Even 2 years ago, in May 2023, scientists from the CMS experimentation at the Large Hadron Collider wrote that the production of TWZ has a very low active cross section, which means that it is highly improbable that this process could be observed during proton collisions at LHC. The active cross-section of the tWZ process is about 0.14 pb, while the full unflexible cross-section of the active proton-proton collisions is about 100,000,000 pb. Now the same squad has reported that TWZ production has been observed in the large Hadron Collider.
