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Cecilia E. Gerber

Publications and source records attributed to Cecilia E. Gerber.

6 recordsLinked to original sources
arXiv2019

LHC Highlights and Prospects

These lectures were presented at the 2019 CERN Latin-American School of High Energy Physics. They were centered on the experimental methods used in hadron colliders to advance our understanding in the field of high energy particle physics. From accelerators, to particle detector technologies, object identification and data analyses techniques, the lectures did not attempt to provide a comprehensive, in-depth technical background, but rather focused on an overview of experimental techniques that enabled our advances in supporting and challenging the predictions of the standard model. This document includes a selection of the material presented in the lectures, focusing on how advances in detector technologies and object identification enabled the development of increasingly sophisticated data analysis techniques. This writeup also includes an outlook to the future LHC program and beyond.

hep-ex↗
arXiv2014

Review of Physics Results from the Tevatron: Top Quark Physics

We present results on top quark physics from the CDF and D0 collaborations at the Fermilab Tevatron proton anti-proton collider. These include legacy results from Run II that were published or submitted for publication before mid-2014, as well as a summary of Run I results. The historical perspective of the discovery of the top quark in Run I is also described.

hep-ex↗
arXiv2009

Observation of Single Top Quark Production

I report on the observation of electroweak production of single top quarks in proton anti-proton collisions at a center of mass energy of 1.96 TeV using 2.3 inverse-fb of data collected with the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon, missing transverse energy, two, three or four jets, with one or two of them identified as originating from the fragmentation of a b quark, the measured cross section for the process (pp-bar to tb+X,tqb+X) is 3.94 +- 0.88 pb (for a top quark mass of 170 GeV). The probability to measure a cross section at this value or higher in the absence of signal is 2.5E-7, corresponding to a 5.0 standard deviation significance. Using the same dataset, the measured cross sections for the t- and the s-channel processes when determined simultaneously with no assumption on their relative production rate are 3.14+0.94-0.80 pb and 1.05+-0.81pb respectively, consistent with standard model expectations. The measured t-channel cross section has a significance of 4.8 standard deviations, representing the first evidence for the production of an individual single top process to be detected.

hep-ex↗
arXiv2009

Top Quark Physics at the Tevatron

I present recent results on top quark production and properties in proton anti-proton collisions at a center of mass energy of 1.96 TeV. The measurements were performed by the CDF and D0 collaborations using approximately 3 fb-1 of data taken during Run II at the Tevatron.

hep-ex↗
arXiv1998

Review of W and Z Production at the Tevatron

The CDF and \D0 collaborations have used recent data taken at the Tevatron to perform QCD tests with $W$ and $Z$ bosons decaying leptonically. \D0 measures the production cross section times branching ratio for $W$ and $Z$ bosons. This also gives an indirect measurement of the total width of the $W$ boson: $\gw=2.126\pm0.092 GeV$. CDF reports on a direct measurement of $\gw=2.19\pm0.19 GeV$, in good agreement with the indirect determination and Standard Model predictions. \D0's measurement of the differential $dσ/dp_T$ distribution for $W$ and $Z$ bosons decaying to electrons agrees with the combined QCD perturbative and resummation calculations. In addition, the $dσ/dp_T$ distribution for the $Z$ boson discriminates between different vector boson production models. Studies of $W+ Jet$ production at CDF find the NLO QCD prediction for the production rate of $W+\ge1 Jet$ events to be in good agreement with the data.

hep-ex↗