Searches for 25 rare and forbidden decays of $D^{+}$ and $ {D}_s^{+} $ mesons
- Aaij, Roel et al
- arXiv:2011.00217LHCb-PAPER-2020-007CERN-EP-2020-140
| \small Distributions of the three-body invariant mass for the \DTopiphiphiToll candidates used for normalisation and calibration. The final states are specified in the mass label. The \Dp (\Dsp) signal component is shown as a dashed orange (green) line, peaking backgrounds are denoted by the solid (hashed) regions and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass for the \DTopiphiphiToll candidates used for normalisation and calibration. The final states are specified in the mass label. The \Dp (\Dsp) signal component is shown as a dashed orange (green) line, peaking backgrounds are denoted by the solid (hashed) regions and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two muons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with two electrons. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an oppositely charged electron and muon. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an electron and a muon with matching charge. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an electron and a muon with matching charge. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an electron and a muon with matching charge. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Distributions of the three-body invariant mass in the signal regions for decays with an electron and a muon with matching charge. The final states are specified in the mass label. The left (right) fit with the signal-plus-background (background-only) hypothesis is overlaid with the peaking backgrounds denoted by dashed lines and the non-peaking background is denoted by the blue dotted line. |
| \small Upper limits at \SI{90}{\percent} confidence level on the \DorDsp signal channels. The median (orange), $\pm1\sigma$ and $\pm2\sigma$ expected limits are shown as box plots and the observed limit is given by a black cross. The green line shows the previous world's best limit for each channel where the solid, dotted and dashed lines correspond to BaBar, CLEO and LHCb~\cite{Lees:2011hb,Rubin:2010cq,LHCB-PAPER-2012-051}. |
| \small Upper limits at \SI{90}{\percent} confidence level on the \DorDsp signal channels. The median (orange), $\pm1\sigma$ and $\pm2\sigma$ expected limits are shown as box plots and the observed limit is given by a black cross. The green line shows the previous world's best limit for each channel where the solid, dotted and dashed lines correspond to BaBar, CLEO and LHCb~\cite{Lees:2011hb,Rubin:2010cq,LHCB-PAPER-2012-051}. |