Speaker
Dimbiniaina Rafanoharana
(University of the Witwatersrand (ZA))
Description
Improvement in the modelling of color reconnection (CR) is critical for precise measurements in $t\bar{t}$ events at the Large Hadron Collider. Modelling of CR is one of the main sources of uncertainty in top quark measurements. Different experimental observables have been studied, but due to lack of sensitivity they don't provide convenient input to constrain the modelling of CR. In this study, the activity of charged particles between subjets of a large-radius jet induced by a $t$ ($\bar{t}$) decaying hadronically, is probed if sensitive to CR. A Rivet based study shows differences in the distribution of the sum of the transverse momentum and the multiplicity of charged particles for color-connected and non color-connected subjets.
Authors
Dimbiniaina Rafanoharana
(University of the Witwatersrand (ZA))
Deepak Kar
(University of the Witwatersrand (ZA))