August 28, 2022 to September 1, 2022
Serbian Academy of Sciences and Arts – SASA
Europe/Belgrade timezone

Systematic uncertainties in integrated luminosity measurement at CEPC

S05-HEP-112
Aug 30, 2022, 3:30 PM
10m
Hall 661 (Faculty of Physics)

Hall 661

Faculty of Physics

Board: S05-HEP-112
Oral presentation S05 High Energy Physics (Particles and Fields) S05 High Energy Physics (Particles and Fields)

Speaker

Ivan Smiljanić (Vinča Institute of Nuclear Sciences, University of Belgrade)

Description

The very forward region is one of the most challenging regions to instrument at a future e+e- collider. Machine-detector interface at CEPC will include a calorimeter dedicated for precision measurement of the integrated luminosity at a permill level or better. We discuss a feasibility of such precision from the point of view of systematic effects arising from luminometer mechanical precision and positioning, beam-related requirements and physics background. Additionally, a method of the beam energy spread determination, initially proposed for FCC, is discussed for the CEPC beams, as well as the impact of beam energy spread on integrated luminosity determination and the precision of electroweak observables measurement at the Z0 pole.

Primary author

Ivan Smiljanić (Vinča Institute of Nuclear Sciences, University of Belgrade)

Co-authors

Dr Ivanka Bozović Jelisavčić (Vinča Institute of Nuclear Sciences, University of Belgrade) Goran Kacarevic (Vinča Institute of Nuclear Sciences, University of Belgrade) Ivana Vidaković (Vinča Institute of Nuclear Sciences, University of Belgrade) Dr Vladimir Reković (Vinča Institute of Nuclear Sciences, University of Belgrade)

Presentation materials