Observation of D+ → KS0 a0 (980)+ in the Amplitude Analysis of D+ → KS0 π+η

The BESIII collaboration

doi:10.1103/PhysRevLett.132.131903

Observation of D+ → KS0 a0 (980)+ in the Amplitude Analysis of D+ → KS0 π+η

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
Zhengzhou University
Chinese Academy of Sciences
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
University of Chinese Academy of Sciences
National Centre for Nuclear Research
Mongolian Academy of Sciences
Carnegie Mellon University
University of Münster
Wuhan University
Istinye University
Xinyang Normal 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
Ruhr University Bochum
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
Indiana University Bloomington
Henan Normal University
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
China University of Geosciences, Wuhan
Justus Liebig University Giessen
Indian Institute of Technology Madras
Qufu Normal University
Renmin University of China
Lanzhou University
Sichuan University
Guangxi Normal University
Shanxi University
Central China Normal University
Henan University of Science and Technology
Central South University
Zhejiang University
Goethe University Frankfurt
COMSATS University Islamabad
The Department of Mathematical Sciences
University of Perugia
Universidad de Tarapacá
University of South China
Petersburg Nuclear Physics Institute (PNPI)
Hunan Normal University
Shanghai Jiao Tong University
Ministry of Education of the People's Republic of China
Shanxi Normal University
Near East University
Hebei University
University of Science and Technology Liaoning
China Center of Advanced Science and Technology World Laboratory
Inner Mongolia University
Yantai University
Beihang University
Henan University

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14 Scopus citations

Abstract

We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+K̄0∗(1430)0 with K̄0∗(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively.

Original language	English
Article number	131903
Journal	Physical Review Letters
Volume	132
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.132.131903
State	Published - 29 Mar 2024

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title = "Observation of D+ → KS0 a0 (980)+ in the Amplitude Analysis of D+ → KS0 π+η",

abstract = "We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)\%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+{\=K}0∗(1430)0 with {\=K}0∗(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)\% and (0.14±0.03stat±0.01syst)\%, respectively.",

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} 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 - Observation of D+ → KS0 a0 (980)+ in the Amplitude Analysis of D+ → KS0 π+η

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ai, X. C.

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 - 2024/3/29

Y1 - 2024/3/29

N2 - We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+K̄0∗(1430)0 with K̄0∗(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively.

AB - We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+K̄0∗(1430)0 with K̄0∗(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively.

UR - https://www.scopus.com/pages/publications/85189701639

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DO - 10.1103/PhysRevLett.132.131903

M3 - Article

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VL - 132

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 131903

ER -

Observation of D+ → KS0 a0 (980)+ in the Amplitude Analysis of D+ → KS0 π+η

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