Search for long-lived particles decaying into electron or photon pairs with the D0 detector

Collaboration, D0 and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Williams, Mark and Ratoff, Peter and Love, Peter and Rakitin, Alexander and Sopczak, Andre (2008) Search for long-lived particles decaying into electron or photon pairs with the D0 detector. Physical review letters, 101 (11): 111802. ISSN 1079-7114

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Abstract

In this Letter we report on a search for long-lived particles that decay into final states with two electrons or photons. Such long-lived particles arise in a variety of theoretical models, like hidden valleys and supersymmetry with gauge-mediated breaking. By precisely reconstructing the direction of the electromagnetic shower we are able to probe much longer lifetimes than previously explored. We see no evidence of the existence of such long-lived particles and interpret this search as a quasi model-independent limit on their production cross section, as well as a limit on a long-lived fourth generation quark.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2008 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
?? physics and astronomy(all) ??
ID Code:
64162
Deposited By:
Deposited On:
29 Apr 2013 15:50
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Jan 2024 02:01