Search for rare decays of $D^0$ mesons into two muons
- Aaij, R. et al
- arXiv:2212.11203LHCb-PAPER-2022-029CERN-EP-2022-273
| Distributions of \deltam for (left) \dkpi and (right) \dpipi normalisation channels candidates for (top) \runone and (bottom) \runtwo data. The distributions are superimposed with the fit. |
| Distributions of \deltam for (left) \dkpi and (right) \dpipi normalisation channels candidates for (top) \runone and (bottom) \runtwo data. The distributions are superimposed with the fit. |
| Distributions of \deltam for (left) \dkpi and (right) \dpipi normalisation channels candidates for (top) \runone and (bottom) \runtwo data. The distributions are superimposed with the fit. |
| Distributions of \deltam for (left) \dkpi and (right) \dpipi normalisation channels candidates for (top) \runone and (bottom) \runtwo data. The distributions are superimposed with the fit. |
| Distribution of (left) \mmumu and (right) \deltam for the \dmumu candidates in data from (top) \runone and (bottom) \runtwo, for the most sensitive BDT interval. The distribution is superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distribution of (left) \mmumu and (right) \deltam for the \dmumu candidates in data from (top) \runone and (bottom) \runtwo, for the most sensitive BDT interval. The distribution is superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distribution of (left) \mmumu and (right) \deltam for the \dmumu candidates in data from (top) \runone and (bottom) \runtwo, for the most sensitive BDT interval. The distribution is superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distribution of (left) \mmumu and (right) \deltam for the \dmumu candidates in data from (top) \runone and (bottom) \runtwo, for the most sensitive BDT interval. The distribution is superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runone data in, top to bottom, the three BDT intervals. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runone data in, top to bottom, the three BDT intervals. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runone data in, top to bottom, the three BDT intervals. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runone data in, top to bottom, the three BDT intervals. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runtwo data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runone data in, top to bottom, the three BDT intervals. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runone data in, top to bottom, the three BDT intervals. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runtwo data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runtwo data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runtwo data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runtwo data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for \runtwo data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Each of the two distributions is in the signal region of the other variable, see text for details. Untagged and tagged decays are included in a single component for signal and \dpipi background. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 1 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 1 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 1 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 1 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 1 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 1 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 2 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 2 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 2 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 2 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 2 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Distributions of (left) \mmumu and (right) \deltam for the \dmumu candidates for Run 2 data in, top to bottom, the three BDT bins. The distributions are superimposed with the fit to data. Untagged and tagged decays are included in a single component for signal and \dpipi background. Unlike the correspondent figures in the main body of the Letter, here all events are shown. |
| Two-dimensional distribution of \md versus \deltam for the most sensitive BDT interval in the (left) Run~1 and (right) Run~2 data. Red lines represent the signal region of each variable as defined in the text. |
| Two-dimensional distribution of \md versus \deltam for the most sensitive BDT interval in the (left) Run~1 and (right) Run~2 data. Red lines represent the signal region of each variable as defined in the text. |
| Distribution of the BDT output. The \dpipi candidates in data and simulation are shown and used to weight the simulated \dmumu decays distribution used for the search. |
| Distribution of the BDT output. The \dpipi candidates in data and simulation are shown and used to weight the simulated \dmumu decays distribution used for the search. |
| Efficiency for two pions to pass a requirement on the $ProbNNmu$ variable (after additional requirements on its identification as muon) in Run 2, as measured from \dpipipi and \dspipipi decays in data and \dpipi decays in simulation. Same sign pions are used in data to avoid contamination for hadronic resonances decaying to two real muons. |
| Value of $\rm{CL_s}$ as a function of the \dmumu branching fraction. |