By analyzing e+e− collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 20.3 fb−1, we measure the branching fractions of the doubly Cabibbo-suppressed (DCS) decays D0→ K+π−, D0→ K+π−π−π+, D0→ K+π−π0, D0→ K+π−π0π0, D+→ K+π+π−, and D+→ K+K+K−. We also perform the first searches for D0→ K+π−η, D0→ K+π−π0η, D+→ K+π+π−η, D+ → K+ (π+π−η)non−η′, and D+ → K+ηη and report the first observations and evidence for some of these final states. Combining the measurements with the world averages of the corresponding Cabibbo-favored (CF) decays, the ratios of the DCS/CF branching fractions are obtained. For the D+ → K+ (π+π−η)non−η′ decay, the ratio is significantly larger than the corresponding ratios of the other DCS decays.

Measurement of the branching fractions of doubly Cabibbo-suppressed D decays

Garzia, I.;
2025

Abstract

By analyzing e+e− collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 20.3 fb−1, we measure the branching fractions of the doubly Cabibbo-suppressed (DCS) decays D0→ K+π−, D0→ K+π−π−π+, D0→ K+π−π0, D0→ K+π−π0π0, D+→ K+π+π−, and D+→ K+K+K−. We also perform the first searches for D0→ K+π−η, D0→ K+π−π0η, D+→ K+π+π−η, D+ → K+ (π+π−η)non−η′, and D+ → K+ηη and report the first observations and evidence for some of these final states. Combining the measurements with the world averages of the corresponding Cabibbo-favored (CF) decays, the ratios of the DCS/CF branching fractions are obtained. For the D+ → K+ (π+π−η)non−η′ decay, the ratio is significantly larger than the corresponding ratios of the other DCS decays.
2025
Null, Null; Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2600816
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