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/c(2)) 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/(M) over bar (P1) = 0.1 is 1058 GeV/c(2), making it the strongest limit to date. RI Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012
Titolo: | Search for New Dielectron Resonances and Randall-Sundrum Gravitons at the Collider Detector at Fermilab | |
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Data di pubblicazione: | 2011 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.107.051801 | |
Handle: | http://hdl.handle.net/11384/5507 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |