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Measurement of the resonant and CP components in $\overline{B}^0\rightarrow J/\psi \pi^+\pi^-$ decays

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Academic year: 2021

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Figure 1: (a) Tree level and (b) penguin diagram for B 0 decays into J/ψπ + π − .
Figure 2: Illustration of the three angles used in this analysis.
Figure 3: Invariant mass of J/ψπ + π − combinations together with the data fit. The (red) solid curve shows the B 0 signal, the (brown) dotted line shows the combinatorial background, the (green) short-dashed line shows the B − background, the (purple) dot
Figure 4: Distribution of m 2 (π + π − ) versus m 2 (J/ψ π + ) for all events within ±20 MeV of the B 0 mass.
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