Study of φ →K K  ̄ and KS0 - KL0 Asymmetry in the Amplitude Analysis of Ds+ → KS0 KL0 π+ Decays

BESIII Collaboration

doi:10.1103/6py9-h8qv

Study of φ →K K ̄ and KS0 - KL0 Asymmetry in the Amplitude Analysis of Ds+ → KS0 KL0 π+ Decays

BESIII Collaboration

Instituto de Alta Investigación

CAS - Institute of High Energy Physics
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
Uppsala University
Zhengzhou University
Chinese Academy of Sciences
Johannes Gutenberg University Mainz
University of Turin
National Institute for Nuclear Physics
University of Science and Technology of China
University of Chinese Academy of Sciences
Southeast University, Nanjing
Joint Institute for Nuclear Research
Peking University
National Centre for Nuclear Research
Mongolian Academy of Sciences
Carnegie Mellon University
University of Münster
Wuhan University
Lanzhou University
Istinye University
Nankai University
Moscow Institute of Physics and Technology
China University of Geosciences, Wuhan
Soochow University
Henan University
Nanjing University
North China Electric Power University
Tsinghua University
CAS - Institute of Modern Physics
Fudan University
Jilin University
Guangxi University of Technology
Hunan University
Sun Yat-Sen University
Chung-Ang University
University of Bristol
Shandong University
Yunnan University
Helmholtz Institute Mainz
Ruhr University Bochum
University of South China
University of Jinan
Liaoning University
Inner Mongolia University
Henan Normal University
University of Eastern Piedmont
Nanjing Normal University
University of Ferrara
University of Manchester
University of Oxford
GSI Helmholtz Centre for Heavy Ion Research
Guangxi University
Shandong Normal University
Indiana University Bloomington
University of Hawai'i at Mānoa
Suranaree University of Technology
South China Normal University
University of the Punjab
Hangzhou Normal University
Huangshan College
University of Groningen
Indian Institute of Technology Madras
Justus Liebig University Giessen
Qufu Normal University
Liaoning Normal University
Renmin University of China
Hebei University
China Center of Advanced Science and Technology World Laboratory
Sichuan University
Guangxi Normal University
Shanxi University
Central China Normal University
Henan University of Science and Technology
Henan University of Technology
Central South University
Zhejiang University
Goethe University Frankfurt
COMSATS University Islamabad
IBA
University of Perugia
Universidad de Tarapacá
Petersburg Nuclear Physics Institute (PNPI)
Hunan Normal University
Swiss Federal Institute of Technology Lausanne
Shanghai Jiao Tong University
Ministry of Education of the People's Republic of China
Near East University
Beihang University
Yantai University
Shanxi Normal University
University of Science and Technology Liaoning

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Resumen

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)%.

Idioma original	Inglés
Número de artículo	161902
Publicación	Physical Review Letters
Volumen	135
N.º	16
DOI	https://doi.org/10.1103/6py9-h8qv
Estado	Publicada - 17 oct 2025

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@article{fe83c98377fc470ea67441a4ac4013dc,

title = "Study of φ →K K{\= } and KS0 - KL0 Asymmetry in the Amplitude Analysis of Ds+ → KS0 KL0 π+ Decays",

abstract = "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)\%.",

author = "M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and Ai, \{X. C.\} and S. Kabana and \{The BESIII collaboration\}",

note = "Publisher Copyright: {\textcopyright} 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",

year = "2025",

month = oct,

day = "17",

doi = "10.1103/6py9-h8qv",

language = "English",

volume = "135",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "16",

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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 -

Study of φ →K K ̄ and KS0 - KL0 Asymmetry in the Amplitude Analysis of Ds+ → KS0 KL0 π+ Decays

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