Search for new dielectron resonances and Randall-Sundrum gravitons at the collider detector at Fermilab

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URI: http://hdl.handle.net/10902/2146
ISSN: 0031-9007
ISSN: 1079-7114
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Autoría
Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, Iván Autoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
Fecha
2011-07-27
Derechos
© 2011 American Physical Society
Publicado en
Physical Review Letters, 107(5), 051801
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American Physical Society
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Resumen/Abstract
A search for new dielectron-mass resonances using data recorded by the CDF II detector and corresponding to an integrated luminosity of 5.7  fb-1 is presented. No significant excess over the expected standard model prediction is observed. In this data set, an event with the highest dielectron mass ever observed (960  GeV/c2) was recorded. The results are interpreted in the Randall-Sundrum (RS) model. Combined with the 5.4  fb-1 diphoton analysis, the RS-graviton lower-mass limit for the coupling k/M̅ Pl=0.1 is 1058  GeV/c2, making it the strongest limit to date.
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