Scrutinizing new physics of B d → ϕ(η (′), π, ω) decay modes

Abstract

Abstract We inspect the exclusive hadronic decay modes B d → ϕ(η (′), π, ω), induced by quark-level transitions such as b → d (ΔS = 0) in the vector-like down quark model. These decay modes exhibit high levels of suppression followed by the predicted branching fraction O ( 1 0 − 9 ) which leads us to scrutinize physics beyond the standard model. We constrain the new parameter space inferred from experimental limits to the leptonic B d → ℓℓ(ℓ = e, μ, τ) and nonleptonic decay modes B d → η′π 0 and B u → ρ − η′. We then check that the new physics contributions have a significant impact on the clearly observed so-called branching ratio of the B d → ϕ(η (′), π, ω) processes.