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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 pp̄ 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 M e* and the compositeness energy scale Λ. In the contact interaction model, we exclude 132 GeV/c 2 < M e* < 879 GeV/c 2 for Λ = M e* at 95% confidence level (C.L.). In the gauge-mediated model, we exclude 126 GeV/c 2 < M e* < 430 GeV/c 2 at 95% C.L. for the phenomenological coupling f/Λ ≈ 10 -2GeV -1. © 2005 The American Physical Society.0F.I. 7,2180American Physical Society628 auteursinfo:eu-repo/semantics/publishe

physical review letters

Search for Excited and Exotic Electrons in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>e</mml:mi><mml:mi>γ</mml:mi></mml:math>Decay Channel in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</…

Search for Excited and Exotic Electrons in theeγDecay Channel inpp¯Collisions ats=