Higgs production through gluon fusion: Updated cross sections at the Tevatron and the LHC
We present updated predictions for the total cross section for Higgs boson production by gluon-gluon fusion in hadron collisions. Our calculation includes the most advanced theoretical information available at present for this observable: soft-gluon resummation up to next-to-next-to-leading logarith...
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| Autores principales: | , |
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| Formato: | Artículo publishedVersion |
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2009
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03702693_v674_n4-5_p291_deFlorian https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03702693_v674_n4-5_p291_deFlorian_oai |
| Aporte de: |
| Sumario: | We present updated predictions for the total cross section for Higgs boson production by gluon-gluon fusion in hadron collisions. Our calculation includes the most advanced theoretical information available at present for this observable: soft-gluon resummation up to next-to-next-to-leading logarithmic accuracy, the exact treatment of the bottom-quark contribution up to next-to-leading order, and two-loop electroweak effects. We adopt the most recent parametrization of parton distribution functions at next-to-next-to-leading order, and we evaluate the corresponding uncertainties. In comparison with our previous central predictions, at the Tevatron the difference ranges from +9% for mH = 115 GeV to -9% for mH = 200 GeV. At the LHC the cross section is instead significantly increased. The effect goes from +30% for mH = 115 GeV to +9% for mH = 300 GeV, and is mostly due to the new parton distribution functions. We also provide new predictions for the LHC at sqrt(s) = 10 TeV. © 2009 Elsevier B.V. |
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