TY - JOUR
T1 - Study of φ →K K ¯ and KS0 - KL0 Asymmetry in the Amplitude Analysis of Ds+ → KS0 KL0 π+ Decays
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ai, X. C.
AU - Kabana, S.
AU - The BESIII collaboration
N1 - Publisher Copyright:
© 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP
PY - 2025/10/17
Y1 - 2025/10/17
N2 - Using e+e- annihilation data corresponding to a total integrated luminosity of 7.33 fb-1 collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we provide the first amplitude analysis and absolute branching fraction measurement of the hadronic decay Ds+→KS0KL0π+. The branching fraction of Ds+→KS0KL0π+ is determined to be (1.86±0.06stat±0.03syst)%. Combining the B[Ds+→φ(→KS0KL0)π+] obtained in this Letter and the world average of B[Ds+→φ(→K+K-)π+], we measure the relative branching fraction B(φ→KS0KL0)/B(φ→K+K-)=(0.593±0.023stat±0.014syst±0.016φπ), where the third error is due to the uncertainty of the B(Ds+→φπ+,φ→K+K-). Our result deviates from the Particle Data Group value by more than 3σ. Furthermore, the asymmetry of the branching fractions of Ds+→KS0K∗(892)+ and Ds+→KL0K∗(892)+, ({B[Ds+→KS0K∗(892)+]-B[Ds+→KL0K∗(892)+]}/{B[Ds+→KS0K∗(892)+]+B[Ds+→KL0K∗(892)+]}), is determined to be (-14.5±5.1stat±1.8syst)%.
AB - Using e+e- annihilation data corresponding to a total integrated luminosity of 7.33 fb-1 collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we provide the first amplitude analysis and absolute branching fraction measurement of the hadronic decay Ds+→KS0KL0π+. The branching fraction of Ds+→KS0KL0π+ is determined to be (1.86±0.06stat±0.03syst)%. Combining the B[Ds+→φ(→KS0KL0)π+] obtained in this Letter and the world average of B[Ds+→φ(→K+K-)π+], we measure the relative branching fraction B(φ→KS0KL0)/B(φ→K+K-)=(0.593±0.023stat±0.014syst±0.016φπ), where the third error is due to the uncertainty of the B(Ds+→φπ+,φ→K+K-). Our result deviates from the Particle Data Group value by more than 3σ. Furthermore, the asymmetry of the branching fractions of Ds+→KS0K∗(892)+ and Ds+→KL0K∗(892)+, ({B[Ds+→KS0K∗(892)+]-B[Ds+→KL0K∗(892)+]}/{B[Ds+→KS0K∗(892)+]+B[Ds+→KL0K∗(892)+]}), is determined to be (-14.5±5.1stat±1.8syst)%.
UR - https://www.scopus.com/pages/publications/105020652689
U2 - 10.1103/6py9-h8qv
DO - 10.1103/6py9-h8qv
M3 - Article
C2 - 41172186
AN - SCOPUS:105020652689
SN - 0031-9007
VL - 135
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
M1 - 161902
ER -