Download or read book Search for Production of an $\Upsilon$(1S) Meson in Association with a W Or Z Boson Using the Full 1.96 TeV $p\bar{p}$ Collision Data Set at CDF. written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Production of the [Upsilon](1S) meson in association with a vector boson is a rare process in the standard model with a cross section predicted to be below the sensitivity of the Tevatron. Observation of this process could signify contributions not described by the standard model or reveal limitations with the current nonrelativistic quantum-chromodynamic models used to calculate the cross section. We perform a search for this process using the full Run II data set collected by the CDF II detector corresponding to an integrated luminosity of 9.4 fb-1. Our search considers the [Upsilon]→[mu][mu] decay and the decay of the W and Z bosons into muons and electrons. Furthermore, in these purely leptonic decay channels, we observe one [Upsilon]W candidate with an expected background of 1.2±0.5 events, and one [Upsilon]Zcandidate with an expected background of 0.1±0.1 events. Both observations are consistent with the predicted background contributions. The resulting upper limits on the cross section for [Upsilon]+W/Zproduction are the most sensitive reported from a single experiment and place restrictions on potential contributions from non-standard-model physics.