Search for long-lived particles decaying into electron or photon pairs with the D0 detector
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
12/09/2008
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Resumo |
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, such as 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. © 2008 The American Physical Society. |
Identificador |
http://dx.doi.org/10.1103/PhysRevLett.101.111802 Physical Review Letters, v. 101, n. 11, 2008. 0031-9007 1079-7114 http://hdl.handle.net/11449/70573 10.1103/PhysRevLett.101.111802 2-s2.0-52249114527 2-s2.0-52249114527.pdf |
Idioma(s) |
eng |
Relação |
Physical Review Letters |
Direitos |
closedAccess |
Palavras-Chave | #Electromagnetism #Electro-magnetic showers #Final states #Fourth generation #Photon pairs #Production cross sections #Supersymmetry #Photons |
Tipo |
info:eu-repo/semantics/article |