Jet mass spectra in Higgs boson plus one jet at next-to-next-to-leading logarithmic order
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Jouttenus-2013-Jet mass spectra.pdf
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1.99 MB
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Author(s)
Tackmann, Frank J.
Waalewijn, Wouter J.
Jouttenus, Teppo Tapani
Stewart, Iain
Date Issued
September 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Jouttenus, Teppo T., Iain W. Stewart, Frank J. Tackmann, and Wouter J. Waalewijn. “Jet mass spectra in Higgs boson plus one jet at next-to-next-to-leading logarithmic order.” Physical Review D 88, no. 5 (September 2013). © 2013 American Physical Society
Version
Final published version
Abstract
The invariant mass of a jet is a benchmark variable describing the structure of jets at the LHC. We calculate the jet mass spectrum for Higgs plus one jet at the LHC at next-to-next-to-leading logarithmic (NNLL) order using a factorization formula. At this order, the cross section becomes sensitive to perturbation theory at the soft m[2 over jet]/p[jet over T] scale. Our calculation is exclusive and uses the 1-jettiness global event shape to implement a veto on additional jets. The dominant dependence on the jet veto is removed by normalizing the spectrum, leaving residual dependence from nonglobal logarithms depending on the ratio of the jet mass and jet-veto variables. For our exclusive jet cross section these nonglobal logarithms are parametrically smaller than in the inclusive case, allowing us to obtain a complete NNLL result. Results for the dependence of the jet mass spectrum on the kinematics, jet algorithm, and jet size R are given. Using individual partonic channels we illustrate the difference between the jet mass spectra for quark and gluon jets. We also study the effect of hadronization and underlying event on the jet mass in PYTHIA. To highlight the similarity of inclusive and exclusive jet mass spectra, a comparison to LHC data is presented.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.88.054031
