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Events with Isolated Leptons and Missing Transverse Momentum and Measurement of W Production at HERA

F.D. Aaron C. Alexa V. Andreev B. Antunovic S. Aplin A. Asmone A. Astvatsatourov S. Backovic A. Baghdasaryan E. Barrelet 1 W. Bartel K. Begzsuren O. Behnke A. Belousov J.C. Bizot 2 V. Boudry 3 I. Bozovic-Jelisavcic J. Bracinik G. Brandt M. Brinkmann V. Brisson 2 D. Bruncko A. Bunyatyan G. Buschhorn L. Bystritskaya A.J. Campbell K.B. Cantun Avila F. Cassol-Brunner 4 K. Cerny V. Cerny V. Chekelian A. Cholewa J.G. Contreras J.A. Coughlan G. Cozzika 5 J. Cvach J.B. Dainton K. Daum M. De'Ak Y. de Boer B. Delcourt 2 M. del Degan J. Delvax A. de Roeck E.A. de Wolf C. Diaconu 4 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 5 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 3 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 4 R. Horisberger T. Hreus M. Jacquet 2 M.E. Janssen X. Janssen V. Jemanov L. Jönsson A.W. Jung H. Jung M. Kapichine J. Katzy I.R. Kenyon C. Kiesling M. Klein C. Kleinwort T. Klimkovich T. Kluge A. Knutsson R. Kogler V. Korbel P. Kostka M. Kraemer K. Krastev J. Kretzschmar A. Kropivnitskaya K. Kr¨uger K. Kutak M.P.J. Landon W. Lange G. Laˇstoviˇcka-Medin P. Laycock A. Lebedev G. Leibenguth V. Lendermann S. Levonian G. Li 2 K. Lipka A. Liptaj B. List J. List N. Loktionova R. Lopez-Fernandez V. Lubimov L. Lytkin A. Makankine E. Malinovski P. Marage Ll. Marti H.-U. Martyn S.J. Maxfield A. Mehta K. Meier A.B. Meyer H. Meyer J. Meyer V. Michels S. Mikocki I. Milcewicz-Mika F. Moreau 3 A. Morozov J.V. Morris M.U. Mozer M. Mudrinic K. M¨uller P. Mur'ın B. Naroska Th. Naumann P.R. Newman C. Niebuhr A. Nikiforov G. Nowak K. Nowak M. Nozicka B. Olivier J.E. Olsson S. Osman D. Ozerov V. Palichik I. Panagouliasl M. Pandurovic Th. Papadopouloul C. Pascaud 2 G.D. Patel O. Pejchal E. Perez 5 A. Petrukhin I. Picuric S. Piec D. Pitzl R. Plaˇcakyt˙e R. Polifka B. Povh T. Preda V. Radescu A.J. Rahmat N. Raicevic A. Raspiareza T. Ravdandorj P. Reimer E. Rizvi P. Robmann B. Roland R. Roosen A. Rostovtsev M. Rotaru J.E. Ruiz Tabasco Z. Rurikova S. Rusakov D. Šálek D.P.C. Sankey M. Sauter E. Sauvan 4 S. Schmitt C. Schmitz L. Schoeffel 5 A. Schöning H.-C. Schultz-Coulon F. Sefkow R.N. Shaw-West I. Sheviakov L.N. Shtarkov S. Shushkevich T. Sloan I. Smiljanic Y. Soloviev P. Sopicki D. South V. Spaskov A. Specka 3 Z. Staykova M. Steder B. Stella G. Stoicea U. Straumann D. Sunar T. Sykora V. Tchoulakov G. Thompson P.D. Thompson T. Toll F. Tomasz T.H. Tran 2 D. Traynor T.N. Trinh 4 P. Tru¨ol I. Tsakov B. Tseepeldorj J. Turnau K. Urban A. Valk'Arov'A Corentin Vallée 4 P. van Mechelen A. Vargas Trevino Y. Vazdik S. Vinokurova V. Volchinski D. Wegener Ch. Wissing E. W¨unsch J. Žáček J. Zálešák Zhiqing Zhang 2 A. Zhokin T. Zimmermann H. Zohrabyan F. Zomer 2
Abstract : Events with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full e^\pm 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 \pm 0.25 (stat.) \pm 0.14 (sys.) pb, in agreement with the Standard Model expectation. The data are also used to establish limits on the WW\gamma gauge couplings and for a measurement of the W boson polarisation.
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Submitted on : Friday, January 9, 2009 - 3:00:51 PM
Last modification on : Wednesday, October 14, 2020 - 3:50:33 AM

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F.D. Aaron, C. Alexa, V. Andreev, B. Antunovic, S. Aplin, et al.. Events with Isolated Leptons and Missing Transverse Momentum and Measurement of W Production at HERA. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2009, 64, pp.251-271. ⟨10.1140/epjc/s10052-009-1160-6⟩. ⟨in2p3-00351546⟩

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