CERN Accelerating science

Invariant mass distribution of the $\PBzs$ candidates with the fit result superimposed. The outermost pairs of dark vertical arrows define the lower and upper $\PBzs$ sidebands, while the innermost light vertical arrows delimit the signal region.

(a) The $M^{\Delta}(\PBzs\Pgppm)$ distribution for events in the $\PBzs$ signal (points) and sideband regions (bands). The latter is normalized to the former. The vertical band indicates the region $m_{\PX}\pm\Gamma_{\PX}$. (b) The $M^{\Delta}(\PBzs\Pgppm)$ distribution for events in the $\PBzs$ signal (points) and lower and higher sideband regions (bands), when the requirement on $ M(\PKp\PKm) $ is removed (see text for additional requirements). The three distributions are normalized from the mass threshold up to $5.74\GeV$. The excess observed for events in the $ \PBzs $ signal and higher sideband regions is due to $\PB^{(*)}_{1,2}{}^+\to\PBstz\Pgpp$ decays.

(a) The $M^{\Delta}(\PBzs\Pgppm)$ distribution for events in the $\PBzs$ signal (points) and sideband regions (bands). The latter is normalized to the former. The vertical band indicates the region $m_{\PX}\pm\Gamma_{\PX}$. (b) The $M^{\Delta}(\PBzs\Pgppm)$ distribution for events in the $\PBzs$ signal (points) and lower and higher sideband regions (bands), when the requirement on $ M(\PKp\PKm) $ is removed (see text for additional requirements). The three distributions are normalized from the mass threshold up to $5.74\GeV$. The excess observed for events in the $ \PBzs $ signal and higher sideband regions is due to $\PB^{(*)}_{1,2}{}^+\to\PBstz\Pgpp$ decays.

The $M^{\Delta}(\PBzs\Pgppm)$ distribution for events in the $ \PBzs $ signal region with the result of the fit superimposed for the baseline selection with $\pt(\PBzs)>10\GeV$ (a) and $\pt(\PBzs)>15\GeV$ (b). The vertical band indicates the region $m_{\PX}\pm\Gamma_{\PX}$. The lower panels display the pull (difference between the data and the fit result, divided by the statistical uncertainty in the data).

The $M^{\Delta}(\PBzs\Pgppm)$ distribution for events in the $ \PBzs $ signal region with the result of the fit superimposed for the baseline selection with $\pt(\PBzs)>10\GeV$ (a) and $\pt(\PBzs)>15\GeV$ (b). The vertical band indicates the region $m_{\PX}\pm\Gamma_{\PX}$. The lower panels display the pull (difference between the data and the fit result, divided by the statistical uncertainty in the data).

The $95\%$ \CL upper limit (UL) on $\rho_{\PX}$, Eq.~(\ref{eqnrho}), as a function of the mass of a possible exotic state decaying into $ \PBzs\Pgppm $ for five different values of the natural width of the state.

The $M^{\Delta}(\PBzs\Pgppm)$ distributions for events in the $\PBzs$ (a) signal and (b) sideband regions for different $\Delta R$ requirements. The uncertainties are not shown for the sake of clarity. The vertical band indicates the region $m_{\PX}\pm\Gamma_{\PX}$.

The $M^{\Delta}(\PBzs\Pgppm)$ distributions for events in the $\PBzs$ (a) signal and (b) sideband regions for different $\Delta R$ requirements. The uncertainties are not shown for the sake of clarity. The vertical band indicates the region $m_{\PX}\pm\Gamma_{\PX}$.