Search for $ZZ$ and $Z\gamma^*$ production in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV and limits on anomalous $ZZZ$ and $ZZ\gamma^*$ couplings
(2008) Physical Review Letters — Vol. 100 (2008)
Files
0712.pdf
Open Access - Adobe PDF
- 1.12 MB
Details
- Authors
- et. al.
- Abstract
- We present a study of four muon, four electron, and two muon two electron events using 1 fb^(-1) of data collected with the D0 detector at the Fermilab Tevatron p-barp Collider at sqrt(s) = 1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, we observe one event, consistent with the expected background of 0.13 +- 0.03 events and with the predicted standard model ZZ and Z\gamma^* production of 1.71 +-0.15 events. We set an upper limit on the ZZ and Z\gamma^* cross section of 4.4 pb at the 95% C.L. We also derive limits on anomalous neutral trilinear ZZZ and ZZ\gamma^* gauge couplings. The one-parameter 95%$ C.L. coupling limits with a form factor scale Lambda = 1.2 TeV are -0.28 < f_(40)^Z < 0.28, -0.31 < f_(50)^Z < 0.29, -0.26 < f_(40)^\gamma < 0.26, and -0.30 < f_(5 0)^\gamma < 0.28.
- Affiliations
Citations
Tanasijczuk, A. J., D0, & et al. (2008). Search for $ZZ$ and $Z\gamma^*$ production in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV and limits on anomalous $ZZZ$ and $ZZ\gamma^*$ couplings. Physical Review Letters, 100. https://doi.org/10.1103/PhysRevLett.100.131801 (Original work published 2008)