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Exploring $B \to ω μ^{+} μ^{-}$ decay with $Z^{'}$ boson

Department of Physics, National Institute of Technology Durgapur Durgapur-713209, West Bengal, India

^*Contact author: manosheemandal@gmail.com
^†Contact author: sukadevsahoo@yahoo.com

Phys. Rev. D 113, 115005 – Published 2 June, 2026

DOI: https://doi.org/10.1103/brtr-td9f

Abstract

Rare decays of $B$ mesons play a crucial role in understanding and exploring the intricacies of physics beyond the standard model. Various experimental results as well as theoretical investigations involving rare $B$ meson decays have motivated us to investigate the rare decay, $B \to ω μ^{+} μ^{-}$ , proceeding through the quark transition $b \to d ℓ^{+} ℓ^{-}$ in standard model and nonuniversal $Z^{'}$ model. We have incorporated the new physics (NP) couplings of the $Z^{'}$ boson with quarks from $B_{d} - \bar{B_{d}}$ mixing. We have estimated the NP leptonic couplings from the experimental values of branching fractions of other $b \to d ℓ^{+} ℓ^{-}$ decays. With these NP couplings, we have estimated the branching ratio, forward-backward asymmetry, and lepton polarization asymmetries. We have observed significant deviation from standard model predictions, especially for the branching fraction and forward-backward asymmetry.

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References (75)

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Exploring $B \to ω μ^{+} μ^{-}$ decay with $Z^{'}$ boson

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Exploring B→ωμ+μ− decay with Z′ boson

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Exploring $B \to ω μ^{+} μ^{-}$ decay with $Z^{'}$ boson