Measurement of the cross sections of e+e−→K−Ξ¯+Λ/Σ0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {e}^{+}{e}^{-}\to {K}^{-}{\overline{\Xi}}^{+}\Lambda /{\Sigma}^0 $$\end{document} at center-of-mass energies between 3.510 and 4.914 GeV

被引：0

作者：

M. Ablikim ^{[1
]}

M. N. Achasov ^{[4
]}

P. Adlarson ^{[88
]}

O. Afedulidis ^{[81
]}

X. C. Ai ^{[3
]}

R. Aliberti ^{[86
]}

A. Amoroso ^{[38
]}

Q. An ^{[78
]}

Y. Bai ^{[80
]}

O. Bakina ^{[75
]}

I. Balossino ^{[61
]}

Y. Ban ^{[60
]}

H.-R. Bao ^{[39
]}

V. Batozskaya ^{[31
]}

K. Begzsuren ^{[49
]}

N. Berger ^{[93
]}

M. Berlowski ^{[67
]}

M. Bertani ^{[1
]}

D. Bettoni ^{[47
]}

F. Bianchi ^{[35
]}

E. Bianco ^{[38
]}

A. Bortone ^{[47
]}

I. Boyko ^{[28
]}

R. A. Briere ^{[31
]}

A. Brueggemann ^{[78
]}

H. Cai ^{[80
]}

X. Cai ^{[78
]}

A. Calcaterra ^{[80
]}

G. F. Cao ^{[78
]}

N. Cao ^{[80
]}

S. A. Cetin ^{[39
]}

J. F. Chang ^{[5
]}

G. R. Che ^{[72
]}

G. Chelkov ^{[82
]}

C. Chen ^{[1
]}

C. H. Chen ^{[61
]}

Chao Chen ^{[28
]}

G. Chen ^{[1
]}

H. S. Chen ^{[67
]}

H. Y. Chen ^{[1
]}

M. L. Chen ^{[67
]}

S. J. Chen ^{[65
]}

S. L. Chen ^{[1
]}

S. M. Chen ^{[61
]}

T. Chen ^{[46
]}

X. R. Chen ^{[39
]}

X. T. Chen ^{[87
]}

Y. B. Chen ^{[46
]}

Y. Q. Chen ^{[9
]}

Z. J. Chen ^{[58
]}

机构：

[1] Institute of High Energy Physics,Instituto de Alta Investigación

[2] Beihang University,Key Laboratory of Nuclear Physics and Ion

[3] Bochum Ruhr-University,beam Application (MOE) and Institute of Modern Physics

[4] Budker Institute of Nuclear Physics SB RAS (BINP),State Key Laboratory of Nuclear Physics and Technology

[5] Carnegie Mellon University,School of Physics and Electronics

[6] Central China Normal University,Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter

[7] Central South University,MOE Frontiers Science Center for Rare Isotopes

[8] China Center of Advanced Science and Technology,Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, and Key Laboratory for Quantum Theory and Applications of MoE

[9] China University of Geosciences,Department of Mathematical Sciences

[10] Chung-Ang University,School of Physics

[11] COMSATS University Islamabad,undefined

[12] Lahore Campus,undefined

[13] Fudan University,undefined

[14] GSI Helmholtzcentre for Heavy Ion Research GmbH,undefined

[15] Guangxi Normal University,undefined

[16] Guangxi University,undefined

[17] Hangzhou Normal University,undefined

[18] Hebei University,undefined

[19] Helmholtz Institute Mainz,undefined

[20] Henan Normal University,undefined

[21] Henan University,undefined

[22] Henan University of Science and Technology,undefined

[23] Henan University of Technology,undefined

[24] Huangshan College,undefined

[25] Hunan Normal University,undefined

[26] Hunan University,undefined

[27] Indian Institute of Technology Madras,undefined

[28] Indiana University,undefined

[29] INFN Laboratori Nazionali di Frascati,undefined

[30] INFN Sezione di Perugia,undefined

[31] University of Perugia,undefined

[32] INFN Sezione di Ferrara,undefined

[33] University of Ferrara,undefined

[34] Inner Mongolia University,undefined

[35] Institute of Modern Physics,undefined

[36] Institute of Physics and Technology,undefined

[37] Universidad de Tarapacá,undefined

[38] Jilin University,undefined

[39] Johannes Gutenberg University of Mainz,undefined

[40] Joint Institute for Nuclear Research,undefined

[41] Justus-Liebig-Universitaet Giessen,undefined

[42] II. Physikalisches Institut,undefined

[43] Lanzhou University,undefined

[44] Liaoning Normal University,undefined

[45] Liaoning University,undefined

[46] Nanjing Normal University,undefined

[47] Nanjing University,undefined

[48] Nankai University,undefined

[49] National Centre for Nuclear Research,undefined

[50] North China Electric Power University,undefined

来源：

Journal of High Energy Physics | / 2024卷 / 7期

关键词：

-; Experiments; QCD; Particle and Resonance Production; Branching fraction;

D O I：

10.1007/JHEP07(2024)258

中图分类号：

学科分类号：

摘要：

Using e+e− collision data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 3.510 and 4.914 GeV, corresponding to an integrated luminosity of 25 fb−1, we measure the Born cross sections for the process e+e−→K−Ξ¯+Λ/Σ0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {e}^{+}{e}^{-}\to {K}^{-}{\overline{\Xi}}^{+}\Lambda /{\Sigma}^0 $$\end{document} at thirty-five energy points with a partial-reconstruction strategy. By fitting the dressed cross sections of e+e−→K−Ξ¯+Λ/Σ0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {e}^{+}{e}^{-}\to {K}^{-}{\overline{\Xi}}^{+}\Lambda /{\Sigma}^0 $$\end{document}, evidence for ψ4160→K−Ξ¯+Λ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \psi (4160)\to {K}^{-}{\overline{\Xi}}^{+}\Lambda $$\end{document} is found for the first time with a significance of 4.4σ, including systematic uncertainties. No evidence for other possible resonances is found. In addition, the products of electronic partial width and branching fraction for all assumed resonances decaying into K−Ξ¯+Λ/Σ0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {K}^{-}{\overline{\Xi}}^{+}\Lambda /{\Sigma}^0 $$\end{document} are determined.

引用

共 50 条

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M. Ablikim
M. N. Achasov
P. Adlarson
X. C. Ai
R. Aliberti
A. Amoroso
M. R. An
Q. An
Y. Bai
O. Bakina
I. Balossino
Y. Ban
V. Batozskaya
K. Begzsuren
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M. Berlowski
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H. Cai
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Chao Chen
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T. Chen
X. R. Chen
X. T. Chen
Y. B. Chen
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[2] Measurement of Born cross section of e+e−→Σ+Σ¯−\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {e}^{+}{e}^{-}\to {\Sigma}^{+}{\overline{\Sigma}}^{-} $$\end{document} at center-of-mass energies between 3.510 and 4.951 GeV
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