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Search for excited neutrinos at HERA

C. Adloff V. Andreev B. Andrieu 1 T. Anthonis V. Arkadov A. Astvatsatourov A. Babaev J. Bahr P. Baranov E. Barrelet 2 W. Bartel P. Bate J. Becker A. Beglarian O. Behnke C. Beier A. Belousov T. Benisch C. Berger T. Berndt J.C. Bizot 3 J. Boehme V. Boudry 1 W. Braunschweig V. Brisson 3 H.B. Broker D.P. Brown W. Bruckner D. Bruncko J. Burger F.W. Busser A. Bunyatyan A. Burrage G. Buschhorn L. Bystritskaya A.J. Campbell J. Cao 3 S. Caron F. Cassol-Brunner 4 D. Clarke B. Clerbaux C. Collard J.G. Contreras Y.R. Coppens J.A. Coughlan M.C. Cousinou 4 B.E. Cox G. Cozzika J. Cvach J.B. Dainton W.D. Dau K. Daum M. Davidsson B. Delcourt 3 N. Delerue 4 R. Demirchyan A. de Roeck E.A. de Wolf C. Diaconu 4 J. Dingfelder P. Dixon V. Dodonov J.D. Dowell A. Droutskoi A. Dubak C. Duprel G. Eckerlin D. Eckstein V. Efremenko S. Egli R. Eichler F. Eisele E. Eisenhandler M. Ellerbrock E. Elsen M. Erdmann W. Erdmann P.J.W. Faulkner L. Favart A. Fedotov R. Felst J. Ferencei S. Ferron 1 M. Fleischer Y.H. Fleming G. Flugge A. Fomenko I. Foresti J. Formanek G. Franke E. Gabathuler K. Gabathuler J. Garvey J. Gassner J. Gayler R. Gerhards C. Gerlich S. Ghazaryan L. Goerlich N. Gogitidze M. Goldberg C. Grab H. Grassler T. Greenshaw G. Grindhammer T. Hadig D. Haidt L. Hajduk J. Haller W.J. Haynes B. Heinemann G. Heinzelmann R.C.W. Henderson S. Hengstmann H. Henschel R. Heremans G. Herrera I. Herynek M. Hildebrandt M. Hilgers K.H. Hiller J. Hladky P. Hoting D. Hoffmann 4 R. Horisberger S. Hurling M. Ibbotson C. Issever M. Jacquet 3 M. Jaffre 3 L. Janauschek X. Janssen V. Jemanov L. Jonsson C. Johnson D.P. Johnson M.A.S. Jones H. Jung D. Kant M. Kapichine M. Karlsson O. Karschnick F. Keil N. Keller J. Kennedy I.R. Kenyon S. Kermiche 4 C. Kiesling P. Kjellberg M. Klein C. Kleinwort T. Kluge G. Knies B. Koblitz S.D. Kolya V. Korbel P. Kostka S.K. Kotelnikov R. Koutouev A. Koutov H. Krehbiel J. Kroseberg K. Kruger A. Kupper T. Kuhr T. Kurca R. Lahmann D. Lamb M.P.J. Landon W. Lange T. Lastovicka P. Laycock E. Lebailly 3 A. Lebedev B. Leiner R. Lemrani V. Lendermann S. Levonian M. Lindstroem B. List E. Lobodzinska B. Lobodzinski A. Loginov N. Loktionova V. Lubimov S. Luders D. Luke L. Lytkin H. Mahlke-Kruger N. Malden E. Malinovski I. Malinovski R. Maracek P. Marage J. Marks R. Marshall H.U. Martyn J. Martyniak S.J. Maxeld D. Meer A. Mehta K. Meier A.B. Meyer H. Meyer J. Meyer 1 P.O. Meyer S. Mikocki D. Milstead T. Mkrtchyan R. Mohr S. Mohrdieck M.N. Mondragon F. Moreau 1 A. Morozov J.V. Morris K. Muller P. Murin V. Nagovizin B. Naroska J. Naumann T. Naumann G. Nellen P.R. Newman T.C. Nicholls F. Niebergall C. Niebuhr O. Nix G. Nowak J.E. Olsson D. Ozerov V. Panassik C. Pascaud 3 G.D. Patel M. Peez 4 Emile Perez J.P. Phillips D. Pitzl R. Poschl 3 I. Potachnikova B. Povh K. Rabbertz G. Radel J. Rauschenberger P. Reimer B. Reisert D. Reyna C. Risler E. Rizvi P. Robmann R. Roosen A. Rostovtsev S. Rusakov K. Rybicki D.P.C. Sankey J. Scheins F.P. Schilling P. Schleper D. Schmidt S. Schmidt S. Schmitt M. Schneider 4 L. Schoeffel A. Schoning T. Schorner V. Schroder H.C. Schultz-Coulon C. Schwanenberger K. Sedlak F. Sefkow V. Shekelyan I. Sheviakov L.N. Shtarkov Y. Sirois 1 T. Sloan P. Smirnov Y. Soloviev D. South V. Spaskov A. Specka 1 H. Spitzer R. Stamen B. Stella J. Stiewe U. Straumann M. Swart M. Tasevsky V. Chernyshov S. Chetchelnitski Graham. Thompson P.D. Thompson N. Tobien D. Traynor P. Truol G. Tsipolitis I. Tsurin J. Turnau J.E. Turney E. Tzamariudaki S. Udluft Martin Urban A. Usik S. Valkar A. Valkarova C. Vallee 4 P. van Mechelen S. Vassiliev Y. Vazdik A. Vichnevski K. Wacker R. Wallny B. Waugh G. Weber M. Weber D. Wegener C. Werner M. Werner N. Werner G. White S. Wiesand T. Wilksen M. Winde G.G. Winter C. Wissing M. Wobisch E.E. Woehrling E. Wunsch A.C. Wyatt J. Zacek J. Zalesak Zhiqing Zhang 3 A. Zhokin F. Zomer 3 J. Zsembery M. Zur Nedden
Abstract : We present a search for excited neutrinos using ep data taken by the H1 experiment at HERA at a center-of-mass energy of 318 GeV with an integrated luminosity of 15 pb1. No evidence for excited neutrino production is found. Mass dependent exclusion limits are determined for the ratio of the coupling to the compositeness scale, f/, independently of the relative couplings to the SU(2) and U(1) gauge bosons. These limits extend the excluded region to higher masses than has been possible in previous searches at other colliders.
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Submitted on : Friday, February 1, 2002 - 11:21:14 AM
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C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, V. Arkadov, et al.. Search for excited neutrinos at HERA. Physics Letters B, Elsevier, 2002, 525, pp.9-16. ⟨in2p3-00011171⟩

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