First measurements of the branching fractions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> <mml:mo stretchy="false">→</mml:mo> <mml:msup> <mml:mrow>

By analyzing <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mo stretchy="false">(</a:mo> <a:mn>10087</a:mn> <a:mo>±</a:mo> <a:mn>44</a:mn> <a:mo stretchy="false">)</a:mo> <a:mo>×</a:mo> <a:msup> <a:mn>10</a:mn> <a:mn>6</a:mn> </a:msup> <a:mi>J</a:mi> <a:mo>/</a:mo> <a:mi>ψ</a:mi> </a:math> events collected with the BESIII detector at the BEPCII, the decays <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mi>J</e:mi> <e:mo>/</e:mo> <e:mi>ψ</e:mi> <e:mo stretchy="false">→</e:mo> <e:msup> <e:mi mathvariant="normal">Ξ</e:mi> <e:mn>0</e:mn> </e:msup> <e:mover accent="true"> <e:mi mathvariant="normal">Λ</e:mi> <e:mo stretchy="false">¯</e:mo> </e:mover> <e:msubsup> <e:mi>K</e:mi> <e:mi>S</e:mi> <e:mn>0</e:mn> </e:msubsup> <e:mo>+</e:mo> <e:mi>c</e:mi> <e:mo>.</e:mo> <e:mi>c</e:mi> <e:mo>.</e:mo> </e:math> , <l:math xmlns:l="http://www.w3.org/1998/Math/MathML" display="inline"> <l:mi>J</l:mi> <l:mo>/</l:mo> <l:mi>ψ</l:mi> <l:mo stretchy="false">→</l:mo> <l:msup> <l:mi mathvariant="normal">Ξ</l:mi> <l:mn>0</l:mn> </l:msup> <l:msup> <l:mover accent="true"> <l:mi mathvariant="normal">Σ</l:mi> <l:mo stretchy="false">¯</l:mo> </l:mover> <l:mn>0</l:mn> </l:msup> <l:msubsup> <l:mi>K</l:mi> <l:mi>S</l:mi> <l:mn>0</l:mn> </l:msubsup> <l:mo>+</l:mo> <l:mi>c</l:mi> <l:mo>.</l:mo> <l:mi>c</l:mi> <l:mo>.</l:mo> </l:math> , and <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"> <s:mi>J</s:mi> <s:mo>/</s:mo> <s:mi>ψ</s:mi> <s:mo stretchy="false">→</s:mo> <s:msup> <s:mi mathvariant="normal">Ξ</s:mi> <s:mn>0</s:mn> </s:msup> <s:msup> <s:mover accent="true"> <s:mi mathvariant="normal">Σ</s:mi> <s:mo stretchy="false">¯</s:mo> </s:mover> <s:mo>−</s:mo> </s:msup> <s:msup> <s:mi>K</s:mi> <s:mo>+</s:mo> </s:msup> <s:mo>+</s:mo> <s:mi>c</s:mi> <s:mo>.</s:mo> <s:mi>c</s:mi> <s:mo>.</s:mo> </s:math> are observed for the first time. Their branching fractions are determined to be <z:math xmlns:z="http://www.w3.org/1998/Math/MathML" display="inline"> <z:mi mathvariant="script">B</z:mi> <z:mo stretchy="false">(</z:mo> <z:mi>J</z:mi> <z:mo>/</z:mo> <z:mi>ψ</z:mi> <z:mo stretchy="false">→</z:mo> <z:msup> <z:mi mathvariant="normal">Ξ</z:mi> <z:mn>0</z:mn> </z:msup> <z:mover accent="true"> <z:mi mathvariant="normal">Λ</z:mi> <z:mo stretchy="false">¯</z:mo> </z:mover> <z:msubsup> <z:mi>K</z:mi> <z:mi>S</z:mi> <z:mn>0</z:mn> </z:msubsup> <z:mo>+</z:mo> <z:mi>c</z:mi> <z:mo>.</z:mo> <z:mi>c</z:mi> <z:mo>.</z:mo> <z:mo stretchy="false">)</z:mo> <z:mo>=</z:mo> <z:mspace linebreak="goodbreak"/> <z:mo stretchy="false">(</z:mo> <z:mn>3.76</z:mn> <z:mo>±</z:mo> <z:mn>0.14</z:mn> <z:mo>±</z:mo> <z:mn>0.23</z:mn> <z:mo stretchy="false">)</z:mo> <z:mo>×</z:mo> <z:msup> <z:mn>10</z:mn> <z:mrow> <z:mo>−</z:mo> <z:mn>5</z:mn> </z:mrow> </z:msup> </z:math> , <mb:math xmlns:mb="http://www.w3.org/1998/Math/MathML" display="inline"> <mb:mi mathvariant="script">B</mb:mi> <mb:mo stretchy="false">(</mb:mo> <mb:mi>J</mb:mi> <mb:mo>/</mb:mo> <mb:mi>ψ</mb:mi> <mb:mo stretchy="false">→</mb:mo> <mb:msup> <mb:mi mathvariant="normal">Ξ</mb:mi> <mb:mn>0</mb:mn> </mb:msup> <mb:msup> <mb:mover accent="true"> <mb:mi mathvariant="normal">Σ</mb:mi> <mb:mo stretchy="false">¯</mb:mo> </mb:mover> <mb:mn>0</mb:mn> </mb:msup> <mb:msubsup> <mb:mi>K</mb:mi> <mb:mi>S</mb:mi> <mb:mn>0</mb:mn> </mb:msubsup> <mb:mo>+</mb:mo> <mb:mi>c</mb:mi> <mb:mo>.</mb:mo> <mb:mi>c</mb:mi> <mb:mo>.</mb:mo> <mb:mo stretchy="false">)</mb:mo> <mb:mo>=</mb:mo> <mb:mo stretchy="false">(</mb:mo> <mb:mn>2.24</mb:mn> <mb:mo>±</mb:mo> <mb:mn>0.32</mb:mn> <mb:mo>±</mb:mo> <mb:mn>0.31</mb:mn> <mb:mo stretchy="false">)</mb:mo> <mb:mo>×</mb:mo> <mb:msup> <mb:mn>10</mb:mn> <mb:mrow> <mb:mo>−</mb:mo> <mb:mn>5</mb:mn> </mb:mrow> </mb:msup> </mb:math> , and <yb:math xmlns:yb="http://www.w3.org/1998/Math/MathML" display="inline"> <yb:mi mathvariant="script">B</yb:mi> <yb:mo stretchy="false">(</yb:mo> <yb:mi>J</yb:mi> <yb:mo>/</yb:mo> <yb:mi>ψ</yb:mi> <yb:mo stretchy="false">→</yb:mo> <yb:mspace linebreak="goodbreak"/> <yb:msup> <yb:mi mathvariant="normal">Ξ</yb:mi> <yb:mn>0</yb:mn> </yb:msup> <yb:msup> <yb:mover accent="true"> <yb:mi mathvariant="normal">Σ</yb:mi> <yb:mo stretchy="false">¯</yb:mo> </yb:mover> <yb:mo>−</yb:mo> </yb:msup> <yb:msup> <yb:mi>K</yb:mi> <yb:mo>+</yb:mo> </yb:msup> <yb:mo>+</yb:mo> <yb:mi>c</yb:mi> <yb:mo>.</yb:mo> <yb:mi>c</yb:mi> <yb:mo>.</yb:mo> <yb:mo stretchy="false">)</yb:mo> <yb:mo>=</yb:mo> <yb:mo stretchy="false">(</yb:mo> <yb:mn>5.64</yb:mn> <yb:mo>±</yb:mo> <yb:mn>0.17</yb:mn> <yb:mo>±</yb:mo> <yb:mn>0.28</yb:mn> <yb:mo stretchy="false">)</yb:mo> <yb:mo>×</yb:mo> <yb:msup> <yb:mn>10</yb:mn> <yb:mrow> <yb:mo>−</yb:mo> <yb:mn>5</yb:mn> </yb:mrow>

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Publication Details

Journal
Physical review. D/Physical review. D.
Published
2025-11-19
DOI
https://doi.org/10.1103/lhnb-lgmr
Primary Topic
Quantum Chromodynamics and Particle Interactions
Type
article
Field-Weighted Citation Impact
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article

First measurements of the branching fractions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> <mml:mo stretchy="false">→</mml:mo> <mml:msup> <mml:mrow>

Karl J. Friston
Physical review. D/Physical review. D.
Quantum Chromodynamics and Particle Interactions
article

First measurements of the branching fractions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> <mml:mo stretchy="false">→</mml:mo> <mml:msup> <mml:mrow>

Karl J. Friston
article en

Abstract

By analyzing <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mo stretchy="false">(</a:mo> <a:mn>10087</a:mn> <a:mo>±</a:mo> <a:mn>44</a:mn> <a:mo stretchy="false">)</a:mo> <a:mo>×</a:mo> <a:msup> <a:mn>10</a:mn> <a:mn>6</a:mn> </a:msup> <a:mi>J</a:mi> <a:mo>/</a:mo> <a:mi>ψ</a:mi> </a:math> events collected with the BESIII detector at the BEPCII, the decays <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mi>J</e:mi> <e:mo>/</e:mo> <e:mi>ψ</e:mi> <e:mo stretchy="false">→</e:mo> <e:msup> <e:mi mathvariant="normal">Ξ</e:mi> <e:mn>0</e:mn> </e:msup> <e:mover accent="true"> <e:mi mathvariant="normal">Λ</e:mi> <e:mo stretchy="false">¯</e:mo> </e:mover> <e:msubsup> <e:mi>K</e:mi> <e:mi>S</e:mi> <e:mn>0</e:mn> </e:msubsup> <e:mo>+</e:mo> <e:mi>c</e:mi> <e:mo>.</e:mo> <e:mi>c</e:mi> <e:mo>.</e:mo> </e:math> , <l:math xmlns:l="http://www.w3.org/1998/Math/MathML" display="inline"> <l:mi>J</l:mi> <l:mo>/</l:mo> <l:mi>ψ</l:mi> <l:mo stretchy="false">→</l:mo> <l:msup> <l:mi mathvariant="normal">Ξ</l:mi> <l:mn>0</l:mn> </l:msup> <l:msup> <l:mover accent="true"> <l:mi mathvariant="normal">Σ</l:mi> <l:mo stretchy="false">¯</l:mo> </l:mover> <l:mn>0</l:mn> </l:msup> <l:msubsup> <l:mi>K</l:mi> <l:mi>S</l:mi> <l:mn>0</l:mn> </l:msubsup> <l:mo>+</l:mo> <l:mi>c</l:mi> <l:mo>.</l:mo> <l:mi>c</l:mi> <l:mo>.</l:mo> </l:math> , and <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"> <s:mi>J</s:mi> <s:mo>/</s:mo> <s:mi>ψ</s:mi> <s:mo stretchy="false">→</s:mo> <s:msup> <s:mi mathvariant="normal">Ξ</s:mi> <s:mn>0</s:mn> </s:msup> <s:msup> <s:mover accent="true"> <s:mi mathvariant="normal">Σ</s:mi> <s:mo stretchy="false">¯</s:mo> </s:mover> <s:mo>−</s:mo> </s:msup> <s:msup> <s:mi>K</s:mi> <s:mo>+</s:mo> </s:msup> <s:mo>+</s:mo> <s:mi>c</s:mi> <s:mo>.</s:mo> <s:mi>c</s:mi> <s:mo>.</s:mo> </s:math> are observed for the first time. Their branching fractions are determined to be <z:math xmlns:z="http://www.w3.org/1998/Math/MathML" display="inline"> <z:mi mathvariant="script">B</z:mi> <z:mo stretchy="false">(</z:mo> <z:mi>J</z:mi> <z:mo>/</z:mo> <z:mi>ψ</z:mi> <z:mo stretchy="false">→</z:mo> <z:msup> <z:mi mathvariant="normal">Ξ</z:mi> <z:mn>0</z:mn> </z:msup> <z:mover accent="true"> <z:mi mathvariant="normal">Λ</z:mi> <z:mo stretchy="false">¯</z:mo> </z:mover> <z:msubsup> <z:mi>K</z:mi> <z:mi>S</z:mi> <z:mn>0</z:mn> </z:msubsup> <z:mo>+</z:mo> <z:mi>c</z:mi> <z:mo>.</z:mo> <z:mi>c</z:mi> <z:mo>.</z:mo> <z:mo stretchy="false">)</z:mo> <z:mo>=</z:mo> <z:mspace linebreak="goodbreak"/> <z:mo stretchy="false">(</z:mo> <z:mn>3.76</z:mn> <z:mo>±</z:mo> <z:mn>0.14</z:mn> <z:mo>±</z:mo> <z:mn>0.23</z:mn> <z:mo stretchy="false">)</z:mo> <z:mo>×</z:mo> <z:msup> <z:mn>10</z:mn> <z:mrow> <z:mo>−</z:mo> <z:mn>5</z:mn> </z:mrow> </z:msup> </z:math> , <mb:math xmlns:mb="http://www.w3.org/1998/Math/MathML" display="inline"> <mb:mi mathvariant="script">B</mb:mi> <mb:mo stretchy="false">(</mb:mo> <mb:mi>J</mb:mi> <mb:mo>/</mb:mo> <mb:mi>ψ</mb:mi> <mb:mo stretchy="false">→</mb:mo> <mb:msup> <mb:mi mathvariant="normal">Ξ</mb:mi> <mb:mn>0</mb:mn> </mb:msup> <mb:msup> <mb:mover accent="true"> <mb:mi mathvariant="normal">Σ</mb:mi> <mb:mo stretchy="false">¯</mb:mo> </mb:mover> <mb:mn>0</mb:mn> </mb:msup> <mb:msubsup> <mb:mi>K</mb:mi> <mb:mi>S</mb:mi> <mb:mn>0</mb:mn> </mb:msubsup> <mb:mo>+</mb:mo> <mb:mi>c</mb:mi> <mb:mo>.</mb:mo> <mb:mi>c</mb:mi> <mb:mo>.</mb:mo> <mb:mo stretchy="false">)</mb:mo> <mb:mo>=</mb:mo> <mb:mo stretchy="false">(</mb:mo> <mb:mn>2.24</mb:mn> <mb:mo>±</mb:mo> <mb:mn>0.32</mb:mn> <mb:mo>±</mb:mo> <mb:mn>0.31</mb:mn> <mb:mo stretchy="false">)</mb:mo> <mb:mo>×</mb:mo> <mb:msup> <mb:mn>10</mb:mn> <mb:mrow> <mb:mo>−</mb:mo> <mb:mn>5</mb:mn> </mb:mrow> </mb:msup> </mb:math> , and <yb:math xmlns:yb="http://www.w3.org/1998/Math/MathML" display="inline"> <yb:mi mathvariant="script">B</yb:mi> <yb:mo stretchy="false">(</yb:mo> <yb:mi>J</yb:mi> <yb:mo>/</yb:mo> <yb:mi>ψ</yb:mi> <yb:mo stretchy="false">→</yb:mo> <yb:mspace linebreak="goodbreak"/> <yb:msup> <yb:mi mathvariant="normal">Ξ</yb:mi> <yb:mn>0</yb:mn> </yb:msup> <yb:msup> <yb:mover accent="true"> <yb:mi mathvariant="normal">Σ</yb:mi> <yb:mo stretchy="false">¯</yb:mo> </yb:mover> <yb:mo>−</yb:mo> </yb:msup> <yb:msup> <yb:mi>K</yb:mi> <yb:mo>+</yb:mo> </yb:msup> <yb:mo>+</yb:mo> <yb:mi>c</yb:mi> <yb:mo>.</yb:mo> <yb:mi>c</yb:mi> <yb:mo>.</yb:mo> <yb:mo stretchy="false">)</yb:mo> <yb:mo>=</yb:mo> <yb:mo stretchy="false">(</yb:mo> <yb:mn>5.64</yb:mn> <yb:mo>±</yb:mo> <yb:mn>0.17</yb:mn> <yb:mo>±</yb:mo> <yb:mn>0.28</yb:mn> <yb:mo stretchy="false">)</yb:mo> <yb:mo>×</yb:mo> <yb:msup> <yb:mn>10</yb:mn> <yb:mrow> <yb:mo>−</yb:mo> <yb:mn>5</yb:mn> </yb:mrow>

Physical review. D/Physical review. D.Vol. 112(11)
University of Science and Technology Liaoning (CN), Liaoning University (CN), Shandong University of Technology (CN), Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT), Uppsala University (SE), University of Science and Technology of China (CN), Southwest University of Science and Technology (CN), University of Hawaii System (US), Mongolian Academy of Sciences (MN), Central South University (CN), Hengyang Normal University (CN), Guangxi University (CN), Nanjing Normal University (CN), Liaoning Normal University (CN), North China Electric Power University (CN), Shandong University (CN), Hangzhou Normal University (CN), Hunan University (CN), Henan University of Science and Technology (CN), University of Groningen (NL), GSI Helmholtz Centre for Heavy Ion Research (DE), University of the Punjab (PK), Hunan Normal University (CN), Henan University (CN), Shanghai Jiao Tong University (CN), Yantai University (CN), University of Tarapacá (CL), Guangxi University of Science and Technology (CN), South China Normal University (CN), Yunnan University (CN), Jilin University (CN), Johannes Gutenberg University Mainz (DE), Justus-Liebig-Universität Gießen (DE), University of Ferrara (IT), Qufu Normal University (CN), Peking University (CN), Nankai University (CN), University of Münster (DE), Sichuan University (CN), Fudan University (CN), Inner Mongolia University (CN), University of Perugia (IT), Shandong Normal University (CN), University of Manchester (GB), Guangxi Normal University (CN), China University of Geosciences (CN), Huangshan University (CN), Chengdu University of Technology (CN), Joint Institute for Nuclear Research (RU), University of Jinan (CN), Henan University of Technology (CN), University of Bristol (GB), Wuhan University (CN), Zhengzhou University (CN), University of Oxford (GB), Central China Normal University (CN), National Centre for Nuclear Research (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Helmholtz Institute Mainz (DE), Istinye University (TR), Institute of Modern Physics (CN), Jilin Medical University (CN), Institute of High Energy Physics (CN), Shanxi University of Traditional Chinese Medicine (CN), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Piedmont University (US), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), University of Business and Technology (SA), Hebei University (CN), Budker Institute of Nuclear Physics (RU), China Center of Advanced Science and Technology (CN), University of Turin (IT), Indiana University (US), Chung-Ang University (KR), Near East University (CY), University of La Serena (CL), Carnegie Mellon University (US), Henan Normal University (CN), Zhejiang University (CN), Lanzhou University (CN), Renmin University of China (CN), Suranaree University of Technology (TH), Beihang University (CN), Nanjing University (CN), Ruhr University Bochum (DE), University of South China (CN), Shanxi Normal University (CN), Tsinghua University (CN)
U.S. Department of Energy, Strong, National Research Foundation, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Chinese Academy of Sciences, National Research Foundation of Korea, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Istituto Nazionale di Fisica Nucleare, Shanghai Key Laboratory for Particle Physics and Cosmology, Science and Technology Facilities Council, Institute of High Energy Physics
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