Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
Pith reviewed 2026-05-22 20:17 UTC · model grok-4.3
The pith
The 2023 Les Houches report updates the wishlist of fixed-order calculations needed for Standard Model precision at the LHC.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
Recent progress has occurred in fixed-order computations for LHC applications, and specific processes and missing higher-order corrections are required to reach the theoretical accuracy that matches the anticipated experimental precision, as determined by community consensus at the 2023 Les Houches workshop.
What carries the argument
The Standard Model precision wishlist, a catalog of processes and required perturbative orders that guides LHC phenomenology calculations.
Load-bearing premise
The processes and corrections highlighted represent the highest-priority gaps based on current experimental plans and community consensus at the 2023 workshop.
What would settle it
Experimental results showing that the listed processes and corrections do not set the limiting precision or that other processes have become more urgent with updated data.
Figures
read the original abstract
Les Houches returned to an in-person format in 2023 and the bi-yearly tradition of updating the standard model precision wishlist has continued. In this work we review recent progress (since Les Houches 2021) in fixed-order computations for LHC applications. In addition, necessary ingredients for such calculations such as parton distribution functions, amplitudes, and subtraction methods are discussed. Finally, we indicate processes and missing higher-order corrections that are required to reach the theoretical accuracy that matches the anticipated experimental precision.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript is the 2023 update of the Les Houches Standard Model precision wishlist. It reviews fixed-order progress since the 2021 edition for LHC processes, covers supporting ingredients (PDFs, amplitudes, subtraction methods), and lists specific processes together with the higher-order corrections required to reach the theoretical accuracy matching anticipated experimental precision.
Significance. As a community consensus document that compiles recent advances and identifies priority calculations, the report provides a useful reference point for theorists and phenomenologists working on LHC precision. Its value lies in documenting the current state of the field and focusing effort on the corrections needed to keep theory uncertainties below experimental targets.
minor comments (1)
- The abstract and introduction could more explicitly state the time window covered (post-2021) and the criteria used to select the listed processes, to help readers quickly locate the updates relative to the previous wishlist.
Simulated Author's Rebuttal
We thank the referee for their positive assessment of the manuscript and their recommendation to accept.
Circularity Check
No significant circularity identified
full rationale
This is a community status report compiling workshop consensus on recent fixed-order progress and a wishlist of needed higher-order corrections for LHC processes. Its central claim is descriptive (progress occurred; these items are required to match anticipated precision) rather than a deductive or calculational assertion. No internal derivations, equations, predictions, or fitted quantities are produced that could reduce to inputs by construction. The prioritization is presented as the outcome of the 2023 Les Houches discussions, with no self-citation load-bearing steps or ansatz smuggling. The document is self-contained against external benchmarks as a summary report.
Axiom & Free-Parameter Ledger
Forward citations
Cited by 10 Pith papers
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The spectrum of Feynman-integral geometries at two loops
Two-loop Feynman integrals involve Riemann spheres, elliptic curves, hyperelliptic curves of genus 2 and 3, K3 surfaces, and a rationalizable Del Pezzo surface of degree 2.
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All-loop four-quark Bethe-Salpeter kernel
The all-loop bare perturbative part of the four-quark Bethe-Salpeter kernel is computed analytically in the large-Nf limit of massless QCD.
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Two-loop leading-color QCD corrections for Higgs plus two-jet production in the heavy-top limit
Analytic expressions for the finite remainders of two-loop leading-color helicity amplitudes in Higgs plus two-jet production are obtained in the heavy-top effective theory using numerical unitarity and a new partial-...
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Complete NLO corrections to off-shell $\boldsymbol{t\bar{t}}$ production in the $\boldsymbol{\ell+j}$ decay channel
Complete NLO QCD plus EW corrections are calculated for off-shell ttbar production in the lepton-plus-jets channel, including all doubly, singly and non-resonant diagrams with their interferences.
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Two-loop all-plus helicity amplitudes for self-dual Higgs boson with gluons via unitarity cut constraints
Two-loop all-plus helicity amplitudes for self-dual Higgs plus gluons are obtained via four-dimensional unitarity cuts into one-loop and tree amplitudes plus finite-field tensor reduction.
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Non-factorisable electroweak virtual corrections to single-resonant processes
Non-factorisable two-loop EW virtual corrections to single-resonant processes reduce to an iteration of the one-loop result plus a new light-fermion contribution in dimensional regularization and are specific to singl...
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Les Houches study on inclusive jet production at NNLO+NNLL
NNLL resummation shows that scale variations drastically underestimate higher-order uncertainties in NNLO inclusive jet cross sections for typical jet radii, rendering such estimates unreliable.
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Inclusive charm and bottom quark pair production cross sections at hadron colliders at next-to-next-to-leading-order accuracy
NNLO QCD calculations using the MaunaKea code enhance c cbar and b bbar production cross sections by up to a factor of two over NLO predictions, reduce scale uncertainties, and match experimental data from 10 GeV to 1...
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The status of theory in the electroweak sector: Radiative corrections, salient features, approximations
Electroweak radiative corrections are essential for accurate collider predictions, with current techniques and progress illustrated through di-boson production, vector-boson scattering, and tri-boson production.
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Precision calculations for electroweak multi-boson processes
Electroweak corrections reach about -16% for like-sign WW scattering and -7% for triple-W production at the LHC, even for integrated cross sections, and the paper discusses approximations to full off-shell calculations.
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discussion (0)
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