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- Title:
- Search for excited electrons in p(p)over-bar collisions at root s=1.96 TeV
- Abazov, V. M.
- Abbott, B.
- Abolins, M.
- Acharya, B. S.
- Adams, M.
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- Pogorelov, Y.
- Joint Nucl Res Inst
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- 1550-7998
- 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.
- 1-May-2008
- Physical Review D. College Pk: Amer Physical Soc, v. 77, n. 9, p. 8, 2008.
- 8
- Amer Physical Soc
- http://dx.doi.org/10.1103/PhysRevD.77.091102
- http://hdl.handle.net/11449/24481
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/24481
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