Open Access
Open access
volume 87 issue 5 publication number 052007

Measurements of the branching fractions forJ/ψandψΛΛ¯π0andΛΛ¯η

M. ABLIKIM
M. N. ACHASOV
O. Albayrak
D. J. Ambrose
F. F. An
Q. An
J. Z. BAI
Y. BAN
J. Becker
J V Bennett
M. Bertani
J. M. Bian
E. Boger
O. Bondarenko
I. Boyko
R. A. Briere
V. Bytev
X Cai
O. Cakir
A. Calcaterra
G. F. Cao
S. A. Cetin
J. F. Chang
G. Chelkov
G. Chen
H. S. Chen
J. C. Chen
M L Chen
S J Chen
X. 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
C. Q. Feng
R. B. Ferroli
P. Friedel
C. D. 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
T. Guo
Y. P. Guo
Y. L. Han
F. A. HARRIS
K. L. HE
M. He
Z.Y. He
T. Held
Y. K. HENG
Z. L. Hou
C Hu
H. M. HU
J. F. Hu
T. Hu
G. M. Huang
G. S. HUANG
J.‐S. Huang
L. Huang
X.-T. Huang
Y Huang
Y. P. Huang
T. Hussain
C. S. Ji
Q. Ji
Q. P. Ji
X. B. Ji
X. L. Ji
L.L. Jiang
X. S. Jiang
J. B. JIAO
Z Jiao
D. P. JIN
S. Jin
F. F. Jing
N. KALANTAR-NAYESTANAKI
M. Kavatsyuk
B. Kopf
M. Kornicer
W. Kuehn
W. Lai
J. S. LANGE
M. Leyhe
C. H. Li
Cheng Li
Cui Li
D. M. Li
F. Li
G. Li
H. B. Li
J.-C. Li
K Li
Lei Li
Q. J. LI
S.‐L. Li
W. D. LI
W. G. LI
X. L. Li
X. N. LI
X. Q. Li
X. R. Li
Z. B. LI
H. Liang
Y. F. Liang
Y T Liang
G. R. Liao
X. T. Liao
D. Lin
B. J. LIU
C. L. Liu
C. X. LIU
F. H. Liu
Fang Liu
Fang Liu
Feng Liu
H Liu
H. Liu
H. B. LIU
H. H. Liu
H. M. LIU
H.-W. Liu
J.-P. LIU
K. Liu
K. Y. Liu
Kai Liu
P. L. Liu
Q. Liu
S. B. Liu
X. Liu
Y. B. Liu
Z. A. LIU
Zhiqiang Liu
Zhiqing Liu
H. Loehner
G. R. LU
H. J. Lu
J. G. Lu
Q. W. Lu
X R Lü
X. R. Lu
Y.-p. Lu
C. L. LUO
M. X. Luo
T. Luo
X.‐L. Luo
M. Lv
C. L. Ma
F. C. MA
H. L. MA
Q. M. MA
S. Ma
T. Ma
X. Y. Ma
F. E. Maas
M. Maggiora
Q. A. Malik
Y. J. Mao
Z. P. Mao
J. G. MESSCHENDORP
J. Min
T. J. Min
R E Mitchell
X. H. Mo
C. Morales Morales
N. Yu. MUCHNOI
H. Muramatsu
Y. Nefedov
C. Nicholson
I. B. NIKOLAEV
Z. Ning
S. L. Olsen
Q. Ouyang
S. Pacetti
J. W. Park
M. Pelizaeus
H. P. Peng
K. Peters
J. L. PING
R. G. PING
R. Poling
E. Prencipe
M. Qi
S. Qian
C F. Qiao
L-Q Qin
L. Q. Qin
X. S. Qin
Y. Qin
Z. H. Qin
J. F. QIU
K. H. Rashid
G. RONG
X. D. RUAN
A. SARANTSEV
B. D. Schaefer
M. Shao
C. P. Shen
X. Y. SHEN
H. Y. SHENG
M. R. Shepherd
X. Y. Song
S. Spataro
B. SPRUCK
D. H. Sun
G. X. Sun
J. F. SUN
S‐S. Sun
Y. J. Sun
Y. Z. SUN
Z. J. Sun
Z. T. Sun
C. J. Tang
X. Tang
I. Tapan
E.H. Thorndike
D. TOTH
M. Ullrich
G. S. Varner
B. Q. Wang
D. Wang
D. Y. Wang
K. Wang
L. L. WANG
L. S. Wang
M Wang
P. Wang
P. L. WANG
Q. J. Wang
S. G. WANG
X. F. Wang
X. L. Wang
Y. F. Wang
Z Wang
Z. Wang
Z G Wang
Z. Y. Wang
D. H. Wei
J.-B. Wei
P. Weidenkaff
Q. G. Wen
S. P. Wen
M Werner
U. WIEDNER
L.H. Wu
N. Wu
S. X. Wu
Weinan Wu
W. Wu
Z. Wu
L. G. Xia
Y. X. Xia
Z. J. Xiao
Y. G. Xie
Q. L. Xiu
G. F. XU
G.-M. Xu
Q. J. XU
Q. N. Xu
X. P. XU
Z. R. Xu
F. Xue
Z. Xue
L. Yan
W. B. YAN
Y. H. Yan
H. X. YANG
Y. Yang
Y. X. Yang
H Ye
M. Ye
M. H. YE
B.X. YU
C. X. YU
H. W. Yu
J. S. Yu
S.P. Yu
C. Z. Yuan
Y. Yuan
A. A. Zafar
A. Zallo
Y. Zeng
B. X. ZHANG
B. Y. ZHANG
C Zhang
C. C. Zhang
D. H. ZHANG
H. H. ZHANG
H. Y. Zhang
J. Q. Zhang
J. W. Zhang
J Y Zhang
J. Z. Zhang
Lili Zhang
R Zhang
S H Zhang
X J. Zhang
X. Y. Zhang
Y Zhang
Y. Zhang
Y. H. Zhang
Z. P. Zhang
Z. Y. Zhang
Zhenghao Zhang
G. Zhao
H. S. Zhao
J. W. ZHAO
K. X. Zhao
Lei Zhao
Ling Zhao
M. G. ZHAO
Q. Zhao
Q.-Z. Zhao
S.J. Zhao
T. C. Zhao
Y. B. Zhao
Z. G. ZHAO
B. Zheng
J. P. Zheng
Y. H. Zheng
B. ZHONG
Z. ZHONG
L. Zhou
X. K. Zhou
X.-R. ZHOU
C. Zhu
K. Zhu
K. J. Zhu
S.-H. Zhu
X L Zhu
Y. C. Zhu
Y. M. Zhu
Y. S. Zhu
Z. A. ZHU
J. Zhuang
B. S. ZOU
J. H. Zou
Publication typeJournal Article
Publication date2013-03-05
scimago Q1
wos Q1
SJR1.458
CiteScore9.0
Impact factor5.3
ISSN24700010, 24700029, 05562821, 10894918, 15507998, 15502368
Nuclear and High Energy Physics
Abstract
We report on a study of the isospin-violating and isospin-conserving decays of the J/ψ and ψ′ charmonium state to ΛΛ¯π0 and ΛΛ¯η, respectively. The data are based on 225 million J/ψ and 106 million ψ′ events that were collected with the BESIII detector. The most accurate measurement of the branching fraction of the isospin-violating process J/ψ→ΛΛ¯π0 is obtained, and the isospin-conserving processes J/ψ→ΛΛ¯η and ψ′→ΛΛ¯η are observed for the first time. The branching fractions are measured to be B(J/ψ→ΛΛ¯π0)=(3.78±0.27stat±0.30sys)×10-5, B(J/ψ→ΛΛ¯η)=(15.7±0.80stat±1.54sys)×10-5 and B(ψ′→ΛΛ¯η)=(2.48±0.34stat±0.19sys)×10-5. No significant signal events are observed for ψ′→ΛΛ¯π0 decay resulting in an upper limit of the branching fraction of B(ψ′→ΛΛ¯π0)<0.29×10-5 at the 90% confidence level. The two-body decay of J/ψ→Σ(1385)0Λ¯+c.c. is searched for, and the upper limit is B(J/ψ→Σ(1385)0Λ¯+c.c.)<0.82×10-5 at the 90% confidence level.
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ABLIKIM M. et al. Measurements of the branching fractions forJ/ψandψ′→ΛΛ¯π0andΛΛ¯η // Physical Review D. 2013. Vol. 87. No. 5. 052007
GOST all authors (up to 50) Copy
ABLIKIM M. et al. Measurements of the branching fractions forJ/ψandψ′→ΛΛ¯π0andΛΛ¯η // Physical Review D. 2013. Vol. 87. No. 5. 052007
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@article{2013_ABLIKIM,
author = {M. ABLIKIM and M. N. ACHASOV and O. Albayrak and D. J. Ambrose and F. F. An and Q. An and J. Z. BAI and Y. BAN and J. Becker and J V Bennett 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 O. Cakir and A. Calcaterra and G. F. Cao and S. A. Cetin 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 X. 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 C. Q. Feng and others},
title = {Measurements of the branching fractions forJ/ψandψ′→ΛΛ¯π0andΛΛ¯η},
journal = {Physical Review D},
year = {2013},
volume = {87},
publisher = {American Physical Society (APS)},
month = {mar},
url = {https://doi.org/10.1103/PhysRevD.87.052007},
number = {5},
pages = {052007},
doi = {10.1103/PhysRevD.87.052007}
}