2023
03/17
OPEN
Date
2023/03/17（Fri）17:00〜18:30
Venue
Zoom
Speaker
Dr Fedor Ignatov (BINP)
Language
English
Contact
katsuro@post.kek.jp
Overview
The cross section of the process e+e- -> pi+pi- has been measured in the center of mass energy range from 0.32 to 1.2 GeV with the CMD-3 detector at the electron-positron collider VEPP-2000. The measurement is based on a full dataset collected below 1 GeV during three data taking seasons, corresponding to an integrated luminosity of about 62 pb-1. Numerous self consistency checks have been performed, like the three independent particle separation methods, study of experimental forward-backwards charge asymmetries and etc. In the dominant rho-resonance region, a systematic uncertainty of 0.7% has been obtained.