Assertion: electron's momentum | /r/HasProperty | pt
Facets:
Source sentences:
text: At HERA, two experiments (H1 and ZEUS) study electron-proton collisions with a centre-of-mass energy of up to 320 GeV. The first measurements of multi-electron and multi-muon production at high trans-verse momentum (PT) in ep collisions have been published recently by the H1 Collaboration1,2.