Multiboson and VBS measurements in ATLAS and CMS

Santiago Folgueras

Authors on Pith no claims yet

Pith reviewed 2026-05-10 09:13 UTC · model grok-4.3

classification ✦ hep-ex

keywords multiboson productionvector boson scatteringelectroweak gauge sectoranomalous gauge couplingseffective field theorydiboson cross sectionstriboson processespolarisation observables

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The pith

LHC measurements of multiboson production and vector boson scattering test the electroweak gauge sector of the Standard Model while constraining anomalous couplings.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper reviews recent measurements of processes in which multiple electroweak bosons are produced or scatter off one another. These processes probe the self-interactions of the gauge bosons that mediate the weak force. A reader would care because agreement with predictions would confirm that the Standard Model's gauge symmetry holds at the highest energies yet reached, while deviations could indicate new physics appearing through modified interactions. The data also translate into quantitative limits on hypothetical extra terms in the theory that might become visible at higher energies.

Core claim

Recent measurements at the LHC of multiboson and vector boson scattering processes constitute a comprehensive test of the electroweak gauge sector of the Standard Model. They include precision diboson cross-section measurements, novel CP-sensitive and polarisation observables in W gamma production, observations of vector boson scattering in semileptonic and fully leptonic final states including the first ones at a collision energy of 13.6 TeV, and observations of triboson processes. These results provide stringent constraints on anomalous gauge couplings in the effective field theory framework.

What carries the argument

Production rates, angular distributions, and polarisation states in multiboson and vector boson scattering processes, used to test gauge boson self-couplings through comparison to Standard Model predictions and effective field theory extensions.

Load-bearing premise

The reported measurements are correctly interpreted within the Standard Model and effective field theory frameworks without significant unaccounted systematic effects.

What would settle it

A measured cross section, angular distribution, or polarisation observable in vector boson scattering or multiboson production that deviates from the Standard Model prediction by more than the combined statistical and systematic uncertainties would indicate either new physics or an error in the current interpretation.

read the original abstract

A review of recent multiboson and vector boson scattering (VBS) measurements from the ATLAS and CMS Collaborations at the LHC is presented. Results are reported from precision diboson cross-section measurements, novel CP-sensitive and polarisation observables in $W\gamma$ production, VBS observations in semileptonic and fully leptonic final states including the first measurements at $\sqrt{s}$ = 13.6 TeV, and observations of triboson processes. These results constitute a comprehensive test of the electroweak gauge sector of the Standard Model, and provide stringent constraints on anomalous gauge couplings in the effective field theory framework.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Desk Editor's Note private letter to a colleague

This is a review summarizing recent ATLAS and CMS multiboson and VBS measurements but adds no new results or analysis.

read the letter

This paper is a review summarizing recent multiboson and vector boson scattering measurements from the ATLAS and CMS experiments. It brings together results on precision diboson cross sections, CP-sensitive observables in W gamma, VBS in various final states including at 13.6 TeV, and triboson processes, but it introduces no new data, methods, or interpretations of its own. What it does well is provide a consolidated overview of how these processes are probing the electroweak gauge sector of the Standard Model. The summary highlights the constraints on anomalous gauge couplings through the effective field theory framework, drawing directly from the published experimental work. This kind of compilation can be handy for keeping track of the experimental progress in one document. The soft spots are minor but real for a review of this type. It relies completely on the soundness of the cited ATLAS and CMS papers without reanalyzing or critiquing the details like fitting procedures or systematic uncertainties. Since the full text is a summary, there are no equations or new derivations to check for consistency here. The central claims follow from the existence of those measurements rather than any internal logic in this manuscript. This paper is aimed at high-energy physicists who want an update on the status of these tests without reading every individual result paper. A reader interested in the latest LHC constraints on the Standard Model or new physics in the electroweak sector would get value from the organization of the material. It could be worth discussing in a reading group focused on experimental results. I would not cite this work in my own papers because the original measurements are the proper references. For peer review, I recommend sending it to referees if the context is a conference proceedings or a review journal, as the summary appears accurate and relevant, though it will likely require only light revisions.

Referee Report

0 major / 2 minor

Summary. The manuscript is a review summarizing recent multiboson and vector boson scattering (VBS) measurements from the ATLAS and CMS collaborations at the LHC. It covers precision diboson cross-section measurements, novel CP-sensitive and polarisation observables in Wγ production, VBS observations in semileptonic and fully leptonic final states including first results at √s = 13.6 TeV, and observations of triboson processes. The central claim is that these results constitute a comprehensive test of the electroweak gauge sector of the Standard Model and provide stringent constraints on anomalous gauge couplings in the effective field theory framework.

Significance. This compilation provides a useful overview of the experimental status of multiboson and VBS processes, which are key probes of the electroweak sector. By aggregating results from both ATLAS and CMS, including recent data at 13.6 TeV, the review illustrates the precision achieved in testing SM predictions and the resulting EFT constraints, serving as a reference point for the field.

minor comments (2)

The abstract states that results 'provide stringent constraints' on anomalous couplings but does not quantify the improvement relative to prior limits or list the specific operators constrained; adding a brief summary sentence would improve clarity for readers.
As a conference-style review, the manuscript would benefit from a table or bullet list in the introduction or conclusion that maps each measurement to its primary reference (e.g., ATLAS or CMS paper) and reported significance, to aid navigation.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for their positive assessment of the manuscript, including the recognition of its value as a comprehensive overview of multiboson and VBS measurements from ATLAS and CMS, and for the recommendation to accept.

Circularity Check

0 steps flagged

No significant circularity: review summarizes external published results

full rationale

The manuscript is a conference-style review that reports and interprets already-published ATLAS and CMS measurements on diboson, VBS, and triboson processes. No new derivations, equations, fits, or predictions are introduced within the document itself. The central claim (comprehensive test of the electroweak sector and constraints on anomalous couplings) follows directly from the existence and reported outcomes of those external measurements rather than from any internal construction, self-definition, or self-citation chain. No load-bearing steps reduce to the paper's own inputs by construction.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

No new theoretical derivations, free parameters, axioms, or invented entities are introduced; the paper compiles experimental results from prior publications.

pith-pipeline@v0.9.0 · 5390 in / 937 out tokens · 57519 ms · 2026-05-10T09:13:47.863205+00:00 · methodology

discussion (0)

Reference graph

Works this paper leans on

11 extracted references · 3 canonical work pages · 1 internal anchor

[1]

The ATLAS Experiment at the CERN Large Hadron Collider

ATLAS Collaboration. The ATLAS Experiment at the CERN Large Hadron Collider. JINST, 3:S08003, 2008

2008
[2]

The CMS Experiment at the CERN LHC.JINST, 3:S08004, 2008

CMS Collaboration. The CMS Experiment at the CERN LHC.JINST, 3:S08004, 2008

2008
[3]

Development of the CMS detector for the CERN LHC Run 3.JINST, 19(05):P05064, 2024

CMS Collaboration. Development of the CMS detector for the CERN LHC Run 3.JINST, 19(05):P05064, 2024

2024
[4]

Measurements of ZZ→ℓℓνν and ZZjj→ℓℓννjj productions in ppcollisions at √s= 13 TeV with the ATLAS detector

ATLAS Collaboration. Measurements of ZZ→ℓℓνν and ZZjj→ℓℓννjj productions in ppcollisions at √s= 13 TeV with the ATLAS detector. arXiv:2511.15569, 2025

work page arXiv 2025
[5]

Measurement and interpretation of inclusive W γ production in proton-proton collisions at √s = 13 TeV using the ATLAS detector

ATLAS Collaboration. Measurement and interpretation of inclusive W γ production in proton-proton collisions at √s = 13 TeV using the ATLAS detector. arXiv:2603.22478, 2026

work page arXiv 2026
[6]

Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS Collaboration. Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from pp collisions at √s = 13 TeV with the ATLAS detector. arXiv:2503.17461, 2025

work page internal anchor Pith review Pith/arXiv arXiv 2025
[7]

Combination of vector boson scattering measurements with fully- and semi-leptonic final states in proton-proton collisions at sqrt(s) = 13 TeV

CMS Collaboration. Combination of vector boson scattering measurements with fully- and semi-leptonic final states in proton-proton collisions at sqrt(s) = 13 TeV. CMS-PAS-SMP- 24-013, 2025

2025
[8]

Observation of electroweak ZZ production in the ℓℓννjj channel

CMS Collaboration. Observation of electroweak ZZ production in the ℓℓννjj channel. CMS-PAS-SMP-23-001, 2025

2025
[9]

First measurements of VBS at √s = 13.6 TeV in leptonic W ±W ± andW Zchannels

CMS Collaboration. First measurements of VBS at √s = 13.6 TeV in leptonic W ±W ± andW Zchannels. CMS-PAS-SMP-25-013, 2026

2026
[10]

Observation of V V Z production at √s = 13 TeV with the ATLAS detector.Phys

ATLAS Collaboration. Observation of V V Z production at √s = 13 TeV with the ATLAS detector.Phys. Lett. B, 866:139527, 2025

2025
[11]

Measurement of W W Z and ZH production cross sections at √s = 13 and 13.6 TeV.Phys

CMS Collaboration. Measurement of W W Z and ZH production cross sections at √s = 13 and 13.6 TeV.Phys. Rev. Lett., 135:091802, 2025

2025