ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1999, vol. 466, p. 392-402
a1(1260)π dominance in the process e+e- → 4π at energies 1.05-1.38 GeV
The 5.8 pb-1 of data collected by the CMD-2 Collaboration in the energy range 1.05-1.38 GeV have been used to study energy dependence of the processes e+e- → π+π-2π0 and e+e- → 2π+2π-. Analysis of the differential distributions demonstrates the dominance of the a1(1260)π and ωπ intermediate states. Upper limits for the contributions of other possible states are also obtained. © 1999 Published by Elsevier Science B.V. All rights reserved.