Speaker
Ivanka Bozovic
(Vinca Institute of Nuclear Sciences)
Description
In order to ensure measurement of the integrated luminosity with a relative precision of 10−4 at the Z0 pole at CEPC, numerous systematic effects have to be quantified and corrected for. Here we discuss collective impact of electromagnetic bunch fields on the initial state electrons and positrons as well as on the final states produced in Bhabha scattering. These effects change four-momenta of the final state particles, leading to modification of Bhabha count in the instrumented volume. Size of the counting loss is quantified in simulation, and experimental method based on machine learning is discussed in order to correct for this loss.
Primary author
Ivanka Bozovic
(Vinca Institute of Nuclear Sciences)
