We report the results of a search for the anomalous production of a massive particle decaying to four electrons via two Z(0) bosons in 1.1 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected by the CDF II detector at Fermilab. We employ optimized electron identification criteria to maximize acceptance and efficiency. We estimate the backgrounds in the invariant mass range 500-1000 GeV/c(2) to be 0.028 +/- 0.009(stat) +/- 0.011(syst) events. We observe zero events in this search region. Assuming a Randall-Sundrum graviton production model, we set 95% C.L. limits on sigma x BF(G -> Z(0)Z(0)) < 4-6 pb, depending on the graviton mass.
Search for new heavy particles decaying to Z(0)Z(0)-> eeee in p(p)over-bar collisions at root s=1.96 TeV RID G-1087-2011 RID E-4473-2011
DELL'ORSO, MAURO;DONATI, SIMONE;PUNZI, GIOVANNI;
2008-01-01
Abstract
We report the results of a search for the anomalous production of a massive particle decaying to four electrons via two Z(0) bosons in 1.1 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected by the CDF II detector at Fermilab. We employ optimized electron identification criteria to maximize acceptance and efficiency. We estimate the backgrounds in the invariant mass range 500-1000 GeV/c(2) to be 0.028 +/- 0.009(stat) +/- 0.011(syst) events. We observe zero events in this search region. Assuming a Randall-Sundrum graviton production model, we set 95% C.L. limits on sigma x BF(G -> Z(0)Z(0)) < 4-6 pb, depending on the graviton mass.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
