Precision measurements at the LHC: Luminosity and W/Z cross section measurements with the CMS Experiment
Jakob Salfeld-Nebgen
Massachusetts Institute of Technology (USA)
Abstract: With the Run-2 era at the LHC accelerator well underway physical processes predicted by the Standard Model are being tested at 13 TeV centre-of-mass energy. In particular, the cross section of W and Z bosons in proton-proton collisions can be measured with high accuracy.
The inclusive and differential cross sections are compared with predictions from higher-order calculations in QCD and the electroweak sector and parton distribution functions can be experimentally studied. A leading systematic uncertainty in the measurements is the normalization of the dataset, the integrated luminosity. A dedicated accelerator setup, so called van-der-Meer scans, enable precise estimates of the proton beam properties. I will present the important aspects of luminosity measurements at the LHC, the current status of the W and Z boson cross section measurements with CMS and also aim to give a glance on recent measurements of rare Standard Model processes towards the end of the presentation.
Seminar takes place on Tuesday, September 19th 2017 at 2:00 PM
in the IEAP meeting room, Praha 2 ‐ Albertov, Horská 3a/22.
| Doc. Dr. André Sopczak seminar organizer |
doc. Ing. Ivan Štekl, CSc. headmaster |
Doc. Dr. André Sopczak IEEE CS - NPSS chair |
NUCLEAR & PLASMA SCIENCES SOCIETY CHAPTER
IEEE Czechoslovakia section
http://www.ieee.cz/en/nps