Author:
,Anashin V. V.,Anchugov O. V.,Andrianov A. V.,Astrelina K. V.,Aulchenko V. M.,Baldin E. M.,Baranov G. N.,Barladyan A. K.,Barnyakov A. Yu.,Barnyakov M. Yu.,Basok I. Yu.,Batrakov A. M.,Bekhtenev E. A.,Belikov O. V.,Berkaev D. E.,Blinov A. E.,Blinov V. E.,Blinov M. F.,Bobrov A. V.,Bobrovnikov V. S.,Bogomyagkov A. V.,Bolkhovityanov D. Yu.,Bondar A. E.,Buzykaev A. R.,Cheblakov P. B.,Dorohov V. L.,Emanov F. A.,Gambaryan V. V.,Grigoriev D. N.,Kaminskiy V. V.,Karnaev S. E.,Karpov G. V.,Karpov S. V.,Karukina K. Yu.,Kashtankin D. P.,Kasyanenko P. V.,Katcin A. A.,Kharlamova T. A.,Kiselev V. A.,Kononov S. A.,Krasnov A. A.,Kravchenko E. A.,Kudryavtsev V. N.,Kulikov V. F.,Kuyanov I. A.,Levichev E. B.,Logachev P. V.,Maksimov D. A.,Maltseva Yu. I.,Malyshev V. M.,Maslennikov A. L.,Meshkov O. I.,Mishnev S. I.,Morozov I. A.,Morozov I. I.,Nikiforov D. A.,Nikitin S. A.,Nikolaev I. B.,Okunev I. N.,Oreshkin S. B.,Osipov A. A.,Ovtin I. V.,Pavlenko A. V.,Peleganchuk S. V.,Piminov P. A.,Podgornov N. A.,Prisekin V. G.,Rezanova O. L.,Ruban A. A.,Savinov G. A.,Shamov A. G.,Shekhtman L. I.,Shvedov D. A.,Shwartz B. A.,Simonov E. A.,Sinyatkin S. V.,Skrinsky A. N.,Sokolov A. V.,Starostina E. V.,Sukhanov D. P.,Sukharev A. M.,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.
Abstract
Abstract
We present the study of the decay J/ψ → ρπ. The results are based on of 5.2 million J/ψ events collected by the KEDR detector at the VEPP-4M collider. The branching fractions are measured to be $$ \mathcal{B} $$
B
(J/ψ → ρπ) = (2.072 ± 0.017 ± 0.062) ∙ 10−2 and $$ \mathcal{B} $$
B
(J/ψ → π+π−π0) = (1.878 ± 0.013 ± 0.051) ∙ 10−2, where the first uncertainties are statistical and the second systematic. Our results are more precise than the previous relative measurements.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics