The Effects of Fourth Generation on the double Lepton Polarization in B \rar K \ell^+ \ell^- decay

Abstract

This study investigates the influence of the fourth generation quarks on the double lepton polarizations in B \rar K \ell^+ \ell^- decay. Taking |V_{t's}V_{t'b}|\sim \{0.01-0.03\} with phase about 100^\circ, which is consistent with the b\to s\ell^+\ell^- rate and the B_s mixing parameter Delta m_{B_s}$, we obtain that the double lepton(muon and tau) polarizations are quite sensitive to the existence of fourth generation. It can serve as a good tool to search for new physics effects, precisely, to indirect search for the fourth generation quarks(t', b').

arXiv comment30 pages, 27 figures

References in corpus (35)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• Effective Hamiltonian for $B \ra X_s e^+ e^-$ Beyond Leading Logarithms in the NDR and HV Schemes
• Photonic penguins at two loops and m_t-dependence of BR[ B -> X_s l^+ l^-]
• Four Generations and Higgs Physics
• Quarks and Leptons Beyond the Third Generation
• B->pi and B->K Transitions from QCD Sum Rules on the Light-Cone
• Lepton Polarization in the Decays $B\to X_s{\mu }^{+}{\mu }^{-}$ and $B\to X_s{\tau }^{+}{\tau }^{-}$
• Two-loop virtual corrections to B --> X_s l^+ l^- in the standard model
• Tau Polarization Asymmetry in $B\to X_s{\tau }^{+}{\tau }^{-}$
• Improved Analysis of B->pi e nu from QCD Sum Rules on the Light-Cone
• Invisible Higgs Boson Decay into Massive Neutrinos of 4th Generation
• Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation
• A Systematic Analysis of the Lepton Polarization Asymmetries in the Rare B Decay, B -> X_sτ^+τ^-
• Fourth Generation CP Violation Effect on B -> K pi, phi K and rho K in NLO PQCD
• Lepton Asymmetries in Heavy Baryon Decays of ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$
• Effect of Fourth Generation CP Phase on b\to s Transitions
• A search for resonance decays to lepton+jet at HERA and limits on leptoquarks
• Light cone QCD sum rule analysis of B -> K l(+) l(-) decay
• A measurement of the tau mass and the first CPT test with tau leptons
• Double-lepton polarization asymmetries in the (B -> K l^+ l^-) decay beyond the Standard Model
• Search for a Fourth Generation Charge -1/3 Quark via Flavor Changing Neutral Current Decay
• The Effects of Fourth Generation on the Total Branching Ratio and the Lepton Polarization in $Λ_b \rar Λ\ell^+ \ell^-$ decay
• Fourth generation effects in processes induced by "b -> s" transition
• The $B\to X_s{l}^{+}{l}^{-}$ and $B\to X_s\gamma$ decays with the fourth generation
• Double Lepton Polarization in ${\Lambda }_b-->\Lambda l^{+}{l}^{-}$ Decay in the Standard Model with Fourth Generations Scenario
• Fourth generation effects in rare (B_s -> l^+ l^-) and (B_s -> l^+ l^- gamma) decays
• Double-lepton polarization asymmetries in the Exclusive (B -> rho l^+ l^-) decay beyond the Standard Model
• Exclusive (B -> rho l^+ l^-) decay and Polarized lepton pair forward--backward asymmetries
• Polarized forward-backward asymmetries of leptons in (B_s -> l^+ l^- gamma) decay
• Lepton Polarization Asymmetry in B\to\ell^{+}\ell^{-} decay Beyond the Standard Model
• General analysis of CP violation in polarized (b -> d l^+ l^-) decay
• Double Lepton Polarization Forward--Backward Asymmetries in B \rar K^\ast \ell^+ \ell^- Decay in the SM4
• Why the Four SM Families

Cited by in corpus (5)

• Semileptonic Transition of $Σ_b \rar Σμ^+ μ^-$ in Family Non-universal $Z^{\prime }$ Model
• Double-Lepton Polarization Asymmetries and Branching Ratio in $B \rar K_{0}^{*}(1430) l^+ l^- $ transition from Universal Extra Dimension Model
• Systematic analysis of the $B_s\to f_0{\ell }^{+}{\ell }^{-}$ in the universal extra dimension
• Double-Lepton Polarization Asymmetries in $B_s \rar ϕ\ell^+ \ell^-$ Decay in the Fourth-Generation Standard Model
• Analysis of Forward-Backward and Lepton Polarization Asymmetries in $B\to K_1{\ell }^{+}{\ell }^{-}$ Decays in the Two-Higgs-doublet Model