2nd CERN Baltic Conference (CBC 2022)

ttbar simulation and jet energy studies (towards a measurement of the ttbar mass difference at CMS)

Not scheduled

20m

A101 (National Centre of Physical and Technological Sciences)

Speaker

Andris Potrebko (Riga Technical University (LV))

Description

Both CMS and ATLAS, the two general-purpose detectors at the LHC, need a vast array of large Monte-Carlo data samples, in order to probe the Standard Model. Common MC samples allow for assessing differences in detector performance and analysis strategy. A new ttbar sample based on the Sherpa generator is compared to CMS and ATLAS data using the Rivet validation framework. The measurement of the top/antitop mass difference requires careful energy calibration of the jets initiated by different quark flavors. The current status is presented, including first studies of quark vs anti-quark jet energy response in simulation.