Figure 1: Trigger efficiency as a function of p_T with each low-p_T threshold; MU0 (filled circles), MU5 (filled triangles) and MU6 (open squares) for muons with |η|<2.5 at the interaction point.

Figure 2: The |η| dependency of the trigger efficiency for MU0 (a) and MU6 (b) trigger selections. Solid lines correspond to the simulated muons with p_T=19 GeV, dotted lines are for muons with p_T at threshold (in the case of MU0 this threshold is set to 4 GeV).

Figure 3: The φ dependency of the trigger efficiency for MU0 (a) and MU6 (b) trigger selections. Solid lines correspond to the simulated muons with p_T=19 GeV, dotted lines are for muons with p_T at threshold (in the case of MU0 this threshold is set to 4 GeV).

Figure 4: (a) Trigger efficiency as a function of ΔR in the semi-leptonic rare B decay B_s⁰→μ⁺μ^-φ using the 2MU0 (filled circles) and 2MU6 (open squares) with MuCTPI. (b) Effect of MuCTPI as a function of the opening angle, ε(without MuCTPI)/ε(with MuCTPI) for 2MU0 (filled circles) and 2MU6 (open squares).

Figure 5: (a) The truth p_T distribution of the two leading muons is different opening angles range in B_s⁰→μ⁺μ^-φ events: ΔR<0.1 (filled circles), 0.2<ΔR<0.4 (filled triangles) and ΔR>0.5 (filled squares). (b) The efficiency of 2MU0 as a function of opening angles for two cases: the ΔR separation of the two muons is either larger (filled circles) or smaller (open circles) at the muon trigger system compared to that at the primary vertex.

Figure 6: (a) Scaled di-muon invariant mass-squared distribution in B_s⁰→μ⁺μ^-φ events: no level-1 selection (open histogram), triggered by 2MU0 (hatched histogram) and by 2MU6(cross hatched histogram). (b) Efficiencies of 2MU0 (filled circles) and 2MU6 (open squares) as a function of di-muon invariant mass-squared. The two lines show the relative efficiency with respect to the corresponding average value for 2MU0 (solid line) and 2MU6 (dotted line).

Figure 7: (a) Forward-Backward asymmetry in B_s⁰→μ⁺μ^-φ events: no level-1 selection (filled triangles), triggered by 2MU0 (filled circles) and by 2MU6 (open squares). (b) deviation between A_FB 's with and without triggers (A_FB[2MUx] - A_FB[no selection]: 2MU0 (filled circles) and 2MU6 (open squares).

Table 1: The level-1 trigger efficiency of various configurations. The efficiency is calculated with respect to the number of generated events (not to the number of muons) of three different physics processes. The errors are statistical only.