New next-to-leading-power effective W approximation PDFs for W/Z bosons, plus kinematic consistency conditions that make the parton approximation reliable for scattering energies around 800 GeV and above.
Electroweak Evolution Equations
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abstract
Enlarging a previous analysis, where only fermions and transverse gauge bosons were taken into account, we write down infrared-collinear evolution equations for the Standard Model of electroweak interactions computing the full set of splitting functions. Due to the presence of double logs which are characteristic of electroweak interactions (Bloch-Nordsieck violation), new infrared singular splitting functions have to be introduced. We also include corrections related to the third generation Yukawa couplings.
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Weak bosons as partons below 10 TeV partonic center-of-momentum
New next-to-leading-power effective W approximation PDFs for W/Z bosons, plus kinematic consistency conditions that make the parton approximation reliable for scattering energies around 800 GeV and above.