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Observation of events with an isolated high energy lepton and missing transverse momentum at HERA
Ist Teil von
The European physical journal. C, Particles and fields, 1998-10, Vol.5 (4), p.575-584
Ort / Verlag
Heidelberg: Springer Nature B.V
Erscheinungsjahr
1998
Quelle
SpringerLink_现刊
Beschreibungen/Notizen
A search for events with an imbalance in transverse momentum and with isolated high energy leptons has been carried out at the positron-proton collider HERA. One event with an and five events with a are found together with evidence for undetected particles carrying transverse momentum. Within the Standard Model the dominant origin of events with this kind of topology is the production of W bosons with subsequent leptonic decay. Three of the six events are within measurement errors found in a region of phase space likely to be populated by this process, while the remaining events show kinematic properties which are atypical of all Standard Model processes considered.