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1.	Abazov, V. M., et al. (author) Search for excited electrons in p(p)over-bar collisions at root s=1.96 TeV 2008 In: Physical Review D. - 1550-7998 .- 1550-2368. ; D:77, s. 091102- Journal article (peer-reviewed)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.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Abbott, B. (1); Strandberg, Jonas (1); Ancu, L. S. (1); Andeen, T. (1); Begel, M. (1); Belanger-Champagne, ... (1); show more...; Borissov, G. (1); Brandt, A. (1); Brock, R. (1); Brooijmans, G. (1); Burdin, S. (1); Burke, S. (1); Butler, J. M. (1); Calfayan, P. (1); Calvet, S. (1); Chakraborty, D. (1); Cheu, E. (1); Coadou, Y. (1); Cooke, M. (1); Crepe-Renaudin, S. (1); De, K. (1); Deliot, F. (1); Denisov, S. P. (1); Duflot, L. (1); Enari, Y. (1); Evans, H. (1); Fiedler, F. (1); Filthaut, F. (1); Fox, H. (1); Garcia, C. (1); Gillberg, D. (1); Greenwood, Z. D. (1); Grohsjean, A. (1); Guo, J. (1); Gutierrez, P. (1); Haas, A. (1); Haefner, P. (1); Han, L. (1); Hauser, R. (1); Hensel, C. (1); Hohlfeld, M. (1); Hubacek, Z. (1); Jakobs, K. (1); Kaushik, V. (1); Kehoe, R. (1); Khanov, A. (1); Kuhl, T. (1); Kupco, A. (1); Kvita, J. (1); Lammers, S. (1); show less...

University: Royal Institute of Technology (1); Uppsala University (1); Stockholm University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2008 (1)

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