Resonance contributions in $B^-\to K^+K^-π^-$ within the light-come sum rule approach

In this work, we study the resonance contributions to the decay $B^-\to K^+K^-π^-$, which is dominated by the scalar $f_0(980), K_0^*(1430)$, vector $ρ(1450), ϕ(1020), K^*(892)$ and tensor $f_2(1270)$ resonances. The three-body decay is reduced to various quasi two-body decays, where the $B$ meson firstly decays into a resonance and a pion or a kaon, subsequently the resonance decays into the other two final-state mesons. The quasi two-body decays are calculated within the light-cone sum rule approach utilizing the leading twist $B$ meson light-cone distribution amplitudes. Finally, the decay branching fraction contribution from each resonance are calculated. Some of them are compatible with experiment or previous theoretical works. Including the effects of non-resonant and final-state interactions, we also evaluate the total branching fraction.

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