We report on a search for anomalous production of Z boson pairs through a massive resonance decay in data corresponding to 2.5-2.9 fb(-1) of integrated luminosity in p (p) over bar collisions at root s = 1.96 TeV using the CDF II detector at the Fermilab Tevatron. This analysis, with more data and channels where the Z bosons decay to muons or jets, supersedes the 1.1 fb(-1) four-electron channel result previously published by CDF. In order to maintain high efficiency for muons, we use a new forward tracking algorithm and muon identification requirements optimized for these high signal-to-background channels. Predicting the dominant backgrounds in each channel entirely from sideband data samples, we observe four-body invariant mass spectra above 300 GeV/c(2) that are consistent with background. We set limits using the acceptance for a massive graviton resonance that are 7-20 times stronger than the previously published direct limits on resonant ZZ diboson production.

T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Search for new heavy particles decaying to ZZ -> llll, lljj in p(p)over bar collisions at root s = 1.96 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(11), 112008-1-112008-18 [10.1103/PhysRevD.83.112008].

Search for new heavy particles decaying to ZZ -> llll, lljj in p(p)over bar collisions at root s = 1.96 TeV

BARRIA, PATRIZIA;GAROSI, PAOLA;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;
2011-01-01

Abstract

We report on a search for anomalous production of Z boson pairs through a massive resonance decay in data corresponding to 2.5-2.9 fb(-1) of integrated luminosity in p (p) over bar collisions at root s = 1.96 TeV using the CDF II detector at the Fermilab Tevatron. This analysis, with more data and channels where the Z bosons decay to muons or jets, supersedes the 1.1 fb(-1) four-electron channel result previously published by CDF. In order to maintain high efficiency for muons, we use a new forward tracking algorithm and muon identification requirements optimized for these high signal-to-background channels. Predicting the dominant backgrounds in each channel entirely from sideband data samples, we observe four-body invariant mass spectra above 300 GeV/c(2) that are consistent with background. We set limits using the acceptance for a massive graviton resonance that are 7-20 times stronger than the previously published direct limits on resonant ZZ diboson production.
2011
T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Search for new heavy particles decaying to ZZ -> llll, lljj in p(p)over bar collisions at root s = 1.96 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(11), 112008-1-112008-18 [10.1103/PhysRevD.83.112008].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/41751
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