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Tau lepton production in ep collisions at HERA.

A. Aktas V. Andreev T. Anthonis S. Aplin A. Asmone A. Astvatsatourov A. Babaev S. Backovic J. Bahr A. Baghdasaryan P. Baranov E. Barrelet 1 W. Bartel S. Baudrand 2 S. Baumgartner J. Becker M. Beckingham O. Behnke O. Behrendt A. Belousov Ch. Berger N. Berger J.C. Bizot 2 M.-O. Boenig V. Boudry 3 J. Bracinik G. Brandt V. Brisson 2 D.P. Brown D. Bruncko F.W. Busser A. Bunyatyan G. Buschhorn L. Bystritskaya A.J. Campbell S. Caron F. Cassol-Brunner 4 K. Cerny V. Cerny V. Chekelian J.G. Contreras J.A. Coughlan B.E. Cox G. Cozzika J. Cvach J.B. Dainton W.D. Dau K. Daum Y. de Boer B. Delcourt 2 A. de Roeck K. Desch E.A. de Wolf C. Diaconu 4 V. Dodonov A. Dubak G. Eckerlin V. Efremenko S. Egli R. Eichler F. Eisele M. Ellerbrock W. Erdmann S. Essenov A. Falkewicz P.J.W. Faulkner L. Favart A. Fedotov R. Felst J. Ferencei L. Finke M. Fleischer P. Fleischmann Y.H. Fleming G. Flucke A. Fomenko I. Foresti G. Franke T. Frisson 3 E. Gabathuler E. Garutti J. Gayler C. Gerlich S. Ghazaryan S. Ginzburgskaya A. Glazov I. Glushkov L. Goerlich M. Goettlich N. Gogitidze S. Gorbounov C. Goyon C. Grab T. Greenshaw M. Gregori B.R. Grell G. Grindhammer C. Gwilliam D. Haidt L. Hajduk M. Hansson G. Heinzelmann R.C.W. Henderson H. Henschel O. Henshaw G. Herrera M. Hildebrandt K.H. Hiller D. Hoffmann 4 R. Horisberger A. Hovhannisyan T. Hreus S. Hussain M. Ibbotson M. Ismail M. Jacquet 2 L. Janauschek X. Janssen V. Jemanov L. Jonsson D.P. Johnson A.W. Jung H. Jung M. Kapichine J. Katzy N. Keller I.R. Kenyon C. Kiesling M. Klein C. Kleinwort T. Klimkovich T. Kluge G. Knies A. Knutsson V. Korbel P. Kostka K. Krastev J. Kretzschmar A. Kropivnitskaya K. Kruger J. Kuckens M.P.J. Landon W. Lange T. Lastovicka G. Lastovicka-Medin P. Laycock A. Lebedev G. Leibenguth V. Lendermann S. Levonian L. Lindfeld K. Lipka A. Liptaj B. List E. Lobodzinska N. Loktionova R. Lopez-Fernandez V. Lubimov A.-I. Lucaci-Timoce H. Lueders D. Luke T. Lux L. Lytkin A. Makankine N. Malden E. Malinovski S. Mangano P. Marage R. Marshall M. Martisikova H.-U. Martyn S.J. Maxfield D. Meer A. Mehta K. Meier A.B. Meyer H. Meyer J. Meyer S. Mikocki I. Milcewicz-Mika D. Milstead D. Mladenov A. Mohamed F. Moreau 3 A. Morozov J.V. Morris M.U. Mozer K. Muller P. Murin K. Nankov B. Naroska T. Naumann P.R. Newman C. Niebuhr A. Nikiforov D. Nikitin G. Nowak M. Nozicka R. Oganezov B. Olivier J.E. Olsson S. Osman D. Ozerov V. Palichik I. Panagoulias T. Papadopoulou C. Pascaud 2 G.D. Patel M. Peez E. Perez D. Perez-Astudillo A. Perieanu A. Petrukhin D. Pitzl R. Placakyte B. Portheault 2 B. Povh P. Prideaux N. Raicevic P. Reimer A. Rimmer C. Risler E. Rizvi P. Robmann B. Roland R. Roosen A. Rostovtsev Z. Rurikova S. Rusakov F. Salvaire D.P.C. Sankey E. Sauvan 4 S. Schätzel F.-P. Schilling S. Schmidt S. Schmitt C. Schmitz L. Schoeffel A. Schoning H.-C. Schultz-Coulon K. Sedlak F. Sefkow R.N. Shaw-West I. Sheviakov L.N. Shtarkov T. Sloan P. Smirnov Y. Soloviev D. South V. Spaskov A. Specka 3 B. Stella J. Stiewe I. Strauch U. Straumann V. Tchoulakov G. Thompson P.D. Thompson F. Tomasz D. Traynor P. Truol I. Tsakov G. Tsipolitis I. Tsurin J. Turnau E. Tzamariudaki Martin Urban A. Usik D. Utkin S. Valkar A. Valkarova C. Vallee 4 P. van Mechelen A. Vargas Trevino Y. Vazdik C. Veelken A. Vest S. Vinokurova V. Volchinski B. Vujicic K. Wacker J. Wagner G. Weber R. Weber D. Wegener C. Werner N. Werner M. Wessels B. Wessling C. Wigmore C. Wissing R. Wolf E. Wunsch S. Xella W. Yan V. Yeganov J. Zacek J. Zalesak Zhiqing Zhang 2 A. Zhelezov A. Zhokin Y.C. Zhu J. Zimmermann T. Zimmermann H. Zohrabyan F. Zomer 2
Abstract : The production of tau leptons in ep collisions is investigated using data recorded by the H1 detector at HERA in the period 1994-2000. Tau leptons are identified by detecting their decay products, using leptonic and hadronic decay modes. The cross section for the production of tau lepton pairs is measured for the first time at HERA. Furthermore, a search for events with an energetic isolated tau lepton and with large missing transverse momentum is performed. The results are found to be in agreement with the Standard Model predictions.
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Submitted on : Monday, January 8, 2007 - 10:29:26 AM
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A. Aktas, V. Andreev, T. Anthonis, S. Aplin, A. Asmone, et al.. Tau lepton production in ep collisions at HERA.. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2006, 48, pp.699-714. ⟨10.1140/epjc/s10052-006-0028-2⟩. ⟨in2p3-00078860⟩

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