The precision luminosity measurement at the future e+e- circular collider

Suen Hou^1*

¹physics, academia sinica, taipei, Taiwan

* Presenter:Suen Hou, email:suen@sinica.edu.tw

The luminosity of e+e- collisions is required for high precision for the physics programs at the future Circular Electron Positron Collider . The detector design of a luminosity calorimeter is required for the luminosity precision of 10^-3 and 10^-4 in e+e- collisions at 240 GeV center-of-mass energy and at the Z0 pole, respectively, for measurements of Higgs bosons and Electroweak interactions. The Luminosity calorimeter is designed to detect Bhabha elastic e+e- scattering events. The precision on the detector assembly and the measurements of electron impact position with silicon detectors are investigated for the precision required for luminosity measurement.

Keywords: standard model , particle physics, collider experiment, luminosity