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slides
Precison Measurements of the Mass, the Widths of
ψ
(
3770
)
\psi(3770)
ψ
(
3770
)
Resonance and the Cross Section
σ
[
e
+
e
−
→
ψ
(
3770
)
]
\sigma[e^+e^-\to \psi(3770)]
σ
[
e
+
e
−
→
ψ
(
3770
)]
at
E
c
m
=
3.7724
E_{\rm cm}=3.7724
E
cm
=
3.7724
GeV
Authors
Ablikim
Ablikim
+209 more
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Ablikim
Adam
Adams
Arbuzov
B. Xin
B.A. Zhuang
B.S. Zou
B.X. Zhang
B.Y. Zhang
Bacino
Bai
Berends
Besson
Besson
Bhanot
Briere
Buchmüller
C.C. Zhang
C.D. Fu
C.L. Luo
C.L. Wei
C.S. Gao
C.X. Liu
C.Z. Yuan
Chistov
Coan
Cronin-Hennessy
D.H. Wei
D.H. Zhang
D.L. Shen
D.P. Jin
D.X. Zhao
D.Y. Wang
Davies
Eichten
Eichten
Eichten
F. Liu
F. Lu
F. Shi
F. Yang
F.C. Ma
Fang Liu
G. Li
G. Rong
G.F. Xu
G.L. Tong
G.R. Lu
G.W. Yu
H. Qin
H.B. Li
H.B. Liao
H.F. Chen
H.H. Li
H.H. Liu
H.J. Lu
H.L. Ma
H.M. Hu
H.M. Liu
H.P. Peng
H.Q. Zheng
H.S. Chen
H.S. Sun
H.X. Chen
H.X. Yang
H.Y. Sheng
H.Y. Zhang
Heikkilä
Huang
J. Fang
J. Li
J. Liu
J. Nie
J. Yang
J.B. Jiao
J.B. Liu
J.C. Chen
J.F. Qiu
J.F. Sun
J.G. Bian
J.G. Lu
J.M. Yuan
J.P. Liu
J.P. Zheng
J.W. Zhang
J.W. Zhao
J.Y. Zhang
J.Z. Bai
Jin Chen
K.J. Zhu
K.L. He
Krasemann
L. Shang
L. Wang
L. Zhou
L.L. Ma
L.S. Wang
L.Y. Dong
L.Y. Shan
M. Ablikim
M. He
M. Wang
M.G. Zhao
M.H. Ye
M.L. Yan
Martin
N. Wu
N.D. Qi
N.F. Zhou
Ono
Ono
P. Wang
P.L. Wang
P.P. Zhao
Q.F. Dong
Q.J. Zhang
Q.M. Ma
Q.M. Zhu
R.G. Liu
R.Y. Li
Rapidis
Richardson
Rong
S. Jin
S.D. Gu
S.L. Zang
S.M. Li
S.P. Chi
S.S. Fang
S.S. Sun
S.X. Du
Schindler
T. Hu
W.D. Li
W.F. Wang
W.G. Li
W.R. Zhao
X. Cai
X. Shi
X. Tang
X.A. Zhuang
X.B. Ji
X.B. Ma
X.H. Mo
X.L. Li
X.M. Xia
X.M. Zhang
X.P. Huang
X.Q. Li
X.S. Jiang
X.T. Huang
X.X. Xie
X.Y. Shen
X.Y. Zhang
X.Z. Cui
Y. Ban
Y. Xu
Y. Yuan
Y. Zeng
Y.B. Chen
Y.C. Zhu
Y.F. Lai
Y.F. Liang
Y.F. Wang
Y.K. Heng
Y.L. Li
Y.N. Gao
Y.N. Guo
Y.P. Chu
Y.Q. Guo
Y.R. Tian
Y.S. Dai
Y.S. Zhu
Y.T. Gu
Y.X. Yang
Y.X. Ye
Y.Z. Sun
Yao
Yi Jin
Yingchun Zhu
Yiyun Zhang
Yu Zeng
Z. Wang
Z.A. Liu
Z.A. Zhu
Z.J. Sun
Z.P. Mao
Z.P. Zhang
Z.P. Zheng
Z.Q. Tan
Z.Q. Zhang
Z.Y. Deng
Z.Y. Ren
Z.Y. Wang
Z.Y. Yi
Z.Z. Du
Zhang
Zhe Wang
Zheng Wang
Publication date
22 December 2006
Publisher
'Elsevier BV'
Doi
Cite
View
on
arXiv
Abstract
By analyzing the
R
R
R
values measured at 68 energy points in the energy region between 3.650 and 3.872 GeV reported in our previous paper, we have precisely measured the mass, the total width, the leptonic width and the leptonic decay branching fraction of the
ψ
(
3770
)
\psi(3770)
ψ
(
3770
)
to be
M
ψ
(
3770
)
=
3772.4
±
0.4
±
0.3
{M}_{\psi(3770)}=3772.4 \pm 0.4 \pm 0.3
M
ψ
(
3770
)
=
3772.4
±
0.4
±
0.3
MeV,
Γ
ψ
(
3770
)
t
o
t
=
28.6
±
1.2
±
0.2
\Gamma_{\psi(3770)}^{\rm tot} = 28.6 \pm 1.2 \pm 0.2
Γ
ψ
(
3770
)
tot
=
28.6
±
1.2
±
0.2
MeV,
Γ
ψ
(
3770
)
e
e
=
279
±
11
±
13
\Gamma_{\psi(3770)}^{ee} = 279 \pm 11 \pm 13
Γ
ψ
(
3770
)
ee
=
279
±
11
±
13
eV and
B
[
ψ
(
3770
)
→
e
+
e
−
]
=
(
0.98
±
0.04
±
0.04
)
×
1
0
−
5
B[\psi(3770)\to e^+e^-]=(0.98\pm 0.04\pm 0.04)\times 10^{-5}
B
[
ψ
(
3770
)
→
e
+
e
−
]
=
(
0.98
±
0.04
±
0.04
)
×
1
0
−
5
, respectively, which result in the observed cross section
σ
o
b
s
[
e
+
e
−
→
ψ
(
3770
)
]
=
7.25
±
0.27
±
0.34
\sigma^{\rm obs}[e^+e^-\to \psi(3770)]=7.25\pm 0.27 \pm 0.34
σ
obs
[
e
+
e
−
→
ψ
(
3770
)]
=
7.25
±
0.27
±
0.34
nb at
s
=
3772.4
\sqrt{s}=3772.4
s
=
3772.4
MeV. We have also measured
R
u
d
s
=
2.121
±
0.023
±
0.084
R_{\rm uds}=2.121\pm 0.023 \pm 0.084
R
uds
=
2.121
±
0.023
±
0.084
for the continuum light hadron production in the region from 3.650 to 3.872 GeV.Comment: 5 pages, 2 figure
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