July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Instantaneous luminosity calibration of the ATLAS experiment with $Z\to \mu ^{-} \mu ^ {+}$

Jul 31, 2017, 2:04 PM
1 East (Fermi National Accelerator Laboratory)

1 East

Fermi National Accelerator Laboratory

Presentation Computing, Analysis Tools and Data Handling Computing, Analysis Tools, and Data Handling


Mr Harish Potti (University of Texas at Austin)


In this talk, a new method of calibrating the instantaneous luminosity of the ATLAS experiment with $Z\to \mu \mu $ process is presented. At the designed center-of-mass energy of the LHC, cross-section of $Z\to \mu \mu $ process is known to a very high precision and has a very good production rate (~1000 events/minute), which makes it suitable for luminosity measurement. Leading systematic uncertainties in this method come from the Standard Model theory, which are totally different compared to the leading systematic uncertainties on the current ATLAS luminosity measurement based on the Van der Meer method. A comparison of results with the official ATLAS luminosity measurements is presented for the entire data collected in 2015 and 2016.

Primary authors

Mr Harish Potti (University of Texas at Austin) Prof. Peter Onyisi (University of Texas at Austin)

Presentation materials