arxiv: 1012.1694 · v1 · ★pith:QTQ7CSO5new · submitted 2010-12-08 · ✦ hep-ex
Measurement of B(J/psi->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. Yu. Basok
This is my paper
show 75 more authors
I. V. Bedny
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
D. N. Shatilov
G. E. Pospelov
V. G. Prisekin
A. A. Ruban
V. K. Sandyrev
G. A. Savinov
A. G. Shamov
B. A. Shwartz
E. A. Simonov
S. V. Sinyatkin
Yu. I. Skovpen
A. N. Skrinsky
V. V. Smaluk
A. V. Sokolov
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
gammakedrphotonpsi-accountasymmetricbranchingcollected
read the original abstract
We present a study of the inclusive photon spectrum from 6.3 million J/psi decays collected with the KEDR detector at the VEPP-4M e+e- collider. We measure the branching fraction of the radiative decay J/psi -> eta_c gamma, eta_c width and mass. Taking into account an asymmetric photon line shape we obtain: M(eta_c) = (2978.1 +- 1.4 +- 2.0) MeV/c^2, Gamma(eta_c) = (43.5 +- 5.4 +- 15.8) MeV, B(J/psi->eta_c gamma) = (2.59 +- 0.16 +- 0.31)%$.
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.