arxiv: 1002.2071 · v2 · ★pith:UROEZIAJnew · submitted 2010-02-10 · ✦ hep-ex
Measurement of J/psi to eta_c gamma at KEDR
V.V. Anashin
,
V.M. Aulchenko
,
E.M. Baldin
,
A.K. Barladyan
,
A.Yu. Barnyakov
,
M.Yu. Barnyakov
,
S.E. Baru
,
I.V. Bedny
This is my paper
show 74 more authors
O.L. Beloborodova
A.E. Blinov
V.E. Blinov
A.V. Bobrov
V.S. Bobrovnikov
A.V. Bogomyagkov
A.E. Bondar
A.R. Buzykaev
S.I. Eidelman
Yu.M. Glukhovchenko
V.V. Gulevich
D.V. Gusev
S.E. Karnaev
G.V. Karpov
S.V. Karpov
T.A. Kharlamova
V.A. Kiselev
S.A. Kononov
K.Yu. Kotov
E.A. Kravchenko
V.F. Kulikov
G.Ya. Kurkin
E.A. Kuper
E.B. Levichev
D.A. Maksimov
V.M. Malyshev
A.L. Maslennikov
A.S. Medvedko
O.I. Meshkov
A.I. Milstein
S.I. Mishnev
I.I. Morozov
N.Yu. Muchnoi
V.V. Neufeld
S.A. Nikitin
I.B. Nikolaev
I.N. Okunev
A.P. Onuchin
S.B. Oreshkin
I.O. Orlov
A.A. Osipov
S.V. Peleganchuk
S.G. Pivovarov
P.A. Piminov
V.V. Petrov
A.O. Poluektov
I.N. Popkov
G.E. Pospelov
V.G. Prisekin
A.A. Ruban
V.K. Sandyrev
G.A. Savinov
A.G. Shamov
D.N. Shatilov
B.A. Shwartz
E.A. Simonov
S.V. Sinyatkin
Yu.I. Skovpen
A.N. Skrinsky
V.V. Smaluk
A.M. Sukharev
E.V. Starostina
A.A. Talyshev
V.A. Tayursky
V.I. Telnov
Yu.A. Tikhonov
K.Yu. Todyshev
G.M. Tumaikin
Yu.V. Usov
A.I. Vorobiov
A.N. Yushkov
V.N. Zhilich
V.V.Zhulanov
A.N. Zhuravlev
classification
✦ hep-ex
keywords
gammakedrbranchingcollectedcolliderdecaydecaysdetector
read the original abstract
We present a study of the inclusive photon spectra from 5.9 million J/psi decays collected with the KEDR detector at the VEPP-4M e+e- collider. We measure the branching fraction of radiative decay J/psi to eta_c gamma, eta_c width and mass. Our preliminary results are: M(eta_c) = 2979.4+-1.5+-1.9 MeV, G(eta_c) = 27.8+-5.1+-3.3 MeV, B(J/psi to eta_c gamma) = (2.34+-0.15+-0.40)%.
This paper has not been read by Pith yet.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.