29 June 2022 to 1 July 2022
Physics Building
US/Eastern timezone

Precision boson-jet azimuthal decorrelation at hadron colliders

30 Jun 2022, 11:00
30m
Room C-120 (Physics Building)

Room C-120

Physics Building

Room C-120 (called “Peter Paul Seminar Room”) on the C-floor of the Physics Building. Once registered for the workshop, the online participants will receive a zoom link to connect to the workshop.

Speaker

Dr Yang-Ting Chien (Georgia State University)

Description

The azimuthal angular decorrelation of a vector boson and jet is sensitive to QCD radiation, and can be used to probe the quark-gluon plasma in heavy-ion collisions. By using a recoil-free jet definition, the sensitivity to contamination from soft radiation on the measurement is reduced, and the complication of non-global logarithms is eliminated from our theoretical calculation. Such jet definitions also significantly simplify the calculation for a track-based measurement, which is preferred due to its superior angular resolution. I will discuss the factorization in Soft-Collinear Effective Theory and show that potential glauber contributions do not spoil our factorization formalism, at least up to and including order αs3. The resummation is carried out using the renormalization group, and all necessary ingredients are collected or calculated. I will also discuss phenomenological studies, finding an enhanced matching correction for high jet pT due to the electroweak collinear enhancement of a boson emission off di-jets. By comparing with the Pythia event generator, I will show that our observable is very robust to hadronization and the underlying event.

Primary authors

Dr Yang-Ting Chien (Georgia State University) Rudi Rahn (University of Amsterdam) Wouter Waalewijn (University of Amsterdam) Dr Bin Wu (CERN) Prof. Dingyu Shao (Fudan University)

Presentation materials