Study of the process e+e− → 4π at energies 1.05–1.38 GeV

✍ Scribed by N.I. Root

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 151 KB
• Volume: 675
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00279-7

✦ Synopsis

In this work, we present results of a model-dependent analysis of both possible channels in e+e -annihilation into four pions based on 5.8 pb -1 of e+e -data collected with the CMD-2 detector [1] at center-of-mass energies v~ from 1.05 to 1.38 GeV. The data were recorded in 1997 at the VEPP-2M e+e -collider of the Budker Institute of Nuclear Physics in Novosibirsk, Russia.

2. DATA ANALYSIS

The process e+e --+ ~r+Ir-2~r ° was studied using 22128 completely reconstructed events with two oppositely charged tracks and four or more photons.