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Search for Excited and Exotic Electrons in the e y Decay Channel in pp Collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 94, no. 10, 101802
Publication date2005
Abstract

We present a search for excited and exotic electrons (e∗) decaying to an electron and a photon, both with high transverse momentum. We use 202  pb−1 of data collected in pp collisions at s√=1.96  TeV with the Collider Detector at Fermilab II detector. No signal above standard model expectation is seen for associated ee∗ production. We discuss the e∗ sensitivity in the parameter space of the excited electron mass Me∗ and the compositeness energy scale Λ. In the contact interaction model, we exclude 132  GeV/c2<879  GeV/c2 for Λ=Me∗ at 95% confidence level (C.L.). In the gauge-mediated model, we exclude 126  GeV/c2<430  GeV/c2 at 95% C.L. for the phenomenological coupling f/Λ≈10−2  GeV−1.

Citation (ISO format)
CDF Collaboration. Search for Excited and Exotic Electrons in the <em>e y</em> Decay Channel in <em>pp</em> Collisions at s√=1.96  TeV. In: Physical review letters, 2005, vol. 94, n° 10, p. 101802. doi: 10.1103/PhysRevLett.94.101802
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ISSN of the journal0031-9007
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