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Higgs-boson production at small transverse momentum

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Abstract

Using methods from effective field theory, we have recently developed a novel, systematic framework for the calculation of the cross sections for electroweak gauge-boson production at small and very small transverse momentum q T , in which large logarithms of the scale ratio m V /q T are resummed to all orders. This formalism is applied to the production of Higgs bosons in gluon fusion at the LHC. The production cross section receives logarithmically enhanced corrections from two sources: the running of the hard matching coefficient and the collinear factorization anomaly. The anomaly leads to the dynamical generation of a non-perturbative scale \( {q_{*}}\tilde{\mkern6mu} {m_H}{e^{{{{{-\mathrm{const}}} \left/ {{{\alpha_s}\left( {{m_H}} \right)}} \right.}}}}\approx 8 \) GeV, which protects the process from receiving large long-distance hadronic contributions. We present numerical predictions for the transverse-momentum spectrum of Higgs bosons produced at the LHC, finding that it is quite insensitive to hadronic effects.

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Authors and Affiliations

  1. Albert Einstein Center for Fundamental Physics, Institut für Theoretische Physik, Universität Bern, Sidlerstrasse 5, CH-3012, Bern, Switzerland

    Thomas Becher

  2. PRISMA Cluster of Excellence & Mainz Institute for Theoretical Physics, Johannes Gutenberg University, Staudingerweg 7, 55099, Mainz, Germany

    Matthias Neubert & Daniel Wilhelm

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  2. Matthias Neubert
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Correspondence to Thomas Becher.

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ArXiv ePrint: 1212.2621

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Becher, T., Neubert, M. & Wilhelm, D. Higgs-boson production at small transverse momentum. J. High Energ. Phys. 2013, 110 (2013). https://doi.org/10.1007/JHEP05(2013)110

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