Soft-drop event shapes in electron-positron annihilation at next-to-next-to-leading order accuracy

Abstract

We present predictions for soft-drop event shapes of hadronic final states in electron-positron annihilation at next-to-next-to-leading order accuracy in perturbation theory obtained using the CoLoRFulNNLO subtraction method. We study the impact of the soft drop on the convergence of the perturbative expansion for the distributions of three event shape variables, the soft-drop thrust, the hemisphere jet and narrow jet invariant masses. We find that grooming generally improves perturbative convergence for these event shapes. This better perturbative stability, in conjunction with a reduced sensitivity to non-perturbative hadronization corrections makes soft-drop event shapes promising observables for the precise determination of the strong coupling at lepton colliders.

11 pages, 3 figures and 3 tables

References in corpus (3)

• Jet substructure as a new Higgs search channel at the LHC
• Techniques for improved heavy particle searches with jet substructure
• Energy-energy correlation in electron-positron annihilation at NNLL+NNLO accuracy

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• Calculating the angle between jet axes
• Two- and Three-Loop Data for Groomed Jet Mass
• Dynamical grooming meets LHC data
• The soft drop momentum sharing fraction $z_g$ beyond leading-logarithmic accuracy
• Jet energy drop
• Revisiting the role of grooming in DIS
• Prospects for strong coupling measurement at hadron colliders using soft-drop jet mass
• EERAD3 version 2: QCD corrections in hadronic colour-singlet decays