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

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, 11, akademika Lavrentieva prospect, Novosibirsk, 630090, Russia
2	Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
3	Novosibirsk State Technical University, 20, Karl Marx prospect, Novosibirsk, 630092, Russia

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 AN OpenAlex

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
Chemical Abstracts:	2018:706999
OpenAlex:	W2785804509

DB	Citing
Scopus	2
Web of science	2
OpenAlex	1