|
|
Observation of events with isolated leptons and missing P_T and comparison to W production at HERA |
| Reference |
C Diaconu, talk presented at DIS 2001, April 2001 |
| Document |
Conference paper
|
| Figures |
(1a)
(1b)
(1c)
(1d)
(1e)
(1f)
(2a)
(2b)
(2c)
(2d)
(2e)
(2f)
(3a)
(3b)
(3c)
(3d)
(4a)
(4b)
(4c)
(4d)
(5)
(6)
| | Tables |
(3)
(4)
(5)
(6)
|
| Contact |
Christinel Diaconu, Andrew Mehta |
| Abstract |
A search for events with a high energy isolated lepton and missing transverse momentum has been performed at the electron-proton collider HERA using an integrated luminosity of 13.6 pb^-1 in e^- p scattering and 101.6 pb^-1 in e^+ p scattering. Within the Standard Model such events are expected to be due to W boson production, with subsequent leptonic decay. The analysis has been tuned to maximise the acceptance of such events, and reject other Standard Model processes. In e^- p interactions no events are observed, consistent with the expectation of the Standard Model in this low luminosity sample. In the e^+ p data 18 events are seen in the electron and muon channel compared to an expectation of 10.5 +-2.5 dominated by W production (8.2 +-2.5). The excess above the expectation is mainly due to events with transverse momentum of the hadronic system greater than 25 GeV where 10 events are found compared to 2.8 +-0.7 expected. |
| Links |
back to overview listing
H1 internal information
| | |