Publication

Measurements of electroweak production of a photon in association with two jets in proton-proton collisions at s=13 TeV

2026

Abstract

The first observation of electroweak production of a photon in association with two forward jets in proton-proton collisions is presented. The measurement uses data recorded by the CMS experiment at the LHC during 2016–2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb−1. The analysis is performed in a region enriched in photon production via vector boson fusion, with a requirement on the transverse momentum of the photon to exceed 200 GeV. The cross section is measured to be 202−32+36 fb, at a significance with respect to the null hypothesis that exceeds five standard deviations. This is in agreement with the standard model prediction of 177−12+13 fb. Differential cross sections are measured as a function of various observables. Limits are set on dimension-6 effective field theory operators that contribute to the WWγ interaction. The observed 95% confidence intervals for the corresponding Warsaw basis Wilson coefficients cW and cHWB are [−0.11, 0.16] and [−1.6, 1.5], respectively.

Official source

https://infoscience.epfl.ch/entities/publication/22052dfb-7069-44c3-a0f0-71facf087e2c

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/22052dfb-7069-44c3-a0f0-71facf087e2c

About this result

Related concepts (32)

Higgs boson

The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson with zero spin, even (positive) parity, no electric charge, and no colour charge that couples to (interacts with) mass. It is also very unstable, decaying into other particles almost immediately upon generation.

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Related publications (32)

Measurements of electroweak production of a photon in association with two jets in proton-proton collisions at s=13 TeV

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