Adrian Signer
(PSI, Villigen)
06/05/2015, 10:00
An introductory discussion of the main basic issues regarding determinations of the top quark mass is given. After a reminder of how to extract a fundamental parameter in a quantum field theory from observables, I will concentrate on two issues. First, which observables are particulary well suited for a determination of the top mass. Second, are some mass definitions better than others?
Spyridon Argyropoulos
(DESY, Hamburg)
07/05/2015, 10:00
Color reconnection constitutes one of the main limiting factors for the
high-precision top-mass measurements at hadron colliders.
This talk will describe what color reconnection is, how it is modeled in
event generators and how it affects the reconstruction of
top final states, with a particular emphasis on the top mass.
A series of new color reconnection models implemented in Pythia 8...
Sandra Leone
(INFN Pisa)
07/05/2015, 11:00
I will show a summary of the top quark mass measurements at the Tevatron.
In particular, I will concentrate on the evolution of the "template" method
from its first application to the most recent results in the dilepton,
lepton plus jets and all hadronic top pair decay channels
Marina Cobal
(Udine U. & INFN)
07/05/2015, 11:30
The top quark is a fundamental constituent of the Standard Model. Its
properties are accurately predicted by the theory, except for its mass,
which remains a fundamental parameter of the SM. Since the start of the
Large Hadron Collider many million of top-antitop quark pairs are available
for study. With such a statistics, the physics of the top quark has entered
the precision era.
The...
Roberto Chierici
(CMS/IPNL Lyon)
07/05/2015, 14:30
A precise measurement of the top mass is one of the key aspects for testing the Standard Model. A short review of the experimental methodologies used at CMS will be given, including both direct and indirect reconstruction methods. Results will be presented and discussed, with emphasis to the systematic
errors, now dominating the total uncertainty.
The last part of the talk will be devoted...
Dr
Roberto Franceschini
(CERN)
07/05/2015, 15:00
I will review some recent strategies for the top quark mass
measurement, stressing in particular the foundation of each method on
features of the kinematics of top quark production and decay at the Large
Hadron Collider. Some of the advantages and drawbacks are
discussed; in particular, I will present issues connected with the present
status of the event simulations and theoretical...
Vincenzo Branchina
(Catania U. & INFN)
08/05/2015, 10:00
According to the standard analysis, the stability condition of the
EW vacuum mainly depends on the values of the Higgs and top masses,
MH and Mt. For this reason, it has been believed and strongly
stressed in the last years that a precision measurement of Mt will
provide an answer to the crucial question of whether our universe
is in a stable or metastable vacuum, or at the edge of...
Michael Scherer
(Inst. fur Theoretische Physik, Heidelberg)
08/05/2015, 11:00
In view of the measured Higgs mass of 125 GeV, the perturbative renormalization group evolution of the Standard Model suggests that our Higgs vacuum might not be stable. I will present recent work where we connected the usual perturbative approach and the functional renormalization group which allows for a straightforward inclusion of higher-dimensional operators in the presence of an...
