Choose timezone
Your profile timezone:
Collider Cross Talk
Top quark mass measurements in ATLAS and CMS
by ,
→
Europe/Zurich
4/2-011 - TH common room (CERN)
Description
Abstract:
After almost 30 years from the discovery of the top quark, its mass is known to a remarkable precision of a few permille. However, the uncertainty in the top quark mass represents one of the largest parametric uncertainties in global electroweak fits, which are a powerful tool for testing the self consistency of the Standard Model. The value of the top quark mass also affects the evolution of the Higgs self coupling, which has implications on the stability of the electroweak vacuum at the Plank scale. Top quarks are produced much more abundantly at the LHC compared to the Tevatron, and can be effectively identified and reconstructed at the ATLAS and CMS experiments. However, significant challenges remain in the interpretation of top quark mass measurements.
In this talk, we will review the recent progress in top quark mass measurements at the ATLAS and CMS experiments at the LHC. Advantages, disadvantages, and prospects for the different approaches will be discussed, both from the experimental and the theoretical points of view. We will also briefly review the prospects for top quark mass measurements at future lepton colliders.
Speakers:
Matteo Defranchis (CMS) obtained his PhD at DESY and the University of Hamburg, and is currently a Research Fellow at CERN. His primary research interest is the QCD interpretation of top quark cross section measurements, especially in terms of the top quark mass. He covered the position of Top Quark Mass and Properties convener in CMS, and he is currently convener of the tt+X cross section group.
Javier Jiménez Peña (ATLAS) obtained his PhD at IFIC (University of Valencia/CSIC) and is currently a postdoctoral researcher at the Max Planck Institute for Physics in Munich. His primary research interest are precision measurements of properties of the top quark like its mass and polarization. He is also heavily involved in the alignment of the ATLAS Inner Detector, were he held the position of group convener. Currently, he is convener of the top quark mass and properties group.
