Wednesday weekly meeting

Wednesday 17 Apr 2024, 10:00 → 11:00 Asia/Tehran

Gholamhossein Haghighat (IPM)

General weekly meeting of the school of particles and accelerators (hybrid format)

• Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
• Link to join virtually: https://meet.google.com/fnv-dfkk-ghb

10:00 → 11:00 Luminosity at LHC

Luminosity, along with the center of mass energy, is the most important figure of merit of any particle collider. It quantifies the power of a machine to squeeze particles through a given space in a given time. The precision luminosity measurement is crucial as it directly affects the other physics parameters like physics process's production cross section. In this talk the luminosity is first introduced. Then the technique used to measure this quantity is presented, which yields in determining a calibration constant; so-called \sig_{visible}, via some specific van-der-Meer (vdM) scans. Finally, the contribution from several sources of systematic uncertainties on the measurement of the luminosity is discussed.

Speaker: Dr Maryam Zeinali (Sharif University of Technology and Isfahan University of Technology)