced. In this class, while the t quark plays a minor role in electroweak symmetry breaking, it is crucial inExpand
Experimental constraints on fourth generation quark masses
• Physics
• 2008
The existing bounds from CDF on the masses of the fourth generation quarks, t{sup '} and b{sup '}, are reexamined. The bound of 256 GeV on the t{sup '} mass assumes that the primary decay of theExpand
Four generations, the electroweak phase transition, and supersymmetry
• Physics
• 2008
We calculate the strength of the electroweak phase transition in a supersymmetric model with four chiral generations. The additional chiral fermions (and scalar partners) lower the criticalExpand