Search for Light New Physics at 𝐵 Factories

Figure 6

Distribution of the dimuon invariant mass for 𝐵→𝐾^∗0𝜇⁺𝜇⁻ (a) and 𝐵→𝜌⁰𝜇⁺𝜇⁻ (b) signal events for Belle data. The signal regions are shown as dashed bands in the inserts.

(a)

(b)