Free Meson Seminars

On Zoom - Higgs Production at NNLL' + NNLO using Rapidity Dependent Jet Vetoes

by Dr. Shireen Gangal (TIFR)

Friday, May 29, 2020 from to (Asia/Kolkata)
at Zoom
Description
We present predictions for Higgs production cross section via gluon fusion, with a veto imposed on additional jets using rapidity-dependent jet vetoes. These jet veto observables provide a tight veto at central rapidity, gradually transitioning to a loose veto at forward rapidities. They divide the phase space into exclusive jet bins in a different way to the traditional jet veto observable pTjet, and are advantageous to use under harsh pile-up conditions. We obtain predictions for the 0-jet gluon-fusion (ggF) Higgs cross section using these rapidity-dependent jet veto observables at NNLL'+ NNLO, and compare these predictions to the prior state-of-the-art of NLL'+ NLO. A significant reduction in perturbative uncertainty is observed going from NLL'+ NLO to NNLL'+ NNLO. We also investigate the relative sensitivities of ggF Higgs cross sections with these jet vetoes, to underlying event and hadronisation effects.
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