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Search for structure in the $B_s^0\pi^\pm$ invariant mass spectrum

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Academic year: 2021

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Figure 1: Selected candidates for (left) B s 0 → D − s π + and (right) B s 0 → J/ψ φ decays, with p T (B s 0 ) > 5 GeV, where the B s 0 signal window requirements of |m(D s − π + ) − 5367 MeV| < 30 MeV and |m(J/ψ φ) − 5367 MeV| < 13 MeV are indica
Figure 2: Results of the fit to the B s 0 π ± mass distribution for candidates (both B s 0 modes combined) with minimum p T (B s 0 ) of (top) 5 GeV, (middle) 10 GeV and (bottom) 15 GeV
Table 1: Yields, N , of B s 0 and X(5568) candidates obtained from the fits to the B s 0 and B s 0 π ± candidate mass distributions, with statistical uncertainties only
Figure 3: Upper limits (ULs) at 90 % confidence level (CL) as functions of the mass and width of a purported exotic state X decaying to B 0 s π ± with minimum p T (B s 0 ) of (top) 5 GeV, (middle) 10 GeV and (bottom) 15 GeV

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