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 single-resonance exchange.
Large electroweak corrections to vector-boson scattering at the Large Hadron Collider
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abstract
For the first time full next-to-leading-order electroweak corrections to off-shell vector-boson scattering are presented. The computation features the complete matrix elements, including all non-resonant and off-shell contributions, to the electroweak process $\mathrm{p} \mathrm{p} \to \mu^+ \nu_\mu \mathrm{e}^+ \nu_{\mathrm{e}} \mathrm{j} \mathrm{j}$. It is fully differential, and event selections are applied to the final states such that the predictions can be directly compared to experimental measurements. The corrections are surprisingly large, reaching -16% for the fiducial cross section and up to -40% in the tails of distributions. These large corrections are due to enhanced logarithms in the bosonic virtual corrections.
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CMS observes electroweak W±W± and WZ production with two jets at 13.6 TeV with >5σ significance in all-leptonic final states using 171 fb⁻¹ of data.
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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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 single-resonance exchange.
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First measurements of vector boson scattering in W$^\pm$W$^{\pm}$ and WZ production in all-leptonic final states at $\sqrt{s}$ = 13.6 TeV
CMS observes electroweak W±W± and WZ production with two jets at 13.6 TeV with >5σ significance in all-leptonic final states using 171 fb⁻¹ of data.
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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.