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Semileptonic Lambda(b)-->Lambda neutrino antineutrino decay in the Leptophobic Z-prime model
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We study the exclusive flavor chancing neutral current process Lambda(b)-->Lambda neutrino antineutrino in the leptophobic Z-prime model, where charged leptons do not couple to the extra Z-prime boson. The branching ratio, as well as, the longitudinal,transversal and normal polarizations are calculated. It has been shown that all these physical observables are very sensitive to the existence of new physics beyond the standard model and their experimental measurements can give valuable information about it.
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Cited by 3 Pith papers
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New Strategies for New Physics Search with $\Lambda_b \to \Lambda \nu \bar\nu$ Decays
For longitudinally polarized Lambda_b at future Z-pole machines, Lambda_b -> Lambda nu nubar has a forward-backward asymmetry that is independent of new physics at its zero crossing and complements the branching ratio...
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Semileptonic neutral current decays of $\Xi_b$ with dileptons or dineutrinos in the final state
Perturbative QCD calculations find that branching fractions for Ξ_b to Ξ lepton-pair decays lie within LHCb reach and that angular observables plus a specific ratio can constrain Wilson coefficients and extract |V_td/...
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$\Lambda_b \to \Lambda^{(\ast)}\nu\bar{\nu}$ decays and the recent Belle-II $B^+\to K^+\nu\bar{\nu}$ data
Belle-II's B+ -> K+ nu nubar excess, if due to new physics, constrains the branching ratios and angular observables of Lambda_b -> Lambda(*) nu nubar decays, with the hadronic forward-backward asymmetry the best discr...
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