Measurement of $R$ between 1.84 and 3.05 GeV at the KEDR detector
24 Nov 2016
·
Anashin V. V.,
Aulchenko V. M.,
Baldin E. M.,
Barladyan A. K.,
Barnyakov A. Yu.,
Barnyakov M. Yu.,
Baru S. E.,
Basok I. Yu.,
Batrakov A. M.,
Blinov A. E.,
Blinov V. E.,
Bobrov A. V.,
Bobrovnikov V. S.,
Bogomyagkov A. V.,
Bondar A. E.,
Buzykaev A. R.,
Eidelman S. I.,
Grigoriev D. N.,
Glukhovchenko Yu. M.,
Karnaev S. E.,
Karpov G. V.,
Karpov S. V.,
Kasyanenko P. V.,
Kharlamova T. A.,
Kiselev V. A.,
Kolmogorov V. V.,
Kononov S. A.,
Kotov K. Yu.,
Kravchenko E. A.,
Kudryavtsev V. N.,
Kulikov V. F.,
Kurkin G. Ya.,
Kuyanov I. A.,
Levichev E. B.,
Maksimov D. A.,
Malyshev V. M.,
Maslennikov A. L.,
Meshkov O. I.,
Mishnev S. I.,
Morozov I. I.,
Muchnoi N. Yu.,
Neufeld V. V.,
Nikitin S. A.,
Nikolaev I. B.,
Okunev I. N.,
Onuchin A. P.,
Oreshkin S. B.,
Osipov A. A.,
Ovtin I. V.,
Peleganchuk S. V.,
Pivovarov S. G.,
Piminov P. A.,
Petrov V. V.,
Prisekin V. G.,
Rezanova O. L.,
Ruban A. A.,
Sandyrev V. K.,
Savinov G. A.,
Shamov A. G.,
Shatilov D. N.,
Shwartz B. A.,
Simonov E. A.,
Sinyatkin S. V.,
Skrinsky A. N.,
Sokolov A. V.,
Sukharev A. M.,
Starostina E. V.,
Talyshev A. A.,
Tayursky V. A.,
Telnov V. I.,
Tikhonov Yu. A.,
Todyshev K. Yu.,
Tumaikin G. M.,
Usov Yu. V.,
Vorobiov A. I.,
Zhilich V. N.,
Zhulanov V. V.,
Zhuravlev A. N.·
Using the KEDR detector at the VEPP-4M $e^+e^-$ collider, we have determined
the values of $R$ at thirteen points of the center-of-mass energy between 1.84
and 3.05 GeV. The achieved accuracy is about or better than $3.9\%$ at most of
the energy points with a systematic uncertainty less than $2.4\%$.
