Multi-electron production at high transverse momenta in $ep$ collisions at HERA - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles European Physical Journal C: Particles and Fields Year : 2003

Multi-electron production at high transverse momenta in $ep$ collisions at HERA

A. Aktas , V. Andreev , T. Anthonis , A. Asmone , A. Babaev , S. Backovic , J. Bahr , P. Baranov , E. Barrelet (1) , W. Bartel , S. Baumgartner , J. Becker , M. Beckingham , O. Behnke , O. Behrendt , A. Belousov , C. Berger , T. Berndt , J.C. Bizot (2) , J. Bohme , M.O. Boenig , V. Boudry (3) , J. Bracinik , W. Braunschweig , V. Brisson (2) , H.B. Broker , D.P. Brown , D. Bruncko , F.W. Busser , A. Bunyatyan , G. Buschhorn , L. Bystritskaya , A.J. Campbell , S. Caron , F. Cassol-Brunner (4) , V. Chekelian , D. Clarke , 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 , B. Delcourt (2) , N. Delerue (4) , R. Demirchyan , A. de Roeck , E.A. de Wolf , C. Diaconu (4) , J. Dingfelder , V. Dodonov , J.D. Dowell , A. Dubak , C. Duprel , G. Eckerlin , V. Efremenko , S. Egli , R. Eichler , F. Eisele , M. Ellerbrock , E. Elsen , M. Erdmann , W. Erdmann , P.J.W. Faulkner , L. Favart , A. Fedotov , R. Felst , J. Ferencei , M. Fleischer , P. Fleischmann , Y.H. Fleming , G. Flucke , G. Flugge , A. Fomenko , I. Foresti , J. Formanek , G. Franke , G. Frising , E. Gabathuler , K. Gabathuler , J. Garvey , J. Gassner , J. Gayler , R. Gerhards , C. Gerlich , S. Ghazaryan , L. Goerlich , N. Gogitidze , S. Gorbounov , C. Grab , V. Grabski , H. Grassler , T. Greenshaw , M. Gregori , G. Grindhammer , D. Haidt , L. Hajduk , J. Haller , G. Heinzelmann , R.C.W. Henderson , H. Henschel , O. Henshaw , R. Heremans , G. Herrera , I. Herynek , M. Hildebrandt , K.H. Hiller , J. Hladky , P. Hoting , D. Hoffmann (4) , R. Horisberger , A. Hovhannisyan , M. Ibbotson , M. Jacquet (2) , L. Janauschek , X. Janssen , V. Jemanov , L. Jonsson , C. A. Johnson , D.P. Johnson , H. Jung , D. Kant , M. Kapichine , M. Karlsson , J. Katzy , F. Keil , N. Keller , J. Kennedy , I.R. Kenyon , C. Kiesling , M. Klein , C. Kleinwort , T. Kluge , G. Knies , B. Koblitz , S.D. Kolya , V. Korbel , P. Kostka , R. Koutouev , A. Kropivnitskaya , J. Kroseberg , J. Kueckens , T. Kuhr , M.P.J. Landon , W. Lange , T. Lastovicka , P. Laycock , A. A. Lebedev , B. Leiner , R. Lemrani , V. Lendermann , S. Levonian , B. List , E. Lobodzinska , N. Loktionova , R. Lopez-Fernandez , V. Lubimov , H. Lueders , S. Luders , D. Luke , L. Lytkin , A. Makankine , N. Malden , E. Malinovski , S. Mangano , 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 , S. Michine , S. Mikocki , D. Milstead , F. Moreau (3) , A. Morozov , J.V. Morris , K. Muller , P. Murn , V. Nagovizin , B. Naroska , J. Naumann , T. Naumann , P.R. Newman , F. Niebergall , C. Niebuhr , D. Nikitin , G. Nowak , M. Nozicka , B. Olivier , J.E. Olsson , D. Ozerov , C. Pascaud (2) , G.D. Patel , M. Peez (4) , Emile Perez , A. Petrukhin , D. Pitzl , R. Poschl , B. Povh , N. Raicevic , J. Rauschenberger , P. Reimer , B. Reisert , C. Risler , E. Rizvi , P. Robmann , R. Roosen , A. Rostovtsev , S. Rusakov , K. Rybicki , D.P.C. Sankey , E. Sauvan (4) , S. Schatzel , J. Scheins , F.P. Schilling , P. Schleper , D. Schmidt , S. Schmidt , S. Schmitt , M. Schneider (4) , L. Schoeffel , A. Schoning , V. Schroder , H.C. Schultz-Coulon , C. Schwanenberger , K. Sedlak , F. Sefkow , I. Sheviakov , L.N. Shtarkov , Y. Sirois (3) , T. Sloan , P. Smirnov , Y. Soloviev , D. South , V. Spaskov , A. Specka (3) , H. Spitzer , R. Stamen , B. Stella , J. Stiewe , I. Strauch , U. Straumann , G. Thompson , P.D. Thompson , F. Tomasz , D. Traynor , P. Truol , G. Tsipolitis , I. Tsurin , J. Turnau , J.E. Turney , E. Tzamariudaki , A. Uraev , Martin Urban , A. Usik , S. Valkar , A. Valkarova , C. Vallee (4) , P. van Mechelen , A. Vargas Trevino , S. Vassiliev , Y. Vazdik , C. Veelken , A. Vest , A. Vichnevski , V. Volchinski , K. Wacker , J. Wagner , B. Waugh , G. Weber , R. Weber , D. Wegener , C. Werner , N. Werner , M. Wessels , B. Wessling , M. Winde , G.G. Winter , C. Wissing , E.E. Woehrling , E. Wunsch , J. Zacek , J. Zalesak , Zhiqing Zhang (2) , A. Zhokin , F. Zomer (2) , M. Zur Nedden
A. Aktas
  • Function : Author
V. Andreev
  • Function : Author
T. Anthonis
  • Function : Author
A. Asmone
  • Function : Author
A. Babaev
  • Function : Author
S. Backovic
  • Function : Author
J. Bahr
  • Function : Author
P. Baranov
  • Function : Author
W. Bartel
  • Function : Author
S. Baumgartner
  • Function : Author
J. Becker
  • Function : Author
M. Beckingham
  • Function : Author
O. Behnke
  • Function : Author
O. Behrendt
  • Function : Author
A. Belousov
  • Function : Author
C. Berger
  • Function : Author
T. Berndt
  • Function : Author
J. Bohme
  • Function : Author
M.O. Boenig
  • Function : Author
V. Boudry
J. Bracinik
  • Function : Author
W. Braunschweig
  • Function : Author
H.B. Broker
  • Function : Author
D.P. Brown
  • Function : Author
D. Bruncko
  • Function : Author
F.W. Busser
  • Function : Author
A. Bunyatyan
  • Function : Author
G. Buschhorn
  • Function : Author
L. Bystritskaya
  • Function : Author
A.J. Campbell
  • Function : Author
S. Caron
  • Function : Author
V. Chekelian
  • Function : Author
D. Clarke
  • Function : Author
C. Collard
J.G. Contreras
  • Function : Author
Y.R. Coppens
  • Function : Author
J.A. Coughlan
  • Function : Author
B.E. Cox
  • Function : Author
G. Cozzika
  • Function : Author
J. Cvach
  • Function : Author
J.B. Dainton
  • Function : Author
W.D. Dau
  • Function : Author
K. Daum
  • Function : Author
N. Delerue
R. Demirchyan
  • Function : Author
A. de Roeck
  • Function : Author
E.A. de Wolf
  • Function : Author
J. Dingfelder
  • Function : Author
V. Dodonov
  • Function : Author
J.D. Dowell
  • Function : Author
A. Dubak
  • Function : Author
C. Duprel
  • Function : Author
G. Eckerlin
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V. Efremenko
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S. Egli
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R. Eichler
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F. Eisele
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M. Ellerbrock
  • Function : Author
E. Elsen
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M. Erdmann
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W. Erdmann
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P.J.W. Faulkner
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L. Favart
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A. Fedotov
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R. Felst
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J. Ferencei
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M. Fleischer
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P. Fleischmann
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Y.H. Fleming
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G. Flucke
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G. Flugge
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A. Fomenko
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I. Foresti
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J. Formanek
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G. Franke
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G. Frising
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E. Gabathuler
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K. Gabathuler
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J. Garvey
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J. Gassner
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J. Gayler
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R. Gerhards
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C. Gerlich
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S. Ghazaryan
  • Function : Author
L. Goerlich
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N. Gogitidze
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S. Gorbounov
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C. Grab
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V. Grabski
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H. Grassler
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T. Greenshaw
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M. Gregori
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G. Grindhammer
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D. Haidt
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L. Hajduk
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J. Haller
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G. Heinzelmann
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R.C.W. Henderson
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H. Henschel
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O. Henshaw
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R. Heremans
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G. Herrera
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I. Herynek
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M. Hildebrandt
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K.H. Hiller
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J. Hladky
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P. Hoting
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R. Horisberger
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A. Hovhannisyan
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M. Ibbotson
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L. Janauschek
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X. Janssen
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V. Jemanov
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L. Jonsson
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C. A. Johnson
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D.P. Johnson
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H. Jung
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D. Kant
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M. Kapichine
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M. Karlsson
J. Katzy
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F. Keil
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N. Keller
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J. Kennedy
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I.R. Kenyon
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C. Kiesling
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M. Klein
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C. Kleinwort
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T. Kluge
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G. Knies
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B. Koblitz
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S.D. Kolya
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V. Korbel
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P. Kostka
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R. Koutouev
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A. Kropivnitskaya
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J. Kroseberg
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J. Kueckens
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T. Kuhr
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M.P.J. Landon
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W. Lange
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T. Lastovicka
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P. Laycock
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A. A. Lebedev
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B. Leiner
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R. Lemrani
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V. Lendermann
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S. Levonian
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B. List
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E. Lobodzinska
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N. Loktionova
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R. Lopez-Fernandez
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V. Lubimov
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H. Lueders
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S. Luders
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D. Luke
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L. Lytkin
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A. Makankine
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N. Malden
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E. Malinovski
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S. Mangano
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P. Marage
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J. Marks
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R. Marshall
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H.U. Martyn
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J. Martyniak
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S.J. Maxeld
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D. Meer
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A. Mehta
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K. Meier
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A.B. Meyer
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H. Meyer
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J. Meyer
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S. Michine
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S. Mikocki
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D. Milstead
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A. Morozov
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J.V. Morris
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K. Muller
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P. Murn
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V. Nagovizin
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B. Naroska
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J. Naumann
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T. Naumann
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P.R. Newman
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F. Niebergall
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C. Niebuhr
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D. Nikitin
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G. Nowak
M. Nozicka
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B. Olivier
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J.E. Olsson
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D. Ozerov
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G.D. Patel
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Emile Perez
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A. Petrukhin
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D. Pitzl
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R. Poschl
B. Povh
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N. Raicevic
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J. Rauschenberger
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P. Reimer
B. Reisert
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C. Risler
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E. Rizvi
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P. Robmann
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R. Roosen
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A. Rostovtsev
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S. Rusakov
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K. Rybicki
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D.P.C. Sankey
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S. Schatzel
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J. Scheins
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F.P. Schilling
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P. Schleper
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D. Schmidt
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S. Schmidt
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S. Schmitt
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L. Schoeffel
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A. Schoning
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V. Schroder
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H.C. Schultz-Coulon
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C. Schwanenberger
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K. Sedlak
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F. Sefkow
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I. Sheviakov
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L.N. Shtarkov
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T. Sloan
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P. Smirnov
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Y. Soloviev
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D. South
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V. Spaskov
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H. Spitzer
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R. Stamen
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B. Stella
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J. Stiewe
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I. Strauch
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U. Straumann
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G. Thompson
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P.D. Thompson
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F. Tomasz
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D. Traynor
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P. Truol
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G. Tsipolitis
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I. Tsurin
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J. Turnau
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J.E. Turney
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E. Tzamariudaki
  • Function : Author
A. Uraev
  • Function : Author
Martin Urban
  • Function : Author
A. Usik
  • Function : Author
S. Valkar
  • Function : Author
A. Valkarova
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P. van Mechelen
  • Function : Author
A. Vargas Trevino
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S. Vassiliev
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Y. Vazdik
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C. Veelken
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A. Vest
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A. Vichnevski
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V. Volchinski
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K. Wacker
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J. Wagner
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B. Waugh
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G. Weber
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R. Weber
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D. Wegener
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C. Werner
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N. Werner
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M. Wessels
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B. Wessling
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M. Winde
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G.G. Winter
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C. Wissing
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E.E. Woehrling
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E. Wunsch
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J. Zacek
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J. Zalesak
  • Function : Author
Zhiqing Zhang
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A. Zhokin
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M. Zur Nedden
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Abstract

Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb-1. Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is found with the Standard Model predictions. However, for electron pair invariant masses above 100 GeV, three di-electron events and three tri-electron events are observed, compared to Standard Model expectations of 0.30 \pm 0.04 and 0.23 \pm 0.04, respectively.
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Dates and versions

in2p3-00014217 , version 1 (11-12-2003)

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  • HAL Id : in2p3-00014217 , version 1

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A. Aktas, V. Andreev, T. Anthonis, A. Asmone, A. Babaev, et al.. Multi-electron production at high transverse momenta in $ep$ collisions at HERA. European Physical Journal C: Particles and Fields, 2003, 31, pp.17-29. ⟨in2p3-00014217⟩
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