Apr 8 – 12, 2024
Maison MINATEC, Grenoble, FRANCE
Europe/Paris timezone

Precision boson-jet azimuthal decorrelation at hadron colliders

Apr 10, 2024, 11:00 AM
Maison MINATEC, Grenoble, FRANCE

Maison MINATEC, Grenoble, FRANCE

3 Parv. Louis Néel, 38054 Grenoble
Regular parallel talk WG4: QCD with Heavy Flavors and Hadronic Final States WG4


Bin Wu (Universidade de Santiago de Compostela)


In this talk, we present our results for the azimuthal decorrelation of a vector boson and jet in proton-proton collisions. We show that using a recoil-free jet definition reduces the sensitivity to contamination from soft radiation on the measurement and simplifies our theoretical calculation by eliminating complications associated with non-global logarithms. Specifically, we consider the $p_T^n$ recombination scheme, as well as the $n\to \infty$ limit, known as the winner-take-all scheme. These jet definitions also significantly simplify the calculation for a track-based measurement, which is preferred due to its superior angular resolution. We present a detailed discussion of the factorization in Soft-Collinear Effective Theory as well as resummation in the back-to-back limit up to next-to-next-to-leading logarithms. Whether the potential glauber contributions spoil our factorization formalism will also be commented on. We conclude with a detailed phenomenological study, finding an enhanced matching correction for high jet $p_T$ due to the electroweak collinear enhancement of a boson emission off di-jets. We also compare with the Pythia event generator, showing the robustness of our observable to effects of hadronization and the underlying event.

Primary authors

Prof. Yang-Ting Chien (Georgia State U.) Dr Rudi Rahn (Manchester U.) Dingyu Shao (Fudan University) Prof. Wouter J. Waalewijn (Nikhef and Amsterdam U.) Bin Wu (Universidade de Santiago de Compostela)

Presentation materials