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. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012

Search for new heavy particles decaying to Z(0)Z(0)-> eeee in p(p)over-bar collisions at root s=1.96 TeV

MORELLO, MICHAEL JOSEPH;
2008

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. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/6714
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 2
social impact