Measurement of the absolute branching fraction of the three-body decay Λc+ → Ξ0K+π0 and search for Λc+ →nK+π0, ς0K+π0, and Λk+π0

The BESIII collaboration

doi:10.1103/PhysRevD.109.052001

Measurement of the absolute branching fraction of the three-body decay Λc+ → Ξ0K+π0 and search for Λc+ →nK+π0, ς0K+π0, and Λk+π0

The BESIII collaboration

Institute of Higher Research

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

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Abstract

The Cabbibo-favored decay Λc+→Ξ0K+π0 is studied for the first time using 6.1 fb-1 of e+e- collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay Λc+→Ξ0K+π0 is measured to be (7.79±1.46±0.95)×10-3, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay Λc+→Ξ(1530)0K+ is (5.99±1.04±0.32)×10-3, which is consistent with the previous result of (5.02±0.99±0.31)×10-3. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay Λc+→nK+π0 is 7.1×10-4 at the 90% confidence level. The upper limits on the branching fractions of Λc+→ς0K+π0 and ΛK+π0 are also determined to be 1.8×10-3 and 2.0×10-3, respectively.

Original language	English
Article number	052001
Journal	Physical Review D
Volume	109
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.109.052001
State	Published - 1 Mar 2024

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10.1103/PhysRevD.109.052001

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@article{63610c0d47414039a29c05278f40ce94,

title = "Measurement of the absolute branching fraction of the three-body decay Λc+ → Ξ0K+π0 and search for Λc+ →nK+π0, ς0K+π0, and Λk+π0",

abstract = "The Cabbibo-favored decay Λc+→Ξ0K+π0 is studied for the first time using 6.1 fb-1 of e+e- collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay Λc+→Ξ0K+π0 is measured to be (7.79±1.46±0.95){\texttimes}10-3, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay Λc+→Ξ(1530)0K+ is (5.99±1.04±0.32){\texttimes}10-3, which is consistent with the previous result of (5.02±0.99±0.31){\texttimes}10-3. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay Λc+→nK+π0 is 7.1{\texttimes}10-4 at the 90\% confidence level. The upper limits on the branching fractions of Λc+→ς0K+π0 and ΛK+π0 are also determined to be 1.8{\texttimes}10-3 and 2.0{\texttimes}10-3, respectively.",

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

note = "Publisher Copyright: {\textcopyright} 2024 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 SCOAP3.",

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T1 - Measurement of the absolute branching fraction of the three-body decay Λc+ → Ξ0K+π0 and search for Λc+ →nK+π0, ς0K+π0, and Λk+π0

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Afedulidis, O.

AU - Kabana, S.

AU - The BESIII collaboration

N1 - Publisher Copyright: © 2024 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 SCOAP3.

PY - 2024/3/1

Y1 - 2024/3/1

N2 - The Cabbibo-favored decay Λc+→Ξ0K+π0 is studied for the first time using 6.1 fb-1 of e+e- collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay Λc+→Ξ0K+π0 is measured to be (7.79±1.46±0.95)×10-3, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay Λc+→Ξ(1530)0K+ is (5.99±1.04±0.32)×10-3, which is consistent with the previous result of (5.02±0.99±0.31)×10-3. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay Λc+→nK+π0 is 7.1×10-4 at the 90% confidence level. The upper limits on the branching fractions of Λc+→ς0K+π0 and ΛK+π0 are also determined to be 1.8×10-3 and 2.0×10-3, respectively.

AB - The Cabbibo-favored decay Λc+→Ξ0K+π0 is studied for the first time using 6.1 fb-1 of e+e- collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay Λc+→Ξ0K+π0 is measured to be (7.79±1.46±0.95)×10-3, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay Λc+→Ξ(1530)0K+ is (5.99±1.04±0.32)×10-3, which is consistent with the previous result of (5.02±0.99±0.31)×10-3. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay Λc+→nK+π0 is 7.1×10-4 at the 90% confidence level. The upper limits on the branching fractions of Λc+→ς0K+π0 and ΛK+π0 are also determined to be 1.8×10-3 and 2.0×10-3, respectively.

UR - https://www.scopus.com/pages/publications/85187494206

U2 - 10.1103/PhysRevD.109.052001

DO - 10.1103/PhysRevD.109.052001

M3 - Article

AN - SCOPUS:85187494206

SN - 2470-0010

VL - 109

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052001

ER -

Measurement of the absolute branching fraction of the three-body decay Λc+ → Ξ0K+π0 and search for Λc+ →nK+π0, ς0K+π0, and Λk+π0

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