Pis'ma v Zh. Èksper. Teoret. Fiz., 2007 Volume 85, Issue 8, Pages 429–434
(Mi jetpl1008)
This article is cited in
48 papers
FIELDS, PARTICLES, AND NUCLEI
Measurement of the $\tau$ lepton mass at KEDR detector
V. V. Anashin ,
V. M. Aul'chenko ,
E. M. Baldin ,
A. K. Barladyan ,
A. Yu. Barnyakov ,
M. Yu. Barnyakov ,
S. E. Baru ,
I. V. Bedny ,
O. L. Beloborodova ,
A. E. Blinov ,
V. E. Blinov ,
A. B. Bobrov ,
V. S. Bobrovnikov ,
A. V. Bogomyagkov ,
A. E. Bondar ,
D. V. Bondarev ,
A. R. Buzykaev ,
V. P. Cherepanov ,
S. I. Eidelman ,
Yu. M. Glukhovchenko ,
V. V. Gulevich ,
S. E. Karnaev ,
G. V. Karpov ,
S. V. Karpov ,
V. A. Kiselev ,
S. A. Kononov ,
K. Yu. Kotov ,
E. A. Kravchenko ,
E. V. Kremyanskaya ,
V. F. Kulikov ,
G. Ya. Kurkin ,
E. A. Kuper ,
E. V. Levichev ,
D. A. Maksimov ,
V. M. Malyshev ,
A. L. Maslennikov ,
A. S. Medvedko ,
O. I. Meshkov ,
S. E. Mishnev ,
I. I. Morozov ,
N. Yu. Muchnoi ,
V. V. Neufeld ,
S. A. Nikitin ,
I. B. Nikolaev ,
A. P. Onuchin ,
S. B. Oreshkin ,
I. O. Orlov ,
A. A. Osipov ,
S. V. Peleganchuk ,
S. S. Petrosyan ,
S. G. Pivovarov ,
P. A. Piminov ,
V. V. Petrov ,
A. O. Poluektov ,
G. E. Pospelov ,
V. G. Prisekin ,
A. A. Ruban ,
V. K. Sandyrev ,
G. A. Savinov ,
A. G. Shamov ,
D. N. Shatilov ,
E. I. Shubin ,
B. A. Shvartz ,
V. A. Sidorov ,
E. A. Simonov ,
S. V. Sinyatkin ,
Yu. I. Skovpen ,
A. N. Skrinsky ,
M. V. Struchalin ,
V. V. Smaluk ,
A. M. Soukharev ,
A. A. Talyshev ,
V. A. Tayurskii ,
V. I. Telnov ,
Yu. A. Tikhonov ,
K. Yu. Todyshev ,
G. M. Tumaikin ,
Yu. V. Usov ,
A. I. Vorobiov ,
A. N. Yushkov ,
V. N. Zhilich ,
A. N. Zhuravlev Budker Institute of Nuclear Physics RAS
Abstract:
A precise
$\tau$ lepton mass measurement performed at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the
$\tau^+\tau^-$ cross section behaviour around the production threshold. The result based on 6.7 pb
$^{-1}$ of data is
$m_\tau=1776.81^{+0.25}_{-0.23}\pm0.15$ MeV. Using 0.8 pb
$^{-1}$ of data collected at the
$\psi'$ peak we have also determined $\Gamma_{ee}\!\cdot\!B_{\tau\tau}(\psi')=9.0\pm2.6$ eV.
PACS:
13.20.Gd ,
14.60.Fg ,
29.20.-c ,
29.27.Hj Received: 05.03.2007
Language: English
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