Scientific article
Open access

Search for new particles leading to Z + jets final states in pp collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Publication date2007

We present the results of a search for new particles that lead to a Z boson plus jets in pp collisions at s√=1.96  TeV using the Collider Detector at Fermilab (CDF II). A data sample with a luminosity of 1.06  fb−1 collected using Z boson decays to ee and μμ is used. We describe a completely data-based method to predict the dominant background from standard model Z+jet events. This method can be similarly applied to other analyses requiring background predictions in multijet environments, as shown when validating the method by predicting the background from W+jets in tt production. No significant excess above the background prediction is observed, and a limit is set using a fourth generation quark model to quantify the acceptance. Assuming BR(b′→bZ)=100% and using a leading-order calculation of the b′ cross section, b′ quark masses below 268  GeV/c2 are excluded at 95% confidence level.

Citation (ISO format)
CDF Collaboration. Search for new particles leading to Z + jets final states in <em>pp</em> collisions at s√=1.96  TeV. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2007, vol. 76, n° 07, p. 072006. doi: 10.1103/PhysRevD.76.072006
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Article (Published version)
ISSN of the journal1550-2368

Technical informations

Creation07/03/2014 11:11:00 AM
First validation07/03/2014 11:11:00 AM
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