Physics Letters B (Nov 2014)
Measurement of J/ψ→γηc decay rate and ηc parameters at KEDR
- V.V. Anashin,
- V.M. Aulchenko,
- E.M. Baldin,
- A.K. Barladyan,
- A.Yu. Barnyakov,
- M.Yu. Barnyakov,
- S.E. Baru,
- I.Yu. Basok,
- I.V. Bedny,
- A.E. Blinov,
- V.E. Blinov,
- A.V. Bobrov,
- V.S. Bobrovnikov,
- A.V. Bogomyagkov,
- A.E. Bondar,
- A.R. Buzykaev,
- S.I. Eidelman,
- Yu.M. Glukhovchenko,
- V.V. Gulevich,
- D.V. Gusev,
- S.E. Karnaev,
- G.V. Karpov,
- S.V. Karpov,
- T.A. Kharlamova,
- V.A. Kiselev,
- S.A. Kononov,
- K.Yu. Kotov,
- E.A. Kravchenko,
- V.F. Kulikov,
- G.Ya. Kurkin,
- E.A. Kuper,
- E.B. Levichev,
- D.A. Maksimov,
- V.M. Malyshev,
- A.L. Maslennikov,
- A.S. Medvedko,
- O.I. Meshkov,
- S.I. Mishnev,
- I.I. Morozov,
- N.Yu. Muchnoi,
- V.V. Neufeld,
- S.A. Nikitin,
- I.B. Nikolaev,
- I.N. Okunev,
- A.P. Onuchin,
- S.B. Oreshkin,
- I.O. Orlov,
- A.A. Osipov,
- S.V. Peleganchuk,
- S.G. Pivovarov,
- P.A. Piminov,
- V.V. Petrov,
- A.O. Poluektov,
- G.E. Pospelov,
- V.G. Prisekin,
- O.L. Rezanova,
- A.A. Ruban,
- V.K. Sandyrev,
- G.A. Savinov,
- A.G. Shamov,
- D.N. Shatilov,
- B.A. Shwartz,
- E.A. Simonov,
- S.V. Sinyatkin,
- A.N. Skrinsky,
- V.V. Smaluk,
- A.V. 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,
- Yu.V. Usov,
- A.I. Vorobiov,
- A.N. Yushkov,
- V.N. Zhilich,
- V.V. Zhulanov,
- A.N. Zhuravlev
Affiliations
- V.V. Anashin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.M. Aulchenko
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- E.M. Baldin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.K. Barladyan
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.Yu. Barnyakov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- M.Yu. Barnyakov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- S.E. Baru
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- I.Yu. Basok
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- I.V. Bedny
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.E. Blinov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- V.E. Blinov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, 20, Karl Marx prospect, Novosibirsk, 630092, Russia
- A.V. Bobrov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.S. Bobrovnikov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.V. Bogomyagkov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.E. Bondar
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.R. Buzykaev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.I. Eidelman
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia; Corresponding authors.
- Yu.M. Glukhovchenko
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.V. Gulevich
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- D.V. Gusev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.E. Karnaev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- G.V. Karpov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.V. Karpov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- T.A. Kharlamova
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- V.A. Kiselev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.A. Kononov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- K.Yu. Kotov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- E.A. Kravchenko
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- V.F. Kulikov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- G.Ya. Kurkin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, 20, Karl Marx prospect, Novosibirsk, 630092, Russia
- E.A. Kuper
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- E.B. Levichev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, 20, Karl Marx prospect, Novosibirsk, 630092, Russia
- D.A. Maksimov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.M. Malyshev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Corresponding authors.
- A.L. Maslennikov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.S. Medvedko
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- O.I. Meshkov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- S.I. Mishnev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- I.I. Morozov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- N.Yu. Muchnoi
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- V.V. Neufeld
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.A. Nikitin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- I.B. Nikolaev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- I.N. Okunev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.P. Onuchin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, 20, Karl Marx prospect, Novosibirsk, 630092, Russia
- S.B. Oreshkin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- I.O. Orlov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.A. Osipov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.V. Peleganchuk
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.G. Pivovarov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, 20, Karl Marx prospect, Novosibirsk, 630092, Russia
- P.A. Piminov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.V. Petrov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.O. Poluektov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- G.E. Pospelov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.G. Prisekin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- O.L. Rezanova
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.A. Ruban
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.K. Sandyrev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- G.A. Savinov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.G. Shamov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- D.N. Shatilov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- B.A. Shwartz
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- E.A. Simonov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- S.V. Sinyatkin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.N. Skrinsky
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.V. Smaluk
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.V. Sokolov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.M. Sukharev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- E.V. Starostina
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.A. Talyshev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- V.A. Tayursky
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.I. Telnov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- Yu.A. Tikhonov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- K.Yu. Todyshev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- G.M. Tumaikin
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- Yu.V. Usov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.I. Vorobiov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- A.N. Yushkov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.N. Zhilich
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia
- V.V. Zhulanov
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- A.N. Zhuravlev
- Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova street, Novosibirsk, 630090, Russia
- Journal volume & issue
-
Vol. 738
pp. 391 – 396
Abstract
Using the inclusive photon spectrum based on a data sample collected at the J/ψ peak with the KEDR detector at the VEPP-4M e+e− collider, we measured the rate of the radiative decay J/ψ→γηc as well as ηc mass and width. Taking into account an asymmetric photon lineshape we obtained Γγηc0=2.98±0.18−0.33+0.15keV, Mηc=2983.5±1.4−3.6+1.6MeV/c2, Γηc=27.2±3.1−2.6+5.4MeV. Keywords: Charmonium, Radiative decays
