Search for New Heavy Particles Decaying to Z0 Z0 ---> eeee in p - anti-p Collisions at s**(1/2) = 1.96-TeV

Journal Article · Tue Jan 01 00:00:00 EST 2008

OSTI ID:923529

Aaltonen, T; Adelman, J; Akimoto, T; Albrow, M G; Alvarez Gonzalez, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Aoki, M

We report the results of a search for the anomalous production of a massive particle decaying to four electrons via two Z{sup 0} bosons in 1.1 fb{sup -1} of p{bar p} collisions at {radical}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{sup 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% CL limits on {sigma} x BF(G {yields} Z{sup 0}Z{sup 0}) < 4-6 pb, depending on the graviton mass.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 923529
• Report Number(s): FERMILAB-PUB-08-008-E; arXiv eprint number arXiv:0801.1129; TRN: US0801863
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
EFFICIENCY
ELECTRONS
FERMILAB
FERMILAB COLLIDER DETECTOR
GRAVITONS
PRODUCTION
Experiment-HEP