Searches are presented for Bc+→Dh+h- decays, where D is a charmed meson and h± is a charged pion or kaon, using pp collision data collected by the LHCb experiment corresponding to an integrated luminosity of 9 fb-1. The decays Bc+→D+K+π-, Bc+→D∗+K+π-, and Bc+→Ds+K+K- are observed for the first time. Their branching fractions, expressed as ratios relative to that of the Bc+→Bs0π+ decay, are determined to be R(Bc+→D+K+π-)=(1.96±0.23±0.08±0.10)×10-3, R(Bc+→D∗+K+π-)=(3.67±0.55±0.24±0.20)×10-3, R(Bc+→Ds+K+K-)=(1.61±0.35±0.13±0.07)×10-3, where the first uncertainty is statistical, the second is systematic, and the third is due to the limited precision on the D-meson branching fractions. The decay channels proceed primarily through excited K0 or D0 resonances or φ mesons, and open a new avenue for studies of charge-parity violation in beauty mesons. [LHCb Collaboration]

Observation of B c + → D h + h − Decays / R. Aaij, A. . .A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 136:2(2026 Jan 14), pp. 021804.1-021804.12. [10.1103/fsj9-89jt]

Observation of B c + → D h + h − Decays

S. Cesare;C. Mancuso;D. Marangotto;N. Neri;G. Tonani;T. Tork;Z. Wang;
2026

Abstract

Searches are presented for Bc+→Dh+h- decays, where D is a charmed meson and h± is a charged pion or kaon, using pp collision data collected by the LHCb experiment corresponding to an integrated luminosity of 9 fb-1. The decays Bc+→D+K+π-, Bc+→D∗+K+π-, and Bc+→Ds+K+K- are observed for the first time. Their branching fractions, expressed as ratios relative to that of the Bc+→Bs0π+ decay, are determined to be R(Bc+→D+K+π-)=(1.96±0.23±0.08±0.10)×10-3, R(Bc+→D∗+K+π-)=(3.67±0.55±0.24±0.20)×10-3, R(Bc+→Ds+K+K-)=(1.61±0.35±0.13±0.07)×10-3, where the first uncertainty is statistical, the second is systematic, and the third is due to the limited precision on the D-meson branching fractions. The decay channels proceed primarily through excited K0 or D0 resonances or φ mesons, and open a new avenue for studies of charge-parity violation in beauty mesons. [LHCb Collaboration]
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
   European Particle physics Latin American NETwork
   EPLANET
   European Commission
   SEVENTH FRAMEWORK PROGRAMME - SP3-People - Marie-Curie Actions
   246806
14-gen-2026
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1250876
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