Open Access
First Observation of theM 1 ψ ( 3686 ) → γ η c ( 2 S )
M. ABLIKIM
,
M. N. ACHASOV
,
D. J. Ambrose
,
F. F. An
,
Q. An
,
Z. H. An
,
J. Z. BAI
,
Y. BAN
,
J. Becker
,
N. Berger
,
M. Bertani
,
J. M. Bian
,
E. Boger
,
O. Bondarenko
,
I. Boyko
,
R. A. Briere
,
V. Bytev
,
X Cai
,
A. Calcaterra
,
G. F. Cao
,
J. F. Chang
,
G. Chelkov
,
G. Chen
,
H. S. Chen
,
J. C. Chen
,
M L Chen
,
S J Chen
,
Y. Chen
,
Y.-B. Chen
,
H.-P. Cheng
,
Y. P. CHU
,
D Cronin-Hennessy
,
H. L. Dai
,
J. P. Dai
,
D. Dedovich
,
Z. Y. DENG
,
A. DENIG
,
I. Denysenko
,
M. Destefanis
,
W. M. Ding
,
Y. Ding
,
L. Y. Dong
,
M. Y. Dong
,
S. X. DU
,
J. Fang
,
S. S. Fang
,
L. Fava
,
F. Feldbauer
,
C. Q. Feng
,
R. B. Ferroli
,
C. D. FU
,
J. L. Fu
,
Y. Gao
,
C. Geng
,
K. Goetzen
,
W. X. Gong
,
W. Gradl
,
M. GRECO
,
M. H. Gu
,
Y. T. Gu
,
Y.H. Guan
,
A. Q. Guo
,
L. B. GUO
,
Y. P. Guo
,
Y. L. Han
,
X. Q. Hao
,
F. A. HARRIS
,
K. L. HE
,
M. He
,
Z.Y. He
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T. Held
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Y. K. HENG
,
Z. L. Hou
,
H. M. HU
,
J. F. Hu
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T. Hu
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B. Huang
,
G. M. Huang
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J.‐S. Huang
,
X.-T. Huang
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Y. P. Huang
,
T. Hussain
,
C. S. Ji
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Q. Ji
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X. B. Ji
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X. L. Ji
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L. K. Jia
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L.L. Jiang
,
X. S. Jiang
,
J. B. JIAO
,
Z Jiao
,
D. P. JIN
,
S. Jin
,
F. F. Jing
,
N. KALANTAR-NAYESTANAKI
,
M. Kavatsyuk
,
W. Kuehn
,
W. Lai
,
J. S. LANGE
,
J. K. C. Leung
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C. H. Li
,
Cheng Li
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Cui Li
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D. M. Li
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F. Li
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G. Li
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H. B. Li
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J.-C. Li
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K Li
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Lei Li
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N. B. Li
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Q. J. LI
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S.‐L. Li
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W. D. LI
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W. G. LI
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X. L. Li
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X. N. LI
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X. Q. Li
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X. R. Li
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Z. B. LI
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H. Liang
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Y. F. Liang
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Y T Liang
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G. R. Liao
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X. T. Liao
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B. J. LIU
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C. L. Liu
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C. X. LIU
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C. Y. Liu
,
F. H. Liu
,
Fang Liu
,
Fang Liu
,
Feng Liu
,
H Liu
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H. Liu
,
H. B. LIU
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H. H. Liu
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H. M. LIU
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H.-W. Liu
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J.-P. LIU
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K. Y. Liu
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Kai Liu
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Kun Liu
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P. L. Liu
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S. B. Liu
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X. Liu
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X. H. Liu
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Y Liu
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Y. Liu
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Y. B. Liu
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Z. A. LIU
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Zhiqiang Liu
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Zhiqing Liu
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H. Loehner
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G. R. LU
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H. J. Lu
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J. G. Lu
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Q. W. Lu
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X R Lü
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X. R. Lu
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Y.-p. Lu
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C. L. LUO
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M. X. Luo
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T. Luo
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X.‐L. Luo
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M. Lv
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C. L. Ma
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F. C. MA
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H. L. MA
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Q. M. MA
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S. Ma
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T. Ma
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X. Y. Ma
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Y Ma
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F. E. Maas
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M. Maggiora
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Q. A. Malik
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H. Mao
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Y. J. Mao
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Z. P. Mao
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J. G. MESSCHENDORP
,
J. Min
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T. J. Min
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R E Mitchell
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X. H. Mo
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C. Morales Morales
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C. Motzko
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N. Yu. MUCHNOI
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Y. Nefedov
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C. Nicholson
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I. B. NIKOLAEV
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Z. Ning
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S. L. Olsen
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Q. Ouyang
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S. Pacetti
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J. W. Park
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M. Pelizaeus
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H. P. Peng
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K. Peters
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J. L. PING
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R. G. PING
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R. Poling
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E. Prencipe
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C. S. J. Pun
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M. Qi
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S. Qian
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C F. Qiao
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X. S. Qin
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Y. Qin
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Z. H. Qin
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J. F. QIU
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K. H. Rashid
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G. RONG
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X. D. RUAN
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A. SARANTSEV
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B. D. Schaefer
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J. Schulze
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M. Shao
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C. P. Shen
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X. Y. SHEN
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H. Y. SHENG
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M. R. Shepherd
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X. Y. Song
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S. Spataro
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B. SPRUCK
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D. H. Sun
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G. X. Sun
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J. F. SUN
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S‐S. Sun
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X. D. Sun
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Y. J. Sun
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Y. Z. SUN
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Z. J. Sun
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Z. T. Sun
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C. J. Tang
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X. Tang
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E.H. Thorndike
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H. L. Tian
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D. TOTH
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M. Ullrich
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G. S. Varner
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B. Wang
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B. Q. Wang
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K. Wang
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L. L. WANG
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L. S. Wang
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M Wang
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P. Wang
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P. L. WANG
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Q. Wang
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Q. J. Wang
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S. G. WANG
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X. F. Wang
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X. L. Wang
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Y. D. Wang
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Y. F. Wang
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Y. Q. Wang
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Z Wang
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Z. Wang
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Z G Wang
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Z. Y. Wang
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D. H. Wei
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P. Weidenkaff
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Q. G. Wen
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S. P. Wen
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M Werner
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U. WIEDNER
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L.H. Wu
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N. Wu
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S. X. Wu
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Weinan Wu
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W. Wu
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Z. Wu
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L. G. Xia
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Z. J. Xiao
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Y. G. Xie
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Q. L. Xiu
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G. F. XU
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G.-M. Xu
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H. Xu
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Q. J. XU
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X. P. XU
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Y. Xu
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Z. R. Xu
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F. Xue
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Z. Xue
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L. Yan
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W. B. YAN
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Y. H. Yan
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H. X. YANG
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T. YANG
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Y. Yang
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Y. X. Yang
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H Ye
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M. Ye
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M. H. YE
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B.X. YU
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C. X. YU
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J. S. Yu
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L. Yu
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S.P. Yu
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C. Z. Yuan
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W.-L. Yuan
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Y. Yuan
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A. A. Zafar
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A. Zallo
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Y. Zeng
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B. X. ZHANG
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B. Y. ZHANG
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C. C. Zhang
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D. H. ZHANG
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H. H. ZHANG
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H. Y. Zhang
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J. Zhang
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J. G. ZHANG
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J. Q. Zhang
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J Y Zhang
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J. Z. Zhang
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L. Zhang
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S H Zhang
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T. R. Zhang
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X J. Zhang
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X. Y. Zhang
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Y Zhang
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Y. Zhang
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Y. H. Zhang
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Y. S. Zhang
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Z. P. Zhang
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Z. Y. Zhang
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G. Zhao
,
H. S. Zhao
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J. W. ZHAO
,
K. X. Zhao
,
Lei Zhao
,
Ling Zhao
,
M. G. ZHAO
,
Q. Zhao
,
S.J. Zhao
,
T. C. Zhao
,
X. H. Zhao
,
Y. B. Zhao
,
Z. G. ZHAO
,
B. Zheng
,
J. P. Zheng
,
Y. H. Zheng
,
Z. P. ZHENG
,
B. ZHONG
,
J. Zhong
,
L. Zhou
,
X. K. Zhou
,
X.-R. ZHOU
,
C. Zhu
,
K. Zhu
,
K. J. Zhu
,
S.-H. Zhu
,
X L Zhu
,
X. W. ZHU
,
Y. M. Zhu
,
Y. S. Zhu
,
Z. A. ZHU
,
J. Zhuang
,
B. S. ZOU
,
J. H. Zou
,
J. X. ZUO
Publication type: Journal Article
Publication date: 2012-07-24
scimago Q1
wos Q1
SJR: 2.856
CiteScore: 15.6
Impact factor: 9.0
ISSN: 00319007, 10797114
PubMed ID:
23006078
General Physics and Astronomy
Abstract
Using a sample of 106×10(6) ψ(3686) events collected with the BESIII detector at the BEPCII storage ring, we have made the first measurement of the M1 transition between the radially excited charmonium S-wave spin-triplet and the radially excited S-wave spin-singlet states: ψ(3686)→γη(c)(2S). Analyses of the processes ψ(3686)→γη(c)(2S) with η(c)(2S)→K(S)(0)K(±)π(∓) and K(+)K(-)π(0) give an η(c)(2S) signal with a statistical significance of greater than 10 standard deviations under a wide range of assumptions about the signal and background properties. The data are used to obtain measurements of the η(c)(2S) mass (M(η(c)(2S))=3637.6±2.9(stat)±1.6(syst) MeV/c(2)), width (Γ(η(c)(2S))=16.9±6.4(stat)±4.8(syst) MeV), and the product branching-fraction (B(ψ(3686)→γη(c)(2S))×B(η(c)(2S)→KKπ)=(1.30±0.20(stat)±0.30(syst))×10(-5)). Combining our result with a BABAR measurement of B(η(c)(2S)→KKπ), we find the branching fraction of the M1 transition to be B(ψ(3686)→γη(c)(2S))=(6.8±1.1(stat)±4.5(syst))×10(-4).
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ABLIKIM M. et al. First Observation of theM1Transitionψ(3686)→γηc(2S) // Physical Review Letters. 2012. Vol. 109. No. 4. 042003
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ABLIKIM M. et al. First Observation of theM1Transitionψ(3686)→γηc(2S) // Physical Review Letters. 2012. Vol. 109. No. 4. 042003
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@article{2012_ABLIKIM,
author = {M. ABLIKIM and M. N. ACHASOV and D. J. Ambrose and F. F. An and Q. An and Z. H. An and J. Z. BAI and Y. BAN and J. Becker and N. Berger and M. Bertani and J. M. Bian and E. Boger and O. Bondarenko and I. Boyko and R. A. Briere and V. Bytev and X Cai and A. Calcaterra and G. F. Cao and J. F. Chang and G. Chelkov and G. Chen and H. S. Chen and J. C. Chen and M L Chen and S J Chen and Y. Chen and Y.-B. Chen and H.-P. Cheng and Y. P. CHU and D Cronin-Hennessy and H. L. Dai and J. P. Dai and D. Dedovich and Z. Y. DENG and A. DENIG and I. Denysenko and M. Destefanis and W. M. Ding and Y. Ding and L. Y. Dong and M. Y. Dong and S. X. DU and J. Fang and S. S. Fang and L. Fava and F. Feldbauer and C. Q. Feng and R. B. Ferroli and others},
title = {First Observation of theM1Transitionψ(3686)→γηc(2S)},
journal = {Physical Review Letters},
year = {2012},
volume = {109},
publisher = {American Physical Society (APS)},
month = {jul},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.109.042003},
number = {4},
pages = {042003},
doi = {10.1103/PhysRevLett.109.042003}
}
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