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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/24481
Title: 
Search for excited electrons in p(p)over-bar collisions at root s=1.96 TeV
Author(s): 
Institution: 
  • Joint Nucl Res Inst
  • Univ Buenos Aires
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Univ Estado Rio de Janeiro
  • Universidade Federal do ABC (UFABC)
  • Universidade Estadual Paulista (UNESP)
  • Univ Alberta
  • Simon Fraser Univ
  • York Univ
  • McGill Univ
  • Univ Sci & Technol China
  • Universidad de los Andes
  • Charles Univ Prague
  • Czech Tech Univ Prague
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  • Univ Aix Marseille 2
  • Univ Paris 11
  • Univ Paris 04
  • Univ Paris 07
  • CEA
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  • Univ Freiburg
  • Johannes Gutenberg Univ Mainz
  • Univ Munich
  • Univ Wuppertal
  • Panjab Univ
  • University of Delhi
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  • Univ Coll Dublin
  • Korea University
  • Sungkyunkwan Univ
  • CINVESTAV
  • NIKHEF H
  • Univ Amsterdam
  • Radboud Univ Nijmegen
  • Institute for Theoretical and Experimental Physics (ITEP)
  • Moscow MV Lomonosov State Univ
  • Inst High Energy Phys
  • Petersburg Nucl Phys Inst
  • Lund Univ
  • Royal Inst Technol
  • Stockholm Univ
  • Uppsala Univ
  • Univ Zurich
  • University of Lancaster
  • Univ London Imperial Coll Sci Technol & Med
  • University of Manchester
  • University of Arizona
  • Lawrence Berkeley Natl Lab
  • Univ Calif Berkeley
  • Calif State Univ Fresno
  • University of California, Riverside (UCR)
  • Florida State University
  • Fermilab Natl Accelerator Lab
  • Univ Illinois
  • No Illinois Univ
  • Northwestern University (NU)
  • Indiana University
  • Univ Notre Dame
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  • Iowa State Univ
  • University of Kansas (KU)
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  • Louisiana Tech University
  • University of Maryland
  • Boston University
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  • University of Virginia (UVA)
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ISSN: 
1550-7998
Abstract: 
We present the results of a search for the production of an excited state of the electron, e(*), in proton-antiproton collisions at root s = 1.96 TeV. The data were collected with the D0 experiment at the Fermilab Tevatron Collider and correspond to an integrated luminosity of approximately 1 fb(-1). We search for e(*) in the process p (p) over bar -> e(*)e, with the e(*) subsequently decaying to an electron plus photon. No excess above the standard model background is observed. Interpreting our data in the context of a model that describes e(*) production by four-fermion contact interactions and e(*) decay via electroweak processes, we set 95% C.L. upper limits on the production cross section ranging from 8.9 to 27 fb, depending on the mass of the excited electron. Choosing the scale for contact interactions to be Lambda = 1 TeV, excited electron masses below 756 GeV are excluded at the 95% C.L.
Issue Date: 
1-May-2008
Citation: 
Physical Review D. College Pk: Amer Physical Soc, v. 77, n. 9, p. 8, 2008.
Time Duration: 
8
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.77.091102
URI: 
http://hdl.handle.net/11449/24481
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/24481
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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