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Search for excited and exotic electrons in the e gamma decay channel in p(p)over-bar collisions at root s=1.96 TeV

Acosta, D; Adelman, J; Affolder, T; Akimoto, T; Albrow, MG; Ambrose, D; Amerio, S; ... Zucchelli, S; + view all (2005) Search for excited and exotic electrons in the e gamma decay channel in p(p)over-bar collisions at root s=1.96 TeV. PHYS REV LETT , 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 p (p) over bar collisions at root 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 Lambda. In the contact interaction model, we exclude 132 GeV/c(2)< M-e*< 879 GeV/c(2) for Lambda=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/Lambda approximate to 10(-2) GeV-1.

Type: Article
Title: Search for excited and exotic electrons in the e gamma decay channel in p(p)over-bar collisions at root s=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
Keywords: CDF PLUG UPGRADE, HADRON COLLIDERS, LEPTONS, CALORIMETER, GENERATION, DETECTOR, FERMIONS, HERA, LEP
UCL classification: UCL
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/136810
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