Exclusive (Lambda_b -> Lambda l^+ l^-) decay beyond standard model

Abstract

Using the most general, model independent form of the effective Hamiltonian, the exclusive, rare baryonic (Lambda_b -> Lambda l^+ l^- ~l=μ,τ) decay is analyzed. We study sensitivity of the branching ratio and lepton forward-backward asymmetry to the new Wilson coefficients. Is is shown that these physical quantities are quite sensitive to the new Wilson coefficients. Determination of the position of zero value of the forward-backward asymmetry can serve as a useful tool for establishing new physics beyond the standard model, as well as fixing the sign of the new Wilson coefficients.

21 pages, 16 figures, LaTeX formatted

References in corpus (8)

• Baryonic Rare Decays of ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$
• Probing for New Physics in Polarized ${\Lambda }_b$ decays at the Z
• Lepton Asymmetries in Heavy Baryon Decays of ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$
• Rare ${\Lambda }_b\to \Lambda$ l${}^{+}$ l${}^{-}$ Decays with Polarized $\Lambda$
• New physics effects to the lepton polarizations in the B -> K l^+ l^- decay
• Exclusive B -> K^* l^+ l^- decay with polarized K^* and new physics effects
• Study of ${\Lambda }_b\to \Lambda \nu \bar{\nu }$ with Polarized Baryons
• Rare B -> K^* (nu) bar(nu) decay beyond standard model

Cited by in corpus (32)

• Analysis of $Λ_b \rar Λ\ell^+ \ell^-$ transition in SM4 using form factors from Full QCD
• B, D and K decays
• Analysis of the $Λ_{b}\rar Λ\ell^+\ell^- $ decay in QCD
• Rare Decays of Λ_b->Λ+ γand Λ_b ->Λ+ l^{+} l^{-} in the Light-cone Sum Rules
• Exclusive semileptonic decays of ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in supersymmetric theories
• ${\Lambda }_b$ Decays into $\Lambda$-Vector
• Model independent analysis of 'Lambda' baryon polarizations in (Lambda_b -> Lambda l^+ l^-) decay
• (Lambda_b -> Lambda l^+ l^-) decay in universal extra dimensions
• Study of FCNC mediated Z boson effect in the semileptonic rare baryonic decays ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$
• Rare decays of ${\Lambda }_b\to \Lambda \gamma$ and ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in universal extra dimension model
• Double-lepton polarization asymmetries in (Lambda_b -> Lambda l^+ l^-) decay in universal extra dimension model
• Effects of scalar leptoquark on semileptonic ${\Lambda }_b$ decays
• Polarization effects in exclusive semileptonic (Lambda_b -> Lambda l^+ l^-) decay
• The Effects of Fourth Generation on the Total Branching Ratio and the Lepton Polarization in $Λ_b \rar Λ\ell^+ \ell^-$ decay
• Double Lepton Polarization in ${\Lambda }_b-->\Lambda l^{+}{l}^{-}$ Decay in the Standard Model with Fourth Generations Scenario
• Forward-backward asymmetries in (Lambda_b -> Lambda l^+ l^-) decay beyond the standard model
• Model-independent calculation of $SU(3{)}_f$ violation in baryon octet light-cone distribution amplitudes
• Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay
• Investigation of the ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ transition in universal extra dimension using form factors from full QCD
• Effect of both Z and Z'-mediated flavor-changing neutral currents on the baryonic rare decay $lambd{a}_b$ decays into $lambda{l}^{+}{l}^{-}$
• Lepton polarization effects in "Lambda_b -> Lambda l+l-" decay in family non-universal Z' model
• Lambda_b -> Lambda l+ l- decay within family non-universal Z' model
• Fourth generation effect on ${\Lambda }_b$ decays
• Constraint on compactification scale via recently observed baryonic ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ channel and analysis of the ${\Sigma }_b\to \Sigma {\ell }^{+}{\ell }^{-}$ transition in SM and UED scenario
• Transition form factors and angular distributions of the ${\mathbf{\Lambda }}_{\mathbf{b}}\to \mathbf{\Lambda }(1520)(\to \mathbf{N}\bar{\mathbf{K}}){\mathbf{\ell }}^{+}{\mathbf{\ell }}^{-}$ decay supported by baryon spectroscopy
• Rare ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ decay in the Bethe-Salpeter equation approach
• Decay rate and asymmetries of ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$
• Rare ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ decay in the two-Higgs doublet model of type-III
• Analysis of Angular Observables of ${\Lambda }_b\to \Lambda (\to p\pi ){\mu }^{+}{\mu }^{-}$ Decay in Standard and $Z^{\prime }$ Models
• Study of DiMuon Rare Beauty Decays with ATLAS and CMS
• Forward-backward asymmetries in ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in Bethe-Salpeter equation approach
• Probing new physics effects in ${\Lambda }_b\to \Lambda (\to p{\pi }^{-}){\ell }^{+}{\ell }^{-}$ decay via model independent approach