FYSJ5112 PH2: Basics of Jet Substructure (JSS35) (1 op)

In these lectures, I will introduce students to the foundations of jet substructure physics. In particular, I will discuss the production of hadronic jets at the LHC, explain the main ideas and concepts used to construct jet substructure observables, and provide an overview of the most important scientific results obtained with jet substructure studies.

After that, I will introduce jet grooming techniques (such as SoftDrop and CollinearDrop), which allow us to study different jet-production regimes separately (via collinear and soft emissions), and explain how these techniques can be used to perform precise tests of Quantum Chromodynamics (QCD). Finally, I will explain the basics of resummation techniques used to calculate the cumulative distribution of a simple jet substructure observable at leading- and next-to-leading-log accuracy levels. During the hands-on session, the students will compare the obtained theoretical predictions against experimental jet mass measurements performed by the CMS collaboration.    

Students will receive a broad overview of jet substructure physics and of the most important results obtained in the field. They will also master the basics of resummation techniques used to calculate cumulative distributions of jet mass at leading- and next-to-leading-log accuracy levels.

Basic knowlege of paritcle physics. Laptop / PC with interntet connection and personal Google collab account (for the hands-on sessions).