Higgs production with a central jet veto at NNLL plus NNLO
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Author(s)
Berger, Carola
Marcantonini, Claudio
Stewart, Iain
Tackmann, Frank
Waalewijn, Wouter J.
Date Issued
April 2011
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Berger, Carola F. et al. “Higgs production with a central jet veto at NNLL+NNLO.” Journal of High Energy Physics 2011.4 (2011).
Version
Author's final manuscript
Abstract
A major ingredient in Higgs searches at the Tevatron and LHC is the elimination
of backgrounds with jets. In current H → WW → lνlν searches, jet algorithms are used
to veto central jets to obtain a 0-jet sample, which is then analyzed to discover the Higgs
signal. Imposing this tight jet veto induces large double logarithms which significantly modify
the Higgs production cross section. These jet-veto logarithms are presently only accounted
for at fixed order or with the leading-logarithmic summation from parton-shower Monte
Carlos. Here we consider Higgs production with an inclusive event-shape variable for the
jet veto, namely beam thrust Tcm, which has a close correspondence with a traditional pT
jet veto. Tcm allows us to systematically sum the large jet-veto logarithms to higher orders
and to provide better estimates for theoretical uncertainties. We present results for the 0-jet
Higgs production cross section from gluon fusion at next-to-next-to-leading-logarithmic order
(NNLL), fully incorporating fixed-order results at next-to-next-to-leading order (NNLO). At
this order the scale uncertainty is 15 − 20%, depending on the cut, implying that a larger
scale uncertainty should be used in current Tevatron bounds on the Higgs.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/jhep04(2011)092
