Talks

Parton showers beyond leading logarithmic accuracy

by Dr. Keith Hamilton (UCL)

Thursday, 1 October 2020 from to (UTC)
at Universe
Description
Zoom room for seminars: https://cern.zoom.us/j/98750947196?pwd=N1RTS3EzazBha0tURVJOcEZKREFxZz09
Meeting ID: 987 5094 7196
Passcode: 613113

Abstract:
Parton showers are among the most widely used tools in collider physics. Despite their key importance, none so far has been able to demonstrate accuracy beyond a basic level known as leading logarithmic (LL) order. We propose criteria for parton showers to be considered accurate at the next-to-leading logarithmic (NLL) level. We go on to introduce new classes of shower, for final-state radiation, satisfying the main elements of these criteria in the large-Nc limit. Finally, we compare results from concrete implementations of the new showers to those of observable-specific, analytical, NLL calculations.
Material: