SusHi Bento: Beyond NNLO and the heavy-top limit

Published: 10 November 2016| Version 1 | DOI: 10.17632/3bb3z4k9hp.1
Contributors:
Robert V. Harlander,
Stefan Liebler,
Hendrik Mantler

Description

Version 1.6.0 of the code SusHi is presented. Concerning inclusive CP-even Higgs production in gluon fusion, the following new features with respect to previous versions have been implemented: expansion of the partonic cross section in the soft limit, i.e.~around x=MH2∕sˆ→1; N3LO QCD corrections in terms of the soft expansion; top-quark mass suppressed terms through NNLO; matching to the cross section at x→0 through N33LO. For CP-even and -odd scalars, an efficient evaluation of the renormalization-scale dependence is included, and effects of dimension-5 operators can be studied, which we demonstrate for the SM Higgs boson and for a CP-even scalar with a mass of 750GeV. In addition, as a generalization of the previously available bb̄→H cross section, SusHi_1.6.0 provides the cross section for charged and neutral Higgs production in the annihilation of arbitrary heavy quarks. At fixed order in perturbation theory, SusHi thus allows to obtain Higgs cross-section predictions in different models to the highest precision known today. For the SM Higgs boson of MH=125GeV, SusHi yields 48.28 pb for the gluon-fusion cross section at the LHC at 13TeV. Simultaneously, SusHi provides the renormalization-scale uncertainty of ±1.97 pb. A previous version of this program (AEOY_v1_0) may be found at http://dx.doi.org/10.1016/j.cpc.2013.02.006.

Files