Parameters of charmonium states from KEDR

We report results of experiments performed with the KEDR detector at the VEPP-4M e+e- collider. They include final results for the mass and other parameters of the J/ψ, ψ(2S) and ψ(3770) and J/ψ → γηc branching fraction determination.

Note:

5 pages, 6 figures, PhiPsi 2013, International Workshop on e+e- collisions from Phi to Psi. September 9-12, 2013, Rome, Italy

14.40.Gx
13.66.De
13.20.Gd
Detector
charmonium
collider
KEDR
Novosibirsk Stor4
J/psi(3100): branching ratio
charmonium: electroproduction

References(9)

Figures(6)

[1]

Stockholm 1998, EPAC 98*, 400 (1998), Prepared for 6th European Particle Accelerator Conference (EPAC 98), Stockholm, Sweden, 22-26 Jun 1998

V. Anashin

[2]

The KEDR detector

V.V. Anashin
(
- Novosibirsk, IYF
)
,
V.M. Aulchenko
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)
,
E.M. Baldin
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)
,
A.K. Barladyan
(
- Novosibirsk, IYF
)
,
A.Yu. Barnyakov
(
- Novosibirsk, IYF
)

et al.

- Phys.Part.Nucl. 44 (2013) 657-702
•
DOI:
- 10.1134/S1063779613040035

[3]

Review of beam energy measurements at VEPP-4M collider: KEDR/VEPP-4M

V.E. Blinov
(
- Novosibirsk, IYF
)
,
A.V. Bogomyagkov
(
- Novosibirsk, IYF
)
,
N.Yu. Muchnoi
(
- Novosibirsk, IYF
)
,
S.A. Nikitin
(
- Novosibirsk, IYF
)
,
I.B. Nikolaev
(
- Novosibirsk, IYF
)

et al.

- Nucl.Instrum.Meth.A 598 (2009) 23-30
•
DOI:
- 10.1016/j.nima.2008.08.078

[4]

New precision measurement of the J / psi and psi-prime meson masses

KEDR

Collaboration

•

V.M. Aulchenko
(
- Novosibirsk, IYF
)

et al.

- Phys.Lett.B 573 (2003) 63-79
•
e-Print:
- hep-ex/0306050
•
DOI:
- 10.1016/j.physletb.2003.08.028

[5]

Review of Particle Physics (RPP)

J. Beringer
(
- LBL, Berkeley
)
,
J.F. Arguin
(
- LBL, Berkeley and
- Montreal U.
)
,
R.M. Barnett
(
- LBL, Berkeley
)
,
K. Copic
(
- LBL, Berkeley
)
,
O. Dahl
(
- LBL, Berkeley
)

et al.

- Phys.Rev.D 86 (2012) 010001
•
DOI:
- 10.1103/PhysRevD.86.010001

[6]

Measurement of the branching fractions for J/psi ---> l+ l-

CLEO

Collaboration

•

Z. Li
(
- Puerto Rico U., Mayaguez
)

et al.

- Phys.Rev.D 71 (2005) 111103
•
e-Print:
- hep-ex/0503027
•
DOI:
- 10.1103/PhysRevD.71.111103

[7]

Precision measurements of ${\cal B}[\psi(3686) \to \pi^+\pi^- J/\psi]$ and ${\cal B}[J/\psi\to l^+l^-]$

BESIII

Collaboration

•

M. Ablikim
(
- Beijing, Inst. High Energy Phys.
)

et al.

- Phys.Rev.D 88 (2013) 3, 032007
•
e-Print:
- 1307.1189
•
DOI:
- 10.1103/PhysRevD.88.032007

[8]

Measurement of \psi(3770) parameters

V.V. Anashin
(
- Novosibirsk, IYF
)
,
V.M. Aulchenko
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)
,
E.M. Baldin
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)
,
A.K. Barladyan
(
- Novosibirsk, IYF
)
,
A.Yu. Barnyakov
(
- Novosibirsk, IYF
)

et al.

- Phys.Lett.B 711 (2012) 292-300
•
e-Print:
- 1109.4205
•
DOI:
- 10.1016/j.physletb.2012.04.019

[9]

An attempt of a joint analysis of BABAR, BELLE, BES, CLEO and KEDR data for determination of ψ(3777) parameters. PhiPsi 2013, International Workshop on e+e- collisions from Phi to Psi. September 9-12, 2013, Rome, Italy. Poster session

A.G. Shamov