Journal of High Energy Physics (Jan 2020)
Measurement of the e+e − → ηπ + π − cross section with the CMD-3 detector at the VEPP-2000 collider
- CMD-3 collaboration,
- S. S. Gribanov,
- A. S. Popov,
- R. R. Akhmetshin,
- A. N. Amirkhanov,
- A. V. Anisenkov,
- V. M. Aulchenko,
- V. Sh. Banzarov,
- N. S. Bashtovoy,
- D. E. Berkaev,
- A. E. Bondar,
- A. V. Bragin,
- S. I. Eidelman,
- D. A. Epifanov,
- L. B. Epshteyn,
- A. L. Erofeev,
- G. V. Fedotovich,
- S. E. Gayazov,
- F. J. Grancagnolo,
- A. A. Grebenuk,
- D. N. Grigoriev,
- F. V. Ignatov,
- V. L. Ivanov,
- S. V. Karpov,
- V. F. Kazanin,
- A. N. Kirpotin,
- I. A. Koop,
- A. A. Korobov,
- O. A. Kovalenko,
- A. N. Kozyrev,
- E. A. Kozyrev,
- P. P. Krokovny,
- A. E. Kuzmenko,
- A. S. Kuzmin,
- I. B. Logashenko,
- P. A. Lukin,
- K. Yu. Mikhailov,
- V. S. Okhapkin,
- A. V. Otboev,
- Yu. N. Pestov,
- G. P. Razuvaev,
- Yu. A. Rogovsky,
- A. A. Ruban,
- N. M. Ryskulov,
- A. E. Ryzhenenkov,
- A. V. Semenov,
- A. I. Senchenko,
- Yu. M. Shatunov,
- P. Yu. Shatunov,
- V. E. Shebalin,
- D. N. Shemyakin,
- B. A. Shwartz,
- D. B. Shwartz,
- A. L. Sibidanov,
- E. P. Solodov,
- V. M. Titov,
- A. A. Talyshev,
- S. S. Tolmachev,
- A. I. Vorobiov,
- I. M. Zemlyansky,
- Yu. V. Yudin
Affiliations
- CMD-3 collaboration
- S. S. Gribanov
- Budker Institute of Nuclear Physics, SB RAS
- A. S. Popov
- Budker Institute of Nuclear Physics, SB RAS
- R. R. Akhmetshin
- Budker Institute of Nuclear Physics, SB RAS
- A. N. Amirkhanov
- Budker Institute of Nuclear Physics, SB RAS
- A. V. Anisenkov
- Budker Institute of Nuclear Physics, SB RAS
- V. M. Aulchenko
- Budker Institute of Nuclear Physics, SB RAS
- V. Sh. Banzarov
- Budker Institute of Nuclear Physics, SB RAS
- N. S. Bashtovoy
- Budker Institute of Nuclear Physics, SB RAS
- D. E. Berkaev
- Budker Institute of Nuclear Physics, SB RAS
- A. E. Bondar
- Budker Institute of Nuclear Physics, SB RAS
- A. V. Bragin
- Budker Institute of Nuclear Physics, SB RAS
- S. I. Eidelman
- Budker Institute of Nuclear Physics, SB RAS
- D. A. Epifanov
- Budker Institute of Nuclear Physics, SB RAS
- L. B. Epshteyn
- Budker Institute of Nuclear Physics, SB RAS
- A. L. Erofeev
- Budker Institute of Nuclear Physics, SB RAS
- G. V. Fedotovich
- Budker Institute of Nuclear Physics, SB RAS
- S. E. Gayazov
- Budker Institute of Nuclear Physics, SB RAS
- F. J. Grancagnolo
- Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, Physics Department
- A. A. Grebenuk
- Budker Institute of Nuclear Physics, SB RAS
- D. N. Grigoriev
- Budker Institute of Nuclear Physics, SB RAS
- F. V. Ignatov
- Budker Institute of Nuclear Physics, SB RAS
- V. L. Ivanov
- Budker Institute of Nuclear Physics, SB RAS
- S. V. Karpov
- Budker Institute of Nuclear Physics, SB RAS
- V. F. Kazanin
- Budker Institute of Nuclear Physics, SB RAS
- A. N. Kirpotin
- Budker Institute of Nuclear Physics, SB RAS
- I. A. Koop
- Budker Institute of Nuclear Physics, SB RAS
- A. A. Korobov
- Budker Institute of Nuclear Physics, SB RAS
- O. A. Kovalenko
- Budker Institute of Nuclear Physics, SB RAS
- A. N. Kozyrev
- Budker Institute of Nuclear Physics, SB RAS
- E. A. Kozyrev
- Budker Institute of Nuclear Physics, SB RAS
- P. P. Krokovny
- Budker Institute of Nuclear Physics, SB RAS
- A. E. Kuzmenko
- Budker Institute of Nuclear Physics, SB RAS
- A. S. Kuzmin
- Budker Institute of Nuclear Physics, SB RAS
- I. B. Logashenko
- Budker Institute of Nuclear Physics, SB RAS
- P. A. Lukin
- Budker Institute of Nuclear Physics, SB RAS
- K. Yu. Mikhailov
- Budker Institute of Nuclear Physics, SB RAS
- V. S. Okhapkin
- Budker Institute of Nuclear Physics, SB RAS
- A. V. Otboev
- Budker Institute of Nuclear Physics, SB RAS
- Yu. N. Pestov
- Budker Institute of Nuclear Physics, SB RAS
- G. P. Razuvaev
- Budker Institute of Nuclear Physics, SB RAS
- Yu. A. Rogovsky
- Budker Institute of Nuclear Physics, SB RAS
- A. A. Ruban
- Budker Institute of Nuclear Physics, SB RAS
- N. M. Ryskulov
- Budker Institute of Nuclear Physics, SB RAS
- A. E. Ryzhenenkov
- Budker Institute of Nuclear Physics, SB RAS
- A. V. Semenov
- Budker Institute of Nuclear Physics, SB RAS
- A. I. Senchenko
- Budker Institute of Nuclear Physics, SB RAS
- Yu. M. Shatunov
- Budker Institute of Nuclear Physics, SB RAS
- P. Yu. Shatunov
- Budker Institute of Nuclear Physics, SB RAS
- V. E. Shebalin
- Budker Institute of Nuclear Physics, SB RAS
- D. N. Shemyakin
- Budker Institute of Nuclear Physics, SB RAS
- B. A. Shwartz
- Budker Institute of Nuclear Physics, SB RAS
- D. B. Shwartz
- Budker Institute of Nuclear Physics, SB RAS
- A. L. Sibidanov
- Budker Institute of Nuclear Physics, SB RAS
- E. P. Solodov
- Budker Institute of Nuclear Physics, SB RAS
- V. M. Titov
- Budker Institute of Nuclear Physics, SB RAS
- A. A. Talyshev
- Budker Institute of Nuclear Physics, SB RAS
- S. S. Tolmachev
- Budker Institute of Nuclear Physics, SB RAS
- A. I. Vorobiov
- Budker Institute of Nuclear Physics, SB RAS
- I. M. Zemlyansky
- Budker Institute of Nuclear Physics, SB RAS
- Yu. V. Yudin
- Budker Institute of Nuclear Physics, SB RAS
- DOI
- https://doi.org/10.1007/JHEP01(2020)112
- Journal volume & issue
-
Vol. 2020,
no. 1
pp. 1 – 24
Abstract
Abstract The cross section of the process e + e − → ηπ + π − is measured using the data collected with the CMD-3 detector at the VEPP-2000 collider in the center-of-mass energy range from 1.1 to 2.0 GeV. The decay mode η → γγ is used for η meson reconstruction in the data sample corresponding to an integrated luminosity of 78.3 pb −1. The energy dependence of the e + e − → ηπ + π − cross section is fitted within the framework of vector meson dominance in order to extract the Γ(ρ(1450) → e + e − ) B $$ \mathcal{B} $$ (ρ(1450) → ηπ + π − ) and the Γ(ρ(1700) → e + e − ) B $$ \mathcal{B} $$ (ρ(1700) → ηπ + π − ) products. Based on conservation of vector current, the analyzed data are used to test the relationship between the e + e − → ηπ + π − cross section and the spectral function in τ − → ηπ − π 0 ντ decay. The e + e − → ηπ + π − cross section obtained with the CMD-3 detector is in good agreement with the previous measurements.
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