Measurement of the $D^*$ longitudinal polarization in $B^0 \to D^{* -}\tau^+\nu_{\tau}$ decays
- Aaij, R. et al
- arXiv:2311.05224LHCb-PAPER-2023-020CERN-EP-2023-225
 | Signal distributions of the \costhetaD variable in the two \qsq regions for the unpolarized and polarized components. The template for the unpolarized component is distorted by the effect of the reconstruction and the signal selection. |
 | Simulated (left) \qsq and (right) \costhetaD distributions for the \BToDstDzX control sample before and after the correction for the data-simulation differences in the \runt weighted data sample. The \BToDstDzX sample is selected using the isolation algorithm to search for an extra kaon around the $3\pi$ vertex. |
 | Simulated (left) \qsq and (right) \costhetaD distributions for the \BToDstDzX control sample before and after the correction for the data-simulation differences in the \runt weighted data sample. The \BToDstDzX sample is selected using the isolation algorithm to search for an extra kaon around the $3\pi$ vertex. |
 | Distribution of the key analysis variables obtained in the \BToDstDsX enhanced \runt data sample with the result of the fit superimposed: (top left) $m(\Dstar 3\pi)$, (top right) anti-\Ds BDT output, (middle left) $t_{\tau}$, (middle right) \qsq and (bottom) \costhetaD. |
 | Distribution of the key analysis variables obtained in the \BToDstDsX enhanced \runt data sample with the result of the fit superimposed: (top left) $m(\Dstar 3\pi)$, (top right) anti-\Ds BDT output, (middle left) $t_{\tau}$, (middle right) \qsq and (bottom) \costhetaD. |
 | Distribution of the key analysis variables obtained in the \BToDstDsX enhanced \runt data sample with the result of the fit superimposed: (top left) $m(\Dstar 3\pi)$, (top right) anti-\Ds BDT output, (middle left) $t_{\tau}$, (middle right) \qsq and (bottom) \costhetaD. |
 | Distribution of the key analysis variables obtained in the \BToDstDsX enhanced \runt data sample with the result of the fit superimposed: (top left) $m(\Dstar 3\pi)$, (top right) anti-\Ds BDT output, (middle left) $t_{\tau}$, (middle right) \qsq and (bottom) \costhetaD. |
 | Distribution of the key analysis variables obtained in the \BToDstDsX enhanced \runt data sample with the result of the fit superimposed: (top left) $m(\Dstar 3\pi)$, (top right) anti-\Ds BDT output, (middle left) $t_{\tau}$, (middle right) \qsq and (bottom) \costhetaD. |
 | Distribution of the key analysis variables obtained in the \BToDstDsX enhanced \runt data sample with the result of the fit superimposed: (top left) $m(\Dstar 3\pi)$, (top right) anti-\Ds BDT output, (middle left) $t_{\tau}$, (middle right) \qsq and (bottom) \costhetaD. |
 | Distributions of the fit variables in the (left) \runo and (right) \runt datasets with the fit results superimposed. |
 | Distributions of the fit variables in the (left) \runo and (right) \runt datasets with the fit results superimposed. |
 | Distributions of the fit variables in the (left) \runo and (right) \runt datasets with the fit results superimposed. |
 | Distributions of the fit variables in the (left) \runo and (right) \runt datasets with the fit results superimposed. |
 | Distributions of the fit variables in the (left) \runo and (right) \runt datasets with the fit results superimposed. |
 | Distributions of the fit variables in the (left) \runo and (right) \runt datasets with the fit results superimposed. |