Portal de Periódicos da CAPES

Measurement of R uds and R between 3.12 and 3.72 GeV at the KEDR detector

2015; Elsevier BV; Volume: 753; Linguagem: Inglês

10.1016/j.physletb.2015.12.059

1873-2445

В.В. Анашин, V.M. Aulchenko, E. M. Baldin, A.K. Barladyan, A. Barnyakov, M.Yu. Barnyakov, S.E. Baru, I.Yu. Basok, A. M. Batrakov, A. E. Blinov, V. E. Blinov, A.V. Bobrov, V. S. Bobrovnikov, A. Bogomyagkov, A. Bondar, A.A. Borodenko, А. Р. Бузыкаев, S.I. Eidelman, D.N. Grigoriev, Yu.M. Glukhovchenko, S.E. Karnaev, Г. В. Карпов, С. Карпов, P.V. Kasyanenko, T. Kharlamova, В. А. Киселев, V. V. Kolmogorov, S.A. Kononov, Khristian Kotov, E. A. Kravchenko, V. Kudryavtsev, V. Kulikov, G.Ya. Kurkin, I.A. Kuyanov, E.A. Kuper, E. Levichev, D.A. Maksimov, В. М. Малышев, A. L. Maslennikov, О. И. Мешков, S. I. Mishnev, И. И. Морозов, N. Yu. Muchnoi, V.V. Neufeld, S. A. Nikitin, I. B. Nikolaev, I.N. Okunev, A. P. Onuchin, S.B. Oreshkin, A. A. Osipov, I. Ovtin, S. V. Peleganchuk, Vladimir Petrov, S.G. Pivovarov, P. Piminov, V.G. Prisekin, O. L. Rezanova, A.A. Ruban, V.K. Sandyrev, G.A. Savinov, A.G. Shamov, D. Shatilov, B. Shwartz, E.A. Simonov, S. V. Sinyatkin, A.N. Skrinsky, A. 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, Y. Usov, A.I. Vorobiov, V. Zhilich, V.V. Zhulanov, А. Н. Журавлев,

Quantum Chromodynamics and Particle Interactions

Using the KEDR detector at the VEPP-4M $e^+e^-$ collider, we have measured the values of $R_{\text{uds}}$ and $R$ at seven points of the center-of-mass energy between 3.12 and 3.72 GeV. The total achieved accuracy is about or better than $3.3\%$ at most of energy points with a systematic uncertainty of about $2.1\%$. At the moment it is the most accurate measurement of $R(s)$ in this energy range.