Initial-Final and Initial-Initial antenna functions for real radiation at next-to-leading order
arXiv:2308.10829 · doi:10.1007/JHEP12(2023)171
Abstract
The antenna subtraction method has achieved remarkable success in various processes relevant to the Large Hadron Collider. In Reference [1], an algorithm was proposed for constructing real-radiation antenna functions for electron-positron annihilation, directly from specified unresolved limits, accommodating any number of real emissions. Here, we extend this algorithm to build antennae involving partons in the initial state, specifically the initial-final and initial-initial antennae. Using this extended algorithm, we explicitly construct all NLO QCD antenna functions and compare them with previously extracted antenna functions derived from matrix elements. Additionally, we rigorously match the integration of the antenna functions over the initial-final and initial-initial unresolved phase space with the previous approach, providing an independent validation of our results. The improved antenna functions are more compact and reduced in number, making them more readily applicable for higher-order calculations.
33 pages, updated to match JHEP submission
References in corpus (18)
- Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
- An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
- Higgs boson gluon-fusion production in N3LO QCD
- A novel subtraction scheme for double-real radiation at NNLO
- Automation of next-to-leading order computations in QCD: the FKS subtraction
- A simple shower and matching algorithm
- Four-dimensional formulation of the sector-improved residue subtraction scheme
- Automation of the Dipole Subtraction Method in MadGraph/MadEvent
- Vector-Boson Fusion Higgs Pair Production at NLO
- Infrared structure of e+e- --> 3 jets at NNLO
- Two-loop splitting amplitudes and the single-real contribution to inclusive Higgs production at N3LO
- May the four be with you: Novel IR-subtraction methods to tackle NNLO calculations
- NLO Antenna Subtraction with Massive Fermions
- Higgs production in bottom quark fusion: Matching the 4- and 5-flavour schemes to third order in the strong coupling
- Triple collinear splitting functions at NLO for scattering processes with photons
- A general algorithm to build mixed real and virtual antenna functions for higher-order calculations
- Double real radiation corrections to gluon scattering at NNLO
- Status of jet cross sections to NNLO
Cited by in corpus (6)
- The colourful antenna subtraction method
- Generalised Antenna Functions for Higher-Order Calculations
- Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
- Jet production at electron-positron colliders at next-to-next-to-next-to-leading order in QCD
- The Unresolved Behaviour of Polarized Scattering Matrix Elements at NNLO in QCD
- Monte Carlo Event Generators