14 datasets found

Discovered in 1995 at Fermilab, top quark is the last quark discovered. The measurement of its properties allows to test Standard Model predictions and to constraint...

This thesis deals with the search for electroweak production of the top quark (single top in $s$ and $t$ <br />channels) in ppbar collisions at the Tevatron in...

ATLAS, LHC, b-quark, top-quark, b-tagging, b-tagging calibration, top quark pairs, cross section, differential cross section, top mass, top rapidity, new physics.

National audience

National audience

The hypothesis of a fourth generation of fermions - the matter particles described in the Standard Model (SM) of particle physics - is one of the simplest model of new...

(...) The studies presented in this thesis were performed using data collected by the ATLAS detector at the LHC. The LHC is the largest and highest energy particle...

The purpose of high energy physics is to improve our knowledge about the fundamental structure of matter, in particular about particles that constitute the world. One...

In this report, we summarise our research program within the ATLAS collaboration between 2005-2012. We summarise our contribution to the integration of two of the...

In this thesis we present the first measurement in the CMS experiment of the top-antitop production cross section in the tau+jets final state. To perform this...

The top quark polarization in electroweak production for single top t-channel allows to test the structure of the Wtb vertex: the left-handed vector coupling of the...

The top quark was discovered in 1995 by the D0 and CDF experiments at the TeVatron. Due to its great mass, close to 172.5 GeV, the top quark is difficult to produce...

This thesis presents the search for New Physics in events with four top quarks using the data collected in proton-proton collisions by the ATLAS experiment at the LHC....

N° DU : 2375, N°EDSF : 758