Different polarization definitions in same-sign $WW$ scattering at the LHC

Understand

We study the polarization of positively charged $W$'s in the scattering of massive electroweak bosons at hadron colliders.

• We rely on the separation of weak boson polarizations in the gauge-invariant, doubly-resonant part of the amplitude in Monte Carlo simulations.
• Polarizations depend on the reference frame in which they are defined.
• We discuss the change in polarization fractions and in kinematic distributions arising from defining polarization vectors in two different reference frames which have been employed in recent experimental analyses.