25-27 May 2021
Europe/Zurich timezone

Azimuthal decorrelation in V+jet production with the WTA axis

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Talk Talks


Rudi Rahn (Universiteit van Amsterdam)


The azimuthal decorrelation in vector boson+jet production due to soft and collinear QCD effects can be calculated to high precision by using recoil-free jet axes, such as the Winner-Takes-All (WTA) axis, alongside Soft-Collinear Effective Theory (SCET) methods.
We present theoretical predictions at next-to-next-to-leading logarithmic accuracy for the azimuthal decorrelation, and demonstrate that this result is robust when using charged tracks instead of calorimetry, and in the presence of large backgrounds, due to the features of the WTA axis.
We further find contributions to the process from linearly-polarised gluon transverse momentum distributions (arising from spin superposition effects of a single incoming or outgoing parton), in both the initial and final state.

Primary authors

Dr Yang-Ting Chien (Stony Brook University) Rudi Rahn (Universiteit van Amsterdam) Solange Schrijnder van Velzen Dr Dingyu Shao (Fudan University (CN)) Wouter Waalewijn (University of Amsterdam) Bin Wu

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