Jet Vetoes Interfering with H->WW

Abstract

Far off-shell Higgs production in $H\to WW,ZZ$, is a particularly powerful probe of Higgs properties, allowing one to disentangle Higgs width and coupling information unavailable in on-shell rate measurements. These measurements require an understanding of the cross section in the far off-shell region in the presence of realistic experimental cuts. We analytically study the effect of a $p_T$ jet veto on far off-shell cross sections, including signal-background interference, by utilizing hard functions in the soft collinear effective theory that are differential in the decay products of the $W/Z$. Summing large logarithms of $\sqrt{\hat{s}}/p_T^{veto}$, we find that the jet veto induces a strong dependence on the partonic centre of mass energy, $\sqrt{\hat{s}}$, and modifies distributions in $\sqrt{\hat{s}}$ or $M_T$. The example of $gg\to H\to WW$ is used to demonstrate these effects at next to leading log order. We also discuss the importance of jet vetoes and jet binning for the recent program to extract Higgs couplings and widths from far off-shell cross sections.

31 pages, 8 figures. v2: Journal Version

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Cited by in corpus (7)

• An Explanation of the WW Excess at the LHC by Jet-Veto Resummation
• Transverse momentum resummation effects in W^+W^- measurements
• Interference effects for Higgs-mediated Z-pair plus jet production
• On-shell interference effects in Higgs final states
• Soft Theorems from Effective Field Theory
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC
• Off-shell effects in Higgs decays to heavy gauge bosons and signal-background interference in Higgs decays to photons at a linear collider