EPJ Web of Conferences (Jan 2019)
Study of the process e+e-→π+π-γ with the CMD-3 detector at the e+e- collider VEPP-2000
- Tolmachev S. S.,
- Akhmetshin R. R.,
- Amirkhanov A. N.,
- Anisenkov A. V.,
- Aulchenko V. M.,
- Banzarov V. Sh.,
- Bashtovoy N. S.,
- Berkaev D. E.,
- Bondar A. E.,
- Bragin A. V.,
- Eidelman S. I.,
- Epifanov D. A.,
- Epshteyn L. B.,
- Erofeev A. L.,
- Fedotovich G. V.,
- Gayazov S. E.,
- Grebenuk A. A.,
- Gribanov S. S.,
- Grigoriev D. N.,
- Ignatov F. V.,
- Ivanov V. L.,
- Karpov S. V.,
- Kazanin V. F.,
- Kirpotin A. N.,
- Koop I. A.,
- Korobov A. A.,
- Kozyrev A. N.,
- Kozyrev E. A.,
- Krokovny P. P.,
- Kuzmenko A. E.,
- Kuzmin A. S.,
- Logashenko I. B.,
- Lukin P. A.,
- Mikhailov K. Yu.,
- Okhapkin V. S.,
- Pestov Yu. N.,
- Popov A. S.,
- Razuvaev G. P.,
- Ruban A. A.,
- Ryskulov N. M.,
- Ryzhenenkov A. E.,
- Semenov A. V.,
- Shatunov Yu. M.,
- Shatunov P. Yu.,
- Shebalin V. E.,
- Shemyakin D. N.,
- Shwartz B. A.,
- Shwartz D. B.,
- Sibidanov A. L.,
- Solodov E. P.,
- Titov V. M.,
- Talyshev A. A.,
- Vorobiov A. I.,
- Zemlyansky I. M.,
- Yudinl Yu. V.
Affiliations
- Tolmachev S. S.
- Budker Institute of Nuclear Physics SB RAS
- Akhmetshin R. R.
- Amirkhanov A. N.
- Budker Institute of Nuclear Physics SB RAS
- Anisenkov A. V.
- Aulchenko V. M.
- Banzarov V. Sh.
- Budker Institute of Nuclear Physics SB RAS
- Bashtovoy N. S.
- Budker Institute of Nuclear Physics SB RAS
- Berkaev D. E.
- Bondar A. E.
- Bragin A. V.
- Budker Institute of Nuclear Physics SB RAS
- Eidelman S. I.
- Epifanov D. A.
- Epshteyn L. B.
- Erofeev A. L.
- Fedotovich G. V.
- Gayazov S. E.
- Grebenuk A. A.
- Gribanov S. S.
- Grigoriev D. N.
- Ignatov F. V.
- Ivanov V. L.
- Karpov S. V.
- Budker Institute of Nuclear Physics SB RAS
- Kazanin V. F.
- Kirpotin A. N.
- Budker Institute of Nuclear Physics SB RAS
- Koop I. A.
- Korobov A. A.
- Kozyrev A. N.
- Kozyrev E. A.
- Krokovny P. P.
- Kuzmenko A. E.
- Kuzmin A. S.
- Logashenko I. B.
- Lukin P. A.
- Mikhailov K. Yu.
- Budker Institute of Nuclear Physics SB RAS
- Okhapkin V. S.
- Budker Institute of Nuclear Physics SB RAS
- Pestov Yu. N.
- Budker Institute of Nuclear Physics SB RAS
- Popov A. S.
- Razuvaev G. P.
- Ruban A. A.
- Budker Institute of Nuclear Physics SB RAS
- Ryskulov N. M.
- Budker Institute of Nuclear Physics SB RAS
- Ryzhenenkov A. E.
- Semenov A. V.
- Shatunov Yu. M.
- Budker Institute of Nuclear Physics SB RAS
- Shatunov P. Yu.
- Budker Institute of Nuclear Physics SB RAS
- Shebalin V. E.
- Shemyakin D. N.
- Shwartz B. A.
- Shwartz D. B.
- Sibidanov A. L.
- Solodov E. P.
- Titov V. M.
- Budker Institute of Nuclear Physics SB RAS
- Talyshev A. A.
- Vorobiov A. I.
- Budker Institute of Nuclear Physics SB RAS
- Zemlyansky I. M.
- Budker Institute of Nuclear Physics SB RAS
- Yudinl Yu. V.
- DOI
- https://doi.org/10.1051/epjconf/201921204012
- Journal volume & issue
-
Vol. 212
p. 04012
Abstract
Existing Monte-Carlo generators with radiative corrections to the e+e-→π+π- process are usually developed under the assumption that pions can be treated as pointlike particles. We study the e+e-→π+π-γ process with final-state radiation and test this assumption using simulated events from the MCGPJ generator based on the scalar QED hypothesis. In order to increase a fraction of events with FSR, the analysis was performed in the energy region to the left from the ρ-meson peak (660÷785 MeV) that is based on the integrated luminosity of about 8.4 pb-1. The experimental data for the photon energy spectrum agree with the simulation results at 1% level.
