Journal of High Energy Physics (May 2018)
Measurement of Γee(J/ψ) with KEDR detector
- V. V Anashin,
- V. M Aulchenko,
- E. M Baldin,
- A. K Barladyan,
- A. Y Barnyakov,
- M. Y Barnyakov,
- S. E Baru,
- I. V Bedny,
- A. E Blinov,
- V. E Blinov,
- A. V Bobrov,
- V. S Bobrovnikov,
- A. V Bogomyagkov,
- A. E Bondar,
- D. V Bondarev,
- A. R Buzykaev,
- S. I Eidelman,
- Y. 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. Y Kotov,
- E. A Kravchenko,
- V. F Kulikov,
- G. Y 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. Y 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,
- I. N Popkov,
- 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,
- Y. I Skovpen,
- A. N Skrinsky,
- V. V Smaluk,
- A. V Sokolov,
- A. M Sukharev,
- E. V Starostina,
- A. A Talyshev,
- V. A Tayursky,
- V. I Telnov,
- Y. A Tikhonov,
- K. Y Todyshev,
- G. M Tumaikin,
- Y. 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
- V. M Aulchenko
- Budker Institute of Nuclear Physics
- E. M Baldin
- Budker Institute of Nuclear Physics
- A. K Barladyan
- Budker Institute of Nuclear Physics
- A. Y Barnyakov
- Budker Institute of Nuclear Physics
- M. Y Barnyakov
- Budker Institute of Nuclear Physics
- S. E Baru
- Budker Institute of Nuclear Physics
- I. V Bedny
- Budker Institute of Nuclear Physics
- A. E Blinov
- Budker Institute of Nuclear Physics
- V. E Blinov
- Budker Institute of Nuclear Physics
- A. V Bobrov
- Budker Institute of Nuclear Physics
- V. S Bobrovnikov
- Budker Institute of Nuclear Physics
- A. V Bogomyagkov
- Budker Institute of Nuclear Physics
- A. E Bondar
- Budker Institute of Nuclear Physics
- D. V Bondarev
- Budker Institute of Nuclear Physics
- A. R Buzykaev
- Budker Institute of Nuclear Physics
- S. I Eidelman
- Budker Institute of Nuclear Physics
- Y. M Glukhovchenko
- Budker Institute of Nuclear Physics
- V. V Gulevich
- Budker Institute of Nuclear Physics
- D. V Gusev
- Budker Institute of Nuclear Physics
- S. E Karnaev
- Budker Institute of Nuclear Physics
- G. V Karpov
- Budker Institute of Nuclear Physics
- S. V Karpov
- Budker Institute of Nuclear Physics
- T. A Kharlamova
- Budker Institute of Nuclear Physics
- V. A Kiselev
- Budker Institute of Nuclear Physics
- S. A Kononov
- Budker Institute of Nuclear Physics
- K. Y Kotov
- Budker Institute of Nuclear Physics
- E. A Kravchenko
- Budker Institute of Nuclear Physics
- V. F Kulikov
- Budker Institute of Nuclear Physics
- G. Y Kurkin
- Budker Institute of Nuclear Physics
- E. A Kuper
- Budker Institute of Nuclear Physics
- E. B Levichev
- Budker Institute of Nuclear Physics
- D. A Maksimov
- Budker Institute of Nuclear Physics
- V. M Malyshev
- Budker Institute of Nuclear Physics
- A. L Maslennikov
- Budker Institute of Nuclear Physics
- A. S Medvedko
- Budker Institute of Nuclear Physics
- O. I Meshkov
- Budker Institute of Nuclear Physics
- S. I Mishnev
- Budker Institute of Nuclear Physics
- I. I Morozov
- Budker Institute of Nuclear Physics
- N. Y Muchnoi
- Budker Institute of Nuclear Physics
- V. V Neufeld
- Budker Institute of Nuclear Physics
- S. A Nikitin
- Budker Institute of Nuclear Physics
- I. B Nikolaev
- Budker Institute of Nuclear Physics
- I. N Okunev
- Budker Institute of Nuclear Physics
- A. P Onuchin
- Budker Institute of Nuclear Physics
- S. B Oreshkin
- Budker Institute of Nuclear Physics
- I. O Orlov
- Budker Institute of Nuclear Physics
- A. A Osipov
- Budker Institute of Nuclear Physics
- S. V Peleganchuk
- Budker Institute of Nuclear Physics
- S. G Pivovarov
- Budker Institute of Nuclear Physics
- P. A Piminov
- Budker Institute of Nuclear Physics
- V. V Petrov
- Budker Institute of Nuclear Physics
- A. O Poluektov
- Budker Institute of Nuclear Physics
- I. N Popkov
- Budker Institute of Nuclear Physics
- V. G Prisekin
- Budker Institute of Nuclear Physics
- O. L Rezanova
- Budker Institute of Nuclear Physics
- A. A Ruban
- Budker Institute of Nuclear Physics
- V. K Sandyrev
- Budker Institute of Nuclear Physics
- G. A Savinov
- Budker Institute of Nuclear Physics
- A. G Shamov
- Budker Institute of Nuclear Physics
- D. N Shatilov
- Budker Institute of Nuclear Physics
- B. A Shwartz
- Budker Institute of Nuclear Physics
- E. A Simonov
- Budker Institute of Nuclear Physics
- S. V Sinyatkin
- Budker Institute of Nuclear Physics
- Y. I Skovpen
- Budker Institute of Nuclear Physics
- A. N Skrinsky
- Budker Institute of Nuclear Physics
- V. V Smaluk
- Budker Institute of Nuclear Physics
- A. V Sokolov
- Budker Institute of Nuclear Physics
- A. M Sukharev
- Budker Institute of Nuclear Physics
- E. V Starostina
- Budker Institute of Nuclear Physics
- A. A Talyshev
- Budker Institute of Nuclear Physics
- V. A Tayursky
- Budker Institute of Nuclear Physics
- V. I Telnov
- Budker Institute of Nuclear Physics
- Y. A Tikhonov
- Budker Institute of Nuclear Physics
- K. Y Todyshev
- Budker Institute of Nuclear Physics
- G. M Tumaikin
- Budker Institute of Nuclear Physics
- Y. V Usov
- Budker Institute of Nuclear Physics
- A. I Vorobiov
- Budker Institute of Nuclear Physics
- A. N Yushkov
- Budker Institute of Nuclear Physics
- V. N Zhilich
- Budker Institute of Nuclear Physics
- V. V Zhulanov
- Budker Institute of Nuclear Physics
- A. N Zhuravlev
- Budker Institute of Nuclear Physics
- DOI
- https://doi.org/10.1007/JHEP05(2018)119
- Journal volume & issue
-
Vol. 2018,
no. 5
pp. 1 – 23
Abstract
Abstract The product of the electronic width of the J/ψ meson and the branching fractions of its decay to hadrons and electrons has been measured using the KEDR detector at the VEPP-4M e + e − collider. The obtained values are ΓeeJ/ψ=5.550±0.056±0.089keV,ΓeeJ/ψ·ℬhadronsJ/ψ=4.884±0.048±0.078keV,ΓeeJ/ψ·ℬeeJ/ψ=0.3331±0.0066±0.0040keV. $$ \begin{array}{c}\hfill {\Gamma}_{ee}\left(J/\psi \right)=5.550\pm 0.056\pm 0.089\kern0.5em \mathrm{keV},\hfill \\ {}\hfill {\Gamma}_{ee}\left(J/\psi \right)\cdotp {\mathrm{\mathcal{B}}}_{\mathrm{hadrons}}\left(J/\psi \right)=4.884\pm 0.048\pm 0.078\kern0.5em \mathrm{keV},\hfill \\ {}\hfill {\Gamma}_{ee}\left(J/\psi \right)\cdotp {\mathrm{\mathcal{B}}}_{ee}\left(J/\psi \right)=0.3331\pm 0.0066\pm 0.0040\kern0.5em \mathrm{keV}.\hfill \end{array} $$ The uncertainties shown are statistical and systematic, respectively. Using the result presented and the world-average value of the electronic branching fraction, one obtains the total width of the J/ψ meson: Γ=92.94±1.83keV. $$ \Gamma =92.94\pm 1.83\kern0.5em \mathrm{keV}. $$ These results are consistent with the previous experiments.
Keywords
