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Title

Search for New Physics in High-Mass Electron-Positron Events in pp̅ Collisions at √s=1.96  TeV

AuthorsAaltonen, T.; Ruiz Jimeno, Alberto ; Chuang, S. H. ; Cuenca Almenar, Cristóbal ; Gómez, G. ; Palencia, Enrique ; Cuevas, Javier ; Rodrigo, Teresa ; Piedra, Jonatan ; Cabrera, Susana ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío ; Casal, Bruno
Issue Date22-Oct-2007
PublisherAmerican Physical Society
CitationPhysical Review Letters 99(17): 171802 (2007)
AbstractWe report the results of a search for a narrow resonance in electron-positron events in the invariant mass range of 150-950 GeV/c^(2) using 1.3 fb(-1) of p(p)over-bar collision data at sqrt{s} = 1.96 TeV collected by the CDF II detector at Fermilab. No significant evidence of such a resonance is observed and we interpret the results to exclude the standard-model-like Z' with a mass below 923 GeV/c^(2) and the Randall-Sundrum graviton with a mass below 807 GeV/c^(2) for k sqrt{M-p1} = 0.1, both at the 95% confidence level. Combining with diphoton data excludes the Randall-Sundrum graviton for masses below 889 GeV/c^(2) for k sqrt{M-p1} = 0.1.
Description7 páginas, 4 figuras.-- PACS nrs.: 13.85.Rm, 04.50.+h, 13.85.Qk, 14.70.Pw.-- CDF Collaboration: et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.99.171802
URIhttp://hdl.handle.net/10261/8527
DOI10.1103/PhysRevLett.99.171802
ISSN0031-9007
Appears in Collections:(IFIC) Artículos
(IFCA) Artículos
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