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Search for Excited and Exotic Electrons in the e gamma Decay Channel in p anti-p Collisions at s**(1/2) = 1.96 TeV

Lancaster, M; Waters, DCDFC; (2005) Search for Excited and Exotic Electrons in the e gamma Decay Channel in p anti-p Collisions at s**(1/2) = 1.96 TeV. Physical Review Letters , 94 (10) , Article 101802. 10.1103/PhysRevLett.94.101802. Green open access

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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 pp̅ 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<Me*<879  GeV/c2 for Λ=Me* at 95% confidence level (C.L.). In the gauge-mediated model, we exclude 126  GeV/c2<Me*<430  GeV/c2 at 95% C.L. for the phenomenological coupling f/Λ≈10-2  GeV-1.

Type: Article
Title: Search for Excited and Exotic Electrons in the e gamma Decay Channel in p anti-p Collisions at s**(1/2) = 1.96 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.94.101802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.94.101802
Language: English
Additional information: © 2005 The American Physical Society
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131998
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