Observation of an Axial-Vector State in the Study of the Decay (Formula presented)

The BESIII collaboration

doi:10.1103/PhysRevLett.134.191901

Observation of an Axial-Vector State in the Study of the Decay (Formula presented)

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
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
Nankai University
Moscow Institute of Physics and Technology
China University of Geosciences, Wuhan
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 South China
University of Jinan
Liaoning University
Sun Yat-Sen University
University of Eastern Piedmont
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
Liaoning Normal University
Hangzhou Normal University
Huangshan College
University of Groningen
Indian Institute of Technology Madras
Justus Liebig University Giessen
Qufu Normal University
Renmin University of China
Lanzhou University
Hebei 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
IBA
University of Perugia
Universidad de Tarapacá
Petersburg Nuclear Physics Institute (PNPI)
Hunan Normal University
China Center of Advanced Science and Technology World Laboratory
Shanghai Jiao Tong University
Ministry of Education of the People's Republic of China
Near East University
University of Science and Technology Liaoning
Inner Mongolia University
Yantai University
Beihang University
Shanxi Normal University
Henan University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Using (Formula presented) (Formula presented) events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay (Formula presented) is performed with the covariant tensor approach. In addition to the established states (Formula presented)) and (Formula presented), an axial-vector state with a mass near (Formula presented) is observed for the first time. Its mass and width are measured to be (Formula presented) and (Formula presented), respectively. The product branching fractions of (Formula presented) and (Formula presented) are determined to be (Formula presented) and (Formula presented), respectively. The branching fraction (Formula presented) is measured for the first time to be ((Formula presented). The first uncertainties are statistical and the second are systematic.

Original language	English
Article number	191901
Journal	Physical Review Letters
Volume	134
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.134.191901
State	Published - 16 May 2025

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10.1103/PhysRevLett.134.191901

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@article{a45bd123df5b4994a277ee384c2a7096,

title = "Observation of an Axial-Vector State in the Study of the Decay (Formula presented)",

abstract = "Using (Formula presented) (Formula presented) events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay (Formula presented) is performed with the covariant tensor approach. In addition to the established states (Formula presented)) and (Formula presented), an axial-vector state with a mass near (Formula presented) is observed for the first time. Its mass and width are measured to be (Formula presented) and (Formula presented), respectively. The product branching fractions of (Formula presented) and (Formula presented) are determined to be (Formula presented) and (Formula presented), respectively. The branching fraction (Formula presented) is measured for the first time to be ((Formula presented). The first uncertainties are statistical and the second are systematic.",

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

note = "Publisher Copyright: {\textcopyright} 2025 Published by the American Physical Society.",

year = "2025",

month = may,

day = "16",

doi = "10.1103/PhysRevLett.134.191901",

language = "English",

volume = "134",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Observation of an Axial-Vector State in the Study of the Decay (Formula presented)

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Afedulidis, O.

AU - Kabana, S.

AU - The BESIII collaboration

PY - 2025/5/16

Y1 - 2025/5/16

N2 - Using (Formula presented) (Formula presented) events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay (Formula presented) is performed with the covariant tensor approach. In addition to the established states (Formula presented)) and (Formula presented), an axial-vector state with a mass near (Formula presented) is observed for the first time. Its mass and width are measured to be (Formula presented) and (Formula presented), respectively. The product branching fractions of (Formula presented) and (Formula presented) are determined to be (Formula presented) and (Formula presented), respectively. The branching fraction (Formula presented) is measured for the first time to be ((Formula presented). The first uncertainties are statistical and the second are systematic.

AB - Using (Formula presented) (Formula presented) events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay (Formula presented) is performed with the covariant tensor approach. In addition to the established states (Formula presented)) and (Formula presented), an axial-vector state with a mass near (Formula presented) is observed for the first time. Its mass and width are measured to be (Formula presented) and (Formula presented), respectively. The product branching fractions of (Formula presented) and (Formula presented) are determined to be (Formula presented) and (Formula presented), respectively. The branching fraction (Formula presented) is measured for the first time to be ((Formula presented). The first uncertainties are statistical and the second are systematic.

UR - https://www.scopus.com/pages/publications/105005952745

U2 - 10.1103/PhysRevLett.134.191901

DO - 10.1103/PhysRevLett.134.191901

M3 - Article

C2 - 40446269

AN - SCOPUS:105005952745

SN - 0031-9007

VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

M1 - 191901

ER -

Observation of an Axial-Vector State in the Study of the Decay (Formula presented)

Abstract

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