Study of e+e−→ γϕJ/ψ from s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 4.600 to 4.951 GeV

被引:0
作者
M. Ablikim
M. N. Achasov
P. Adlarson
M. Albrecht
R. Aliberti
A. Amoroso
M. R. An
Q. An
Y. Bai
O. Bakina
R. Baldini Ferroli
I. Balossino
Y. Ban
V. Batozskaya
D. Becker
K. Begzsuren
N. Berger
M. Bertani
D. Bettoni
F. Bianchi
E. Bianco
J. Bloms
A. Bortone
I. Boyko
R. A. Briere
A. Brueggemann
H. Cai
X. Cai
A. Calcaterra
G. F. Cao
N. Cao
S. A. Cetin
J. F. Chang
W. L. Chang
G. R. Che
G. Chelkov
C. Chen
Chao Chen
G. Chen
H. S. Chen
M. L. Chen
S. J. Chen
S. M. Chen
T. Chen
X. R. Chen
X. T. Chen
Y. B. Chen
Z. J. Chen
W. S. Cheng
S. K. Choi
机构
[1] Institute of High Energy Physics,Instituto de Alta Investigación
[2] Beihang University,Turkish Accelerator Center Particle Factory Group
[3] Beijing Institute of Petrochemical Technology,Key Laboratory of Nuclear Physics and Ion
[4] Bochum Ruhr-University,beam Application (MOE) and Institute of Modern Physics
[5] Carnegie Mellon University,State Key Laboratory of Nuclear Physics and Technology
[6] Central China Normal University,School of Physics and Electronics
[7] Central South University,Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter
[8] China Center of Advanced Science and Technology,Frontiers Science Center for Rare Isotopes
[9] China University of Geosciences,Lanzhou Center for Theoretical Physics
[10] COMSATS University Islamabad,Department of Mathematical Sciences
[11] Lahore Campus,undefined
[12] Fudan University,undefined
[13] G.I. Budker Institute of Nuclear Physics SB RAS (BINP),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 of Science and Technology,undefined
[22] Henan University of Technology,undefined
[23] Huangshan College,undefined
[24] Hunan Normal University,undefined
[25] Hunan University,undefined
[26] Indian Institute of Technology Madras,undefined
[27] Indiana University,undefined
[28] INFN Laboratori Nazionali di Frascati,undefined
[29] INFN Sezione di Perugia,undefined
[30] University of Perugia,undefined
[31] INFN Sezione di Ferrara,undefined
[32] University of Ferrara,undefined
[33] Institute of Modern Physics,undefined
[34] Institute of Physics and Technology,undefined
[35] Universidad de Tarapacá,undefined
[36] Jilin University,undefined
[37] Johannes Gutenberg University of Mainz,undefined
[38] Joint Institute for Nuclear Research,undefined
[39] Justus-Liebig-Universitaet Giessen,undefined
[40] II. Physikalisches Institut,undefined
[41] Lanzhou University,undefined
[42] Liaoning Normal University,undefined
[43] Liaoning University,undefined
[44] Nanjing Normal University,undefined
[45] Nanjing University,undefined
[46] Nankai University,undefined
[47] National Centre for Nuclear Research,undefined
[48] North China Electric Power University,undefined
[49] Peking University,undefined
[50] Qufu Normal University,undefined
关键词
-; Experiments; Exotics; Quarkonium; Spectroscopy;
D O I
10.1007/JHEP01(2023)132
中图分类号
学科分类号
摘要
Using data samples with an integrated luminosity of 6.4 fb−1 collected by the BESIII detector operating at the BEPCII storage ring, the process of e+e− → γϕJ/ψ is studied. The processes of e+e− → ϕχc1,c2, χc1,c2 → γJ/ψ are observed with a significance of more than 10σ. The s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document}-dependent cross section of e+e− → ϕχc1,c2 is measured between 4.600 and 4.951 GeV, and evidence of a resonance structure is found for the first time in the ϕχc2 process. We also search for the processes of e+e− → γX(4140), γX(4274) and γX(4500) via the γϕJ/ψ final state, but no obvious structures are found. The upper limits on the production cross section times the branching fraction for these processes at the 90% confidence level are reported.
引用
收藏
相关论文
共 23 条
  • [1] Kwong W(1987)(3915) Ann. Rev. Nucl. Part. Sci. 37 325-undefined
  • [2] Rosner JL(2020)(4500) Phys. Rept. 873 1-undefined
  • [3] Quigg C(2016)(4700) Phys. Rept. 639 1-undefined
  • [4] Brambilla N(2016)(4140) Nucl. Phys. A 954 365-undefined
  • [5] Chen H-X(2008)(4274) Eur. Phys. J. C 58 399-undefined
  • [6] Chen W(2017)(4500) Eur. Phys. J. C 77 78-undefined
  • [7] Liu X(2017)(4700) Eur. Phys. J. C 77 160-undefined
  • [8] Zhu S-L(2017)undefined Radiat. Detect. Technol. Methods 1 13-undefined
  • [9] Karliner M(2017)undefined Radiat. Detect. Technol. Methods 1 15-undefined
  • [10] Rosner JL(2001)undefined Nucl. Instrum. Meth. A 462 152-undefined