Doubly cabibbo-suppressed D decays at BESIII
DOI:
https://doi.org/10.31349/SuplRevMexFis.3.0308048Keywords:
charm physics, hadronic decays, CP violation, Branching fractions, BESIIIAbstract
BESIII reports the first observation of the doubly Cabibbo-Suppressed decay D + → K+π +π −π 0 and the first evidence for D + → K+ω using an e +e − collision data sample corresponding to an integrated luminosity of 2.93 fb−1 taken at a center-of-mass energy of 3.773 GeV. The ratio of the branching fractions of D + → K+π +π −π 0 over D + → K−π +π +π 0 is significantly larger than other doubly CabibboSuppressed decays in the charm sector. The CP asymmetry in the separated charge-conjugate branching fractions for D + → K+π +π −π 0 is determined and no evidence of CP violation is found. An independent measurement of D + → K+π +π −π 0 with semileptonic tags is also reported.
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This contribution is calculated by P3 R=1 £ B(D + → K+R) · B(R → π +π −π 0 ) ¤ , where R sums over η, ω, and φ, B(D + → K+ω) is obtained in this work, and the other BFs are quoted from the PDG [1].
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