Recently, several indications of lepton non-universality observables have been perceived in semileptonic B meson decay processes, both in the neutral-current (b → sll) and charged-current (b → clν l ) transitions. Influenced by these fascinating quotients, we examine the semileptonic decays involving the b → clν l quark level transitions. We execute it through a model independent analysis in order to probe the nature of new physics. Taking into consideration the most general effective Hamiltonian, we scrutinize Λ b → Λ c τ ντ , B + c → η c τ + ν τ , and B → D * * τ ντ (where

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With the recent experimental hint of new physics from flavor physics anomalies, combined with the evidence from neutrino masses and dark matter, we consider a minimal extension of SM with a scalar leptoquark and a fermion triplet. The scalar leptoquark with couplings to leptons and quarks can explain lepton flavor non-universality observables RK, $$ {R}_{K^{\left(\ast \right)}} $$ R K ∗ , $$ {R}_{D^{\left(\ast \right)}} $$ R D ∗ and RJ/ψ. Neutral component of fermion triplet provides current abundance of dark matter in the Universe. The interesting feature of the proposal is that the minimal addition of these phenomenologically rich particles (scalar leptoquark and fermion triplet) assist in realizing the unification of the gauge couplings associated with the strong and electroweak forces of standard model when embedded in the non-supersymmetric SO(10) grand unified theory. We discuss on unification mass scale and the corresponding proton decay constraints while taking into account the GUT threshold corrections.

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