CERN Accelerating science

Invariant mass distributions of the reconstructed $B_c^{\pm} \to J/\psi \pi^{\pm}$ candidates in 7~TeV data (top) and in 8~TeV data (bottom). The data are represented by the points with error bars (statistical only). The solid line is the projection of the results of the unbinned maximum likelihood fit to all candidates in the mass range 5620--6820 MeV. The dashed line is the projection of the background component of the same fit.

Invariant mass distributions of the reconstructed $B_c^{\pm} \to J/\psi \pi^{\pm}$ candidates in 7~TeV data (top) and in 8~TeV data (bottom). The data are represented by the points with error bars (statistical only). The solid line is the projection of the results of the unbinned maximum likelihood fit to all candidates in the mass range 5620--6820 MeV. The dashed line is the projection of the background component of the same fit.

The $Q = m(B_c^{\pm}\pi\pi)-m(B_c^{\pm})-2m(\pi^{\pm})$ distribution for the right-charge combinations (points with error bars) and for the same (wrong) pion charge combinations (shaded histogram) in 7~TeV data (top) and in 8~TeV data (bottom). The wrong-charge combinations are normalized to the same yield as the right-charge background. The solid line is the projection of the results of the unbinned maximum likelihood fit to all candidates in the range 0--700 MeV.

The $Q = m(B_c^{\pm}\pi\pi)-m(B_c^{\pm})-2m(\pi^{\pm})$ distribution for the right-charge combinations (points with error bars) and for the same (wrong) pion charge combinations (shaded histogram) in 7~TeV data (top) and in 8~TeV data (bottom). The wrong-charge combinations are normalized to the same yield as the right-charge background. The solid line is the projection of the results of the unbinned maximum likelihood fit to all candidates in the range 0--700 MeV.