2017 Meeting of the APS Division of Particles and Fields (DPF 2017)

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

31 Jul 2017, 14:04

17m

1 East (Fermi National Accelerator Laboratory)

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

Speaker

Mr Harish Potti (University of Texas at Austin)

Description

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.

Presentation materials

Slides

Harish_DPF_Zlumi.pdf