ISSN - 09205632, Nuclear Physics B - Proceedings Supplements, 2012, vol. 225-227, p. 69-71
Current status of the luminosity measurement with the CMD-3 detector at the VEPP-2000 e +e - collider
The first results of the luminosity measurement with the CMD-3 detector at the VEPP-2000 e +e - collider are presented. The luminosity was measured using two different processes e +e -→e +e - and e +e -→γγ, that allowed to better understand and estimate the systematic accuracy which was found to be ~2%. The analysis of the data was done on the integrated luminosity about 20 pb -1. A Monte-Carlo Generator Photon Jets (MCGPJ) [A.Arbuzov et al., EPJ C46, 689 (2006); S.Actis et al., EPJ C66, 585 (2010)] to simulate Bhabha scattering events as well as production of two photons was adopted for analysis of the data. A theoretical precision of these cross sections with radiative corrections (RC) is estimated to be better than 0.2%. © 2012 Elsevier B.V.