Search for excited electrons in pp-bar collisions at s√=1.96 TeV
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Issue Date
2008-05-12Author
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
We present the results of a search for the production of an excited state of the electron, e*, in proton-antiproton collisions at 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 pp-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 Λ=1 TeV, excited electron masses below 756 GeV are excluded at the 95% C.L.
Description
This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.77.091102.
ISSN
1550-7998Collections
Citation
V. M. Abazov et al. (D0 Collaboration). (2008). "Search for excited electrons in pp-bar collisions at s√=1.96 TeV." Physical Review D, 77(9):091102. http://dx.doi.org/10.1103/PhysRevD.77.091102
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