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Measurement of CP asymmetry in D 0 → K K + and D 0 → π π decays

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Figure

Table 1. Number of signal decays determined from fits to the invariant mass distributions.
Figure 1. Invariant mass distributions for muon-tagged (a) D0 → K−K+, (b) D0 → π−π+ and(c) D0 → K−π+ candidates and for prompt (d) D+ → K−π+π+ and (e) D+ → K0π+ candidates.The results of the fits are overlaid.
Table 2. Values of the parameters used to calculate the K0 asymmetry [21, 25].
Figure 2. Raw asymmetry in the D+ → K0π+ decay shown for (a) long and (b) downstreamK0S candidates versus the K0S decay time in units of its lifetime.The long K0S candidates arereconstructed in the full data set, while the downstream K0S candidates are rec
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