Effect of both Z and Z'-mediated flavor-changing neutral currents on the baryonic rare decay $lambd{a}_b$ decays into $lambda{l}^{+}{l}^{-}$

Abstract

We study the effect of both Z and Z'-mediated flavor-changing neutral currents (FCNCs) on the $lambd{a}_{b}arrowlambda{l}^{+}{l}^{-}(l=mu,tau)$ rare decay. We find the branching ratio is reasonably enhanced from its standard model value due to the effect of both Z and Z'-mediated FCNCs, and gives the possibility of new physics beyond the standard model. The contribution of Z'-boson depends upon the precise value of the mass of Z' boson.

14 pages

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Cited by in corpus (9)

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• Imprints of CP violation asymmetries in rare ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ decay in family non-universal $Z^{\prime }$ model
• Rare baryonic decays ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in the TTM model
• Effect of both Z and Z^prime - mediated flavor-changing neutral currents on $B_s$ decays into $ta{u}^{+}ta{u}^{-}$
• Effects of neutral $Z^{\prime }$ boson in $B_s\to \varphi {\ell }^{+}{\ell }^{-}$ decay with polarized $\varphi$ and the unpolarized and polarized $CP$ violation asymmetry
• Analysis of Angular Observables of ${\Lambda }_b\to \Lambda (\to p\pi ){\mu }^{+}{\mu }^{-}$ Decay in Standard and $Z^{\prime }$ Models