EPJ Web of Conferences (Jan 2019)

Study of π+π−π+π− production with CMD-3 detector at the VEPP-2000 collider

  • Korobov A. A.,
  • 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.,
  • Kasaev A. S.,
  • Kazanin V. F.,
  • Koop I. A.,
  • Korobov A. A.,
  • Kozyrev A. N.,
  • Kozyrev E. A.,
  • Krokovny P. P.,
  • Kuzmenko A. E.,
  • Kuzmin A. S.,
  • Logashenko I. B.,
  • Lysenko A. P.,
  • Lukin P. A.,
  • Mikhailov K. Yu.,
  • Okhapkin V. S.,
  • Otboev A. V.,
  • Perevedentsev E. A.,
  • Pestov Yu. N.,
  • Popov A. S.,
  • Razuvaev G. P.,
  • Ruban A. A.,
  • Ryskulov N. M.,
  • Ryzhenenkov A. E.,
  • Semenov A. V.,
  • Senchenko A. I.,
  • Shatunov Yu. M.,
  • 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.,
  • Yudin Yu. V.

DOI
https://doi.org/10.1051/epjconf/201921204009
Journal volume & issue
Vol. 212
p. 04009

Abstract

Read online

The cross section of the process e+e−→ π+π−π+π− has been measured using an integrated luminosity of 17 pb−1 collected with the CMD-3 detector in the center-of-mass energy range 650-1000 MeV. High-precision measurements of various hadronic cross sections are of great interest in relation with the problem of the muon anomalous magnetic moment g-2. This measurement can be also used to test the relation between the cross section of e+e−→ π+ π−π+ π− and the spectral function for the τ−→ π−π0π0π0 decay predicted by the conservation of vector current (CVC).