Search for excited electrons in p(p)over-bar collisions at root s=1.96 TeV
2008 (English)In: PHYSICAL REVIEW D, ISSN 1550-7998, Vol. 77, no 9, 091102-1-091102-8 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2008. Vol. 77, no 9, 091102-1-091102-8 p.
CROSS-SECTION, QUARK, LEPTONS, LEP, COMPOSITENESS, FERMIONS, LIMITS, MODEL, HERA
IdentifiersURN: urn:nbn:se:kth:diva-33142DOI: 10.1103/PhysRevD.77.091102ISI: 000256297000002ScopusID: 2-s2.0-43449092880OAI: oai:DiVA.org:kth-33142DiVA: diva2:413605
QC 201104292011-04-292011-04-282011-04-29Bibliographically approved