Leif Jönsson
Professor emeritus
Search for excited electrons in ep collisions at HERA
Author
- F. D. Aaron
- C. Alexa
- V. Andreev
- B. Antunovic
- S. Aplin
- A. Asmone
- A. Astvatsatourov
- A. Bacchetta
- S. Backovic
- A. Baghdasaryan
- P. Baranov
- E. Barrelet
- W. Bartel
- M. Beckingham
- K. Begzsuren
- O. Behnke
- A. Belousov
- N. Berger
- J. C. Bizot
- M. -O. Boenig
- 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. Deak
- 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
- L. Finke
- 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
- Magnus Hansson
- C. Helebrant
- R. C. W. Henderson
- H. Henschel
- G. Herrera
- M. Hildebrandt
- K. H. Hiller
- D. Hoffmann
- R. Horisberger
- A. Hovhannisyan
- T. Hreus
- M. Jacquet
- M. E. Janssen
- X. Janssen
- V. Jemanov
- Leif Jönsson
- D. P. Johnson
- A. W. Jung
- H. Jung
- M. Kapichine
- J. Katzy
- I. R. Kenyon
- C. Kiesling
- M. Klein
- C. Kleinwort
- T. Klimkovich
- T. Kluge
- K. Knutsson
- R. Kogler
- V. Korbel
- P. Kostka
- M. Kraemer
- K. Krastev
- J. Kretzschmar
- A. Kropivnitskaya
- K. Krueger
- K. Kutak
- M. P. J. Landon
- W. Langen
- G. Lastovicka-Medin
- P. Laycock
- A. Lebedev
- G. Leibenguth
- V. Lendermann
- S. Levonian
- G. Li
- K. Lipka
- A. Liptaj
- B. List
- J. List
- N. Loktionova
- R. Lopez-Fernandez
- V. Lubimov
- A. -I. Lucaci-Timoce
- 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
- H. Meyer
- J. Meyer
- V. Michels
- S. Mikocki
- I. Milcewicz-Mika
- F. Moreau
- A. Morozov
- J. V. Morris
- M. U. Mozer
- M. Mudrinic
- K. Mueller
- P. Murin
- K. Nankov
- B. Naroska
- Th. Naumann
- P. R. Newman
- C. Niebuhr
- A. Nikiforov
- G. Nowak
- K. Nowak
- M. Nozicka
- B. Olivier
- J. E. Olsson
- Sakar Osman
- D. Ozerov
- V. Palichik
- I. Panagoulias
- M. Pandurovic
- Th. Papadopoulou
- C. Pascaud
- G. D. Patel
- O. Pejchal
- H. Peng
- E. Perez
- A. Petrukhin
- I. Picuric
- S. Piec
- D. Pitzl
- R. Placakyte
- 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. Salek
- F. Salvaire
- D. P. C. Sankey
- M. Sauter
- E. Sauvan
- S. Schmidt
- S. Schmitt
- C. Schmitz
- L. Schoeffel
- A. Schoening
- H. -C. Schultz-Coulon
- F. Sefkow
- R. N. Shaw-West
- I. Sheviakov
- L. N. Shtarkov
- S. Shushkevich
- T. Sloan
- I. Smijanic
- P. Smirnov
- Y. Soloviev
- P. Sopicki
- D. South
- V. Spaskov
- A. Specka
- Z. Staykova
- M. Steder
- B. Stella
- U. Straumann
- D. Sunar
- T. Sykora
- V. Tchoulakov
- G. Thompson
- P. D. Thompson
- T. Toll
- F. Tomasz
- T. H. Tran
- D. Traynor
- T. N. Trinh
- P. Truoel
- I. Tsakov
- B. Tseepeldorj
- I. Tsurin
- J. Turnau
- E. Tzamariudaki
- K. Urban
- A. Valkarova
- C. Vallee
- P. Van Mechelen
- A. Vargas Trevino
- Y. Vazdik
- S. Vinokurova
- V. Volchinski
- D. Wegener
- M. Wessels
- Ch. Wissing
- E. Wuensch
- V. Yeganov
- J. Zacek
- J. Zalesak
- Z. Zhang
- A. Zhelezov
- A. Zhokin
- Y. C. Zhu
- T. Zimmermann
- H. Zohrabyan
- F. Zomer
Summary, in English
A search for excited electrons is performed using the full e(+/-) p data sample collected by the HI experiment at HERA, corresponding to a total luminosity of 475 pb(-1). The electroweak decays of excited electrons e* -> e gamma, e* -> eZ and e* -> vW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited electron searches. The e* production via contact interactions is also addressed for the first time in ep collisions. (C) 2008 Elsevier B.V. All rights reserved.
Department/s
- Particle and nuclear physics
Publishing year
2008
Language
English
Pages
131-139
Publication/Series
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
666
Issue
2
Document type
Journal article
Publisher
Elsevier
Topic
- Subatomic Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 0370-2693