Precise measurement of Ruds and R between 1.84 and 3.72 GeV at the KEDR detector

Precise measurement of Ruds and R between 1.84 and 3.72 GeV at the KEDR detector

The present work continues a series of the KEDR measurements of the R value that started in 2010 at the VEPP-4M e+e− collider. By combining new data with our previous results in this energy range we measured the values of Ruds and R at nine center-of-mass energies between 3.08 and 3.72 GeV. The tota...

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Veröffentlicht in:Physics letters. B 2019-01, Vol.788, p.42-51
Hauptverfasser: Anashin, V.V., Anchugov, O.V., Aulchenko, V.M., Baldin, E.M., Baranov, G.N., Barladyan, A.K., Barnyakov, A.Yu, Barnyakov, M.Yu, Baru, S.E., Basok, I.Yu, Batrakov, A.M., Bekhtenev, E.A., Blinov, A.E., Blinov, V.E., Bobrov, A.V., Bobrovnikov, V.S., Bogomyagkov, A.V., Bondar, A.E., Buzykaev, A.R., Cheblakov, P.B., Dorohov, V.L., Eidelman, S.I., Grigoriev, D.N., Glukhov, S.A., Kaminskiy, V.V., Karnaev, S.E., Karpov, G.V., Karpov, S.V., Karukina, K.Yu, Kashtankin, D.P., Kasyanenko, P.V., Kharlamova, T.A., Kiselev, V.A., Kolmogorov, V.V., Kononov, S.A., Kotov, K.Yu, Krasnov, A.A., 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.A., Morozov, I.I., 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., Savinov, G.A., Shamov, A.G., Shatilov, D.N., Shvedov, D.A., Shwartz, B.A., Simonov, E.A., Sinyatkin, S.V., Skrinsky, A.N., Sokolov, A.V., Sukhanov, D.P., Sukharev, A.M., Starostina, E.V., Talyshev, A.A., Tayursky, V.A., Telnov, V.I., Tikhonov, Yu.A., Todyshev, K.Yu, Tribendis, A.G., Tumaikin, G.M., Usov, Yu.V., Vorobiov, A.I., Zhilich, V.N., Zhukov, A.A., Zhulanov, V.V., Zhuravlev, A.N.
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Sprache:eng
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Zusammenfassung:The present work continues a series of the KEDR measurements of the R value that started in 2010 at the VEPP-4M e+e− collider. By combining new data with our previous results in this energy range we measured the values of Ruds and R at nine center-of-mass energies between 3.08 and 3.72 GeV. The total accuracy is about or better than 2.6% at most of energy points with a systematic uncertainty of about 1.9%. Together with the previous precise R measurement at KEDR in the energy range 1.84–3.05 GeV, it constitutes the most detailed high-precision R measurement near the charmonium production threshold.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2018.11.012