Measurement of Γee×Bμμ for ψ(2S) Meson | Sciact - CRIS-system of Boreskov Institute of Catalysis

Measurement of Γee×Bμμ for ψ(2S) Meson Full article

Common

Language: Английский, Genre: Full article,
Status: Published, Source type: Original

Journal

Physics Letters B
ISSN: 0370-2693

Output data

Year: 2018, Volume: 781, Pages: 174-181 Pages count : 8 DOI: 10.1016/j.physletb.2018.03.079

Tags

ψ(2S) meson; Leptonic width; Branching fraction

Authors

Anashin V.V. ¹ , Anchugov O.V. ¹ , Aulchenko V.M. ^1,2 , Baldin E.M. ^1,2 , Baranov G.N.

^1,3 , Barladyan A.K. ¹ , Barnyakov A.Yu. ^1,2 , Barnyakov M.Yu. ^1,2 , Baru S.E. ^1,2 , Basok I.Yu. ¹ , Batrakov A.M. ¹ , Bekhtenev E.A. ¹ , Blinov A.E. ^1,2 , Blinov V.E. ^1,2,3 , Bobrov A.V. ^1,2 , Bobrovnikov V.S. ^1,2 , Bogomyagkov A.V.

^1,2 , Bondar A.E. ^1,2 , Buzykaev A.R. ^1,2 , Cheblakov P.B. ^1,2 , Dorohov V.L.

^1,3 , Eidelman S.I. ^1,2 , Grigoriev D.N. ^1,2,3 , Glukhov S.A. ^1,2 , Karnaev S.E. ¹ , Karpov G.V. ¹ , Karpov S.V. ¹ , Karukina K.Yu. ^1,3 , Kashtankin D.P. ¹ , Kharlamova T.A.

¹ , Kiselev V.A. ¹ , Kolmogorov V.V. ¹ , Kononov S.A. ^1,2 , Kotov K.Yu. ¹ , Krasnov A.A. ¹ , Kravchenko E.A. ^1,2 , Kudryavtsev V.N. ^1,2 , Kulikov V.F. ^1,2 , Kurkin G.Ya. ^1,3 , Kuyanov I.A. ¹ , Kuper E.A. ^1,2 , Levichev E.B.

^1,3 , Maksimov D.A. ^1,2 , Malyshev V.M. ¹ , Maslennikov A.L. ^1,2 , Meshkov O.I. ^1,2 , Mishnev S.I. ¹ , Morozov I.A.

¹ , Morozov I.I. ^1,2 , Muchnoi N.Yu. ^1,2 , Nikitin S.A. ¹ , Nikolaev I.B. ^1,2 , Okunev I.N.

¹ , Onuchin A.P. ^1,2,3 , Oreshkin S.B. ¹ , Osipov A.A. ^1,2 , Ovtin I.V. ^1,3 , Peleganchuk S.V. ^1,2 , Pivovarov S.G. ^1,3 , Piminov P.A.

¹ , Petrov V.V. ¹ , Prisekin V.G. ^1,2 , Rezanova O.L. ^1,2 , Ruban A.A. ^1,2 , Savinov G.A. ¹ , Shamov A.G. ^1,2 , Shatilov D.N.

¹ , Shvedov D.A. ¹ , Shwartz B.A.

^1,2 , Simonov E.A. ¹ , Sinyatkin S.V.

¹ , Skrinsky A.N. ¹ , Sokolov A.V. ^1,2 , Sukhanov D.P. ¹ , Sukharev A.M. ^1,2 , Starostina E.V. ^1,2 , Talyshev A.A. ^1,2 , Tayursky V.A. ^1,2 , Telnov V.I. ^1,2 , Tikhonov Yu.A. ^1,2 , Todyshev K.Yu. ^1,2 , Tribendis A.G. ¹ , Tumaikin G.M. ¹ , Usov Yu.V. ¹ , Vorobiov A.I. ¹ , Zhilich V.N. ^1,2 , Zhukov A.A. ¹ , Zhulanov V.V. ^1,2 , Zhuravlev A.N.

^1,2

Affiliations

1	Budker Institute of Nuclear Physics
2	Novosibirsk National Research University
3	Novosibirsk State Technical University

The product of the electronic width of the ψ(2S) meson and the branching fraction of its decay to the muon pair was measured in the e+e− → ψ(2S) → μ+μ− process using nine data sets corresponding to an integrated luminosity of about 6.5 pb−1 collected with the KEDR detector at the VEPP-4M electron– positron collider: Гee × Bμμ = 19.3 ± 0.3 ± 0.5 eV. Adding the previous KEDR results on hadronic and leptonic channels, the values of the ψ(2S) electronic width were obtained under two assumptions: either with the assumption of lepton universality Гee = 2.279 ± 0.015 ± 0.042 keV or without it, summing up hadronic and three independent leptonic channels Гee = 2.282 ± 0.015 ± 0.042 keV.

Anashin V.V. , Anchugov O.V. , Aulchenko V.M. , Baldin E.M. , Baranov G.N. , Barladyan A.K. , Barnyakov A.Y. , Barnyakov M.Y. , Baru S.E. , Basok I.Y. , 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. , Karnaev S.E. , Karpov G.V. , Karpov S.V. , Karukina K.Y. , Kashtankin D.P. , Kharlamova T.A. , Kiselev V.A. , Kolmogorov V.V. , Kononov S.A. , Kotov K.Y. , Krasnov A.A. , Kravchenko E.A. , Kudryavtsev V.N. , Kulikov V.F. , Kurkin G.Y. , Kuyanov I.A. , Kuper E.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. , Muchnoi N.Y. , 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 Y.A. , Todyshev K.Y. , Tribendis A.G. , Tumaikin G.M. , Usov Y.V. , Vorobiov A.I. , Zhilich V.N. , Zhukov A.A. , Zhulanov V.V. , Zhuravlev A.N.
Measurement of Γee×Bμμ for ψ(2S) Meson
Physics Letters B. 2018. V.781. P.174-181. DOI: 10.1016/j.physletb.2018.03.079 WOS Scopus РИНЦ

Submitted:	Feb 1, 2018
Accepted:	Mar 28, 2018
Published online:	Apr 4, 2018
Published print:	Jun 10, 2018

Web of science	WOS:000435653100022
Scopus	2-s2.0-85044973616
Elibrary	35531996
AN	2018:706999