Preliminary Results of Measurements of Hadronic Cross Sections with the CMD-3 Detector at the VEPP-2000 Electron-Positron Collider

摘要

Experiments with the CMD-3 detector at the VEPP-2000 electron-positron collider in the range of center of mass collision energies from 0.32 to 2 GeV have been performed since December 2010. The amount of accumulated data corresponds to an integrated luminosity of about 60 pb(-1). The results of a preliminary analysis are presented for the following annihilation channels: e(+)e(-) -> 3(pi(+)pi(-)), 2(pi(+)pi(-)pi(0)), K+ K-pi(+)pi(-), K+K-, p (p) over bar, and pi(+)pi(-). Since processes of electron-positron annihilation that involve the production of multihadron states proceed through several intermediate states, their analysis is necessary for the correct description of the emission-angle and invariant-mass distributions of product particles.