Antenna subtraction with hadronic initial states

Abstract

The antenna subtraction method for the computation of higher order corrections to jet observables and exclusive cross sections at collider experiments is extended to include hadronic initial states. In addition to the already known antenna subtraction with both radiators in the final state (final-final antennae), we introduce antenna subtractions with one or two radiators in the initial state (initial-final or initial-initial antennae). For those, we derive the phase space factorization and discuss the allowed phase space mappings at NLO and NNLO. We present integrated forms for all antenna functions relevant to NLO calculations, and describe the construction of the full antenna subtraction terms at NLO on two examples. The extension of the formalism to NNLO is outlined.

33 pages, 3 figures

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• Antenna Subtraction at NNLO
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• Fully differential Higgs boson production and the di-photon signal through next-to-next-to-leading order
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• A new method for real radiation at NNLO
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• Infrared Structure of $e^{+}{e}^{-}\to 2$ jets at NNLO
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• The W boson production cross section at the LHC through O(alpha_s^2)
• Quark-Gluon Antenna Functions from Neutralino Decay
• Numerical evaluation of phase space integrals by sector decomposition
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• Subtraction terms at NNLO
• Matching of Singly- and Doubly-Unresolved Limits of Tree-level QCD Squared Matrix Elements
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• Multiple Singular Emission in Gauge Theories
• A subtraction scheme for computing QCD jet cross sections at NNLO: regularization of real-virtual emission
• Matching Parton Showers to NLO Computation
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• Subtraction at NNLO
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