Measurement of Born cross sections of $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ and search for charmonium(-like) states at $$ \sqrt{s} $$ = 3.51–4.95 GeV

A bstract Using e + e − collision data collected by the BESIII detector at BEPCII corresponding to an integrated luminosity of 30 fb − 1 , we measure Born cross sections and effective form factors for the process $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> at forty-five center-of-mass energies between 3.51 and 4.95 GeV. The dressed cross section is fitted, assuming a power-law function plus a charmonium(-like) state, i.e., ψ (3770), ψ (4040), ψ (4160), ψ (4230), ψ (4360), ψ (4415) or ψ (4660). No significant charmonium(-like) state decaying into $$ {\Xi}^0{\overline{\Xi}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> is observed. Upper limits at the 90% confidence level on the product of the branching fraction and the electronic partial width are provided for each decay. In addition, ratios of the Born cross sections and the effective form factors for $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> and $$ {e}^{+}{e}^{-}\to {\Xi}^{-}{\overline{\Xi}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> </mml:math> are also presented to test isospin symmetry and the vector meson dominance model.

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Journal
Journal of High Energy Physics
Published
2024-11-08
DOI
https://doi.org/10.1007/jhep11(2024)062
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3
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Particle physics theoretical and experimental studies
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article
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Measurement of Born cross sections of $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ and search for charmonium(-like) states at $$ \sqrt{s} $$ = 3.51–4.95 GeV

K. Sun, K. Goetzen, L. B. Guo, W. M. Liu et al.
3 citations
Journal of High Energy Physics
Particle physics theoretical and experimental studies
1.98
article

Measurement of Born cross sections of $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ and search for charmonium(-like) states at $$ \sqrt{s} $$ = 3.51–4.95 GeV

K. Sun, K. Goetzen, L. B. Guo, W. M. Liu, Q. M. Li, Z. Y. Chen, Y. N. Wang, W. D. Li, J. Jackson, Z. C. Zhou, G. B. Sun, H. Liu, F. C., Y. S. Huang, T. T. Han, J. P. Wang, J. K. Jiao, M. H. Liu, J. J. Wang, C. X. Yu, F. Stieler, Feng Li, L. Yan, X. Y. Shan, M. H. Ye, X. M. Zhang, T. J. Zhu, V. Khachatryan, N. Kumar, C. Z. Yuan, F. Z. Qi, H. Q. Zhang, W. P. Wang, I. Garzia, Y. Z., T. J. Wang, Y. H. Fan, L. J. Li, Y. P. Guo, M. Kavatsyuk, Z. X. Meng, M. Y. Dong, Q. J. Xu, M. Kuessner, M. Scodeggio, T. Liu, Yilan Liao, M. Maggiora, X. T. Huang, G. Wilkinson, J. H. Zou, Z. D. Zhang, F. Hanisch, Jingfeng Sun, M. Wolke, Yaqian Wang, P. C. Hong, X. D. Yu, N. Berger, T. J. Jiang, I. Uman, L. P. Zhou, H. B. Jiang, C. Chen, S. Janchiv, T. Li, B. L. Zhang, G. S. Huang, B. X. Zhang, Q. T. Tao, S. N. Ruan, M. M., A. Limphirat, L. C. Liu, G. Chelkov, X. Wang, S. Kabana, Lei Zhao, Y. H. Zhang, S. J. Zhao, Y. F. Liang, Cheng Li, Z. Y. Zhang, W. D. Niu, T. T. Lei, Y. Y. Ji, W. M. Song, X. P. 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Ding, S. L. Chen, Z. W. Ge, H. -R. Bao, B. X. Yu, D. Bettoni, I. B. Nikolaev, J. Fu, B. Liu, Y. Zeng, X. Wu, C. Wu, Z. S. Xu, Z. H. Lei, C. D. Fu, Bo Wang, Y. Pan, X. Jia
article en
3 citations

Abstract

A bstract Using e + e − collision data collected by the BESIII detector at BEPCII corresponding to an integrated luminosity of 30 fb − 1 , we measure Born cross sections and effective form factors for the process $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> at forty-five center-of-mass energies between 3.51 and 4.95 GeV. The dressed cross section is fitted, assuming a power-law function plus a charmonium(-like) state, i.e., ψ (3770), ψ (4040), ψ (4160), ψ (4230), ψ (4360), ψ (4415) or ψ (4660). No significant charmonium(-like) state decaying into $$ {\Xi}^0{\overline{\Xi}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> is observed. Upper limits at the 90% confidence level on the product of the branching fraction and the electronic partial width are provided for each decay. In addition, ratios of the Born cross sections and the effective form factors for $$ {e}^{+}{e}^{-}\to {\Xi}^0{\overline{\Xi}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> and $$ {e}^{+}{e}^{-}\to {\Xi}^{-}{\overline{\Xi}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Ξ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> </mml:math> are also presented to test isospin symmetry and the vector meson dominance model.

Journal of High Energy PhysicsVol. 2024(11)
Goethe University Frankfurt (DE), University of Science and Technology Liaoning (CN), Liaoning University (CN), Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT), Uppsala University (SE), University of Science and Technology of China (CN), University of Hawaii System (US), Central South University (CN), Guangxi University (CN), Nanjing Normal University (CN), Liaoning Normal University (CN), North China Electric Power University (CN), Moscow Institute of Physics and Technology (RU), Shandong University (CN), Sun Yat-sen University (CN), COMSATS University Islamabad (PK), 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), Shanxi University (CN), Shanghai Jiao Tong University (CN), Yantai University (CN), University of Tarapacá (CL), South China Normal University (CN), Novosibirsk State University (RU), 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), Indian Institute of Technology Madras (IN), Fudan University (CN), Inner Mongolia University (CN), University of Perugia (IT), Kurchatov Institute (RU), Shandong Normal University (CN), University of Manchester (GB), Guangxi Normal University (CN), China University of Geosciences (CN), Huangshan University (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), Soochow University (CN), University of Oxford (GB), Central China Normal University (CN), Bridge University (SS), National Centre for Nuclear Research (PL), Institute of Physics and Technology (MN), Institute of Particle Physics (CA), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Helmholtz Institute Mainz (DE), Indiana University Bloomington (US), Istinye University (TR), Siberian Branch of the Russian Academy of Sciences (RU), Institute of Modern Physics (CN), Institute of Nuclear and Particle Physics (GR), 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), Bristol Robotics Laboratory (GB), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), Hebei University (CN), Budker Institute of Nuclear Physics (RU), École Polytechnique Fédérale de Lausanne (CH), China Center of Advanced Science and Technology (CN), University of Turin (IT), Indiana University (US), Chung-Ang University (KR), Near East University (CY), Carnegie Mellon University (US), Henan Normal University (CN), Zhejiang University (CN), Lanzhou University (CN), Southeast 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, University of the Punjab, Yantai University, Strong, National Research Foundation, Deutsche Forschungsgemeinschaft, Rijksuniversiteit Groningen, Swedish Foundation for International Cooperation in Research and Higher Education, National Natural Science Foundation of China, Chinese Academy of Sciences, National Research Foundation of Korea, University of Jinan, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Zhengzhou University, University of Science and Technology Liaoning, Zhejiang University, Università degli Studi del Piemonte Orientale, Università degli Studi di Torino, Wuhan University, Uppsala Universitet, Yunnan University, University of South China, University of Science and Technology of China, Istituto Nazionale di Fisica Nucleare, Higher Education Discipline Innovation Project, CAS Center for Excellence in Particle Physics, Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of High Energy Physics
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