li-eventswith-2009.pdf (1.35 MB)
Events with isolated leptons and missing transverse momentum and measurement of W production at HERA
journal contribution
posted on 2009-01-01, 00:00 authored by F D Aaron, C Alexa, V Andreev, B Antunovic, S Aplin, A Asmone, A Astvatsatourov, S Backovic, A Baghdasaryan, E Barrelet, W Bartel, K Begzsuren, O Behnke, A Belousov, J C Bizot, V Boudry, I Bozovic-Jelisavcic, J Bracinik, G Brandt, M Brinkmann, V Brisson, D Bruncko, A Bunyatyan, G Buschhorn, L Bystritskaya, A J Campbell, K B Cantun Avila, F Cassol-Brunner, K Cerny, V Cerny, V Chekelian, A Cholewa, J G Contreras, J A Coughlan, G Cozzika, J Cvach, J B Dainton, K Daum, M Deák, Y De Boer, B Delcourt, M Del Degan, J Delvax, A De Roeck, E A De Wolf, C Diaconu, V Dodonov, A Dossanov, A Dubak, G Eckerlin, V Efremenko, S Egli, A Eliseev, E Elsen, S Essenov, A Falkiewicz, P J W Faulkner, L Favart, A Fedotov, R Felst, J Feltesse, J Ferencei, D J Fischer, M Fleischer, A Fomenko, E Gabathuler, J Gayler, S Ghazaryan, A Glazov, I Glushkov, L Goerlich, M Goettlich, N Gogitidze, M Gouzevitch, C Grab, T Greenshaw, B R Grell, G Grindhammer, S Habib, D Haidt, M Hansson, C Helebrant, R C W Henderson, E Hennekemper, H Henschel, G Herrera, M Hildebrandt, K H Hiller, D Hoffmann, R Horisberger, T Hreus, M Jacquet, M E Janssen, X Janssen, V Jemanov, L Jönsson, A W Jung, H Jung, M Kapichine, J KatzyEvents with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb -1. Within the Standard Model, events with isolated leptons and missing transverse momentum mainly originate from the production of single W bosons. The total single W boson production cross section is measured as 1.14±0.25 (stat.)±0.14 (sys.) pb, in agreement with the Standard Model expectation. The data are also used to establish limits on the WW γ gauge couplings and for a measurement of the W boson polarisation. © 2009 Springer-Verlag / Società Italiana di Fisica.
