Conveners
Top Quark and Electroweak Physics: 1
- Pedro Vieira De Castro Ferreira Da Silva (CERN)
Top Quark and Electroweak Physics: 2
- Doreen Wackeroth (SUNY Buffalo)
Top Quark and Electroweak Physics: 3
- Pedro Vieira De Castro Ferreira Da Silva (CERN)
Top Quark and Electroweak Physics: 4
- Joao Barreiro Guimaraes Da Costa (Chinese Academy of Sciences (CN))
Top Quark and Electroweak Physics: 5
- Doreen Wackeroth (SUNY Buffalo)
Top Quark and Electroweak Physics: 6
- Joao Barreiro Guimaraes Da Costa (Chinese Academy of Sciences (CN))
Top Quark and Electroweak Physics: 7
- Joao Barreiro Guimaraes Da Costa (Chinese Academy of Sciences (CN))
Top Quark and Electroweak Physics: 8
- Pedro Vieira De Castro Ferreira Da Silva (CERN)
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James William Howarth (Deutsches Elektronen-Synchrotron (DE))04/08/2016, 09:00Top Quark and Electroweak PhysicsOral PresentationMeasurements of the inclusive and differential top-quark pair production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented at a center of mass energy of 8 TeV and 13 TeV. The inclusive measurements reach high precision and are compared to the best available theoretical calculations. Differential measurements of the kinematic...Go to contribution page
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James Michael Keaveney (Deutsches Elektronen-Synchrotron (DE))04/08/2016, 09:20Top Quark and Electroweak PhysicsOral Presentation
Precision measurements are presented of the top-quark pair inclusive production cross section in proton-proton collisions at the LHC at centre-of-mass energies of 7, 8 and 13 TeV. The data are collected with the CMS experiment during the years 2011, 2012, and 2015. The analyses profit from different top quark final states and make use of events with two, one or no reconstructed charged...
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Nikolaos Kidonakis (Kennesaw State University)04/08/2016, 09:40Top Quark and Electroweak PhysicsOral PresentationI present new results and updates for total cross sections and differential distributions in top-antitop pair and single-top production. Soft-gluon corrections are added to exact fixed-order results to provide the best predictions up to N^3LO. Total cross sections and transverse-momentum and rapidity distributions are presented and compared with data at LHC and Tevatron energies.Go to contribution page
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Jan Winter (Michigan State University (MSU), USA)04/08/2016, 10:00Top Quark and Electroweak PhysicsOral PresentationIn the last few years we have seen a number of advances in the higher order calculation of this more complex final state. I will review these new developments and illustrate how they impact existing approaches in Monte Carlo event generation and experimental measurements of the top-quark antitop-quark sector.Go to contribution page
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Dr Yichen Li (Siegen University)04/08/2016, 10:20Top Quark and Electroweak PhysicsOral PresentationThe large integrated luminosity provided by the LHC enables the production of a significant number of top-quark pairs in association with addition jets or additional gauge bosons. The production of top-quark pairs in association with W and Z bosons is presented. The measurement uses events with multiple leptons and in particular probes the coupling between the top quark and the Z boson. The...Go to contribution page
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Emanuele Re (LAPTh Annecy)04/08/2016, 10:40Top Quark and Electroweak PhysicsOral PresentationI will give an overview of recent progress in the simulation of final states involving top-quarks and vector bosons pair. In the first part of the talk, I'll discuss the obstacles, and present recently found solutions needed to simulate, at NLO+PS accuracy, fully differential top pair production (pp -> 4 leptons + b bar), retaining exactly offshellness and interference effects. In the second...Go to contribution page
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German Sborlini (IFIC-Valencia)04/08/2016, 11:30Top Quark and Electroweak PhysicsOral PresentationThe computation of perturbative corrections to processes involving heavy quarks is crucial for the precision program of LHC and future colliders. In this talk, we describe a powerful method to calculate higher-orders in QCD skipping the traditional subtraction method. Our proposal is based in the loop-tree duality (LTD) theorem, which allows to rewrite virtual contributions in terms of...Go to contribution page
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Cen Zhang (Brookhaven National Laboratory)04/08/2016, 11:50Top Quark and Electroweak PhysicsOral PresentationThe standard model (SM) effective field theory (EFT) is a powerful approach to the SM deviations, where predictions can be systematically improved in precision. I will discuss some recent progresses and ongoing efforts in developing the SM EFT to next-to-leading order (NLO) accuracy, in particular in the top-quark sector. Based on the MadGraph5_aMC@NLO framework, one can start from an EFT...Go to contribution page
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Antonio Limosani (University of Sydney (AU))04/08/2016, 12:10Top Quark and Electroweak PhysicsOral PresentationThe top quark is unique among the known quarks in that it decays before it has an opportunity to form hadronic bound states. This makes measurements of its properties particularly interesting as one can access directly the properties of a bare quark. The latest measurements of these properties are presented. Measurements of the charge asymmetry in top-quark pair, which probe models of physics...Go to contribution page
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Jui-Fa Tsai (National Taiwan University (TW))04/08/2016, 12:30Top Quark and Electroweak PhysicsOral Presentation
Measurements are presented of the properties of top quarks in pair production from proton-proton collisions at the LHC. The data were collected at pp centre-of-mass energies of 7 and 8 TeV by the CMS experiment during the years 2011 and 2012. The charge asymmetry is measured using the difference of the absolute rapidities of the reconstructed top and anti-top kinematics, as well as from...
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Abideh Jafari (Universite Catholique de Louvain (UCL) (BE))04/08/2016, 12:50Top Quark and Electroweak PhysicsOral PresentationSingle top topologies are exploited for studies of top quark properties. This includes the first measurement of single top polarization in the t-channel production mode in pp collisions, which directly confirms the V-A nature of the tWb production vertex. W-helicity fractions are measured in the phase space sampled by a selection optimized for t-channel single top production, orthogonal to the...Go to contribution page
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Andreas Jung (Purdue)04/08/2016, 13:10Top Quark and Electroweak PhysicsOral PresentationWe present recent measurements on top properties obtained in $t\bar t$ events produced in $p\bar p$ collisions at a center-of-mass energy of 1.96 TeV at the Tevatron Collider. We first present a measurement of the spin correlations strength obtained with a matrix element technique applied to dilepton and lepton plus jets final states in $9.7\,$fb$^{-1}$ of data accumulated with the D0...Go to contribution page
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Sebastian Mergelmeyer (Humboldt-Universitaet zu Berlin (DE))04/08/2016, 17:00Top Quark and Electroweak PhysicsOral PresentationMeasurements of single top-quark production in proton proton collisions are presented at a center of mass energy of 8 TeV and 13 TeV. A measurement of the cross section where a W boson is exchanged in the t-channel is discussed. The single top-quark and anti-top total production cross sections, their ratio, as well as measurements of the inclusive production cross sections are presented....Go to contribution page
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Hamed Bakhshiansohi (CP3, UCL)04/08/2016, 17:20Top Quark and Electroweak PhysicsOral Presentation
Measurements are presented of t-channel single top quark production in proton-proton collisions at the LHC at centre-of-mass energies of 7, 8 and 13 TeV, using data collected with the CMS experiment during the years 2011, 2012 and 2015. The analyses consider leptonic decay channels of the W from the top decays, and makes use of kinematic characteristics of electroweak single top production for...
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Aleksander Filip Zarnecki (University of Warsaw)04/08/2016, 17:40Top Quark and Electroweak PhysicsOral PresentationMeasurements of top quark production at e+e- colliders can provide a leap in precision in our knowledge of top quark properties and open a new window on physics beyond the Standard Model. In this contribution the top quark physics prospects of linear colliders is reviewed. Progress in detailed full-simulation studies is reported for the highlights of the programme. We present the prospects for...Go to contribution page
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Michelangelo Mangano (CERN)04/08/2016, 18:00Top Quark and Electroweak PhysicsOral PresentationA 100 TeV pp collider, with a statistics of a trillion produced top quarks, offers many opportunities for precision measurements of the top quark couplings, searches of rare or forbidden decays, and studies of production in extreme kinematical configurations, potentially sensitive to new short-distance phenomena, and an important background to many searches for new physics. This presentation...Go to contribution page
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Christian Schwanenberger (Deutsches Elektronen-Synchrotron (DE))04/08/2016, 18:20Top Quark and Electroweak PhysicsOral PresentationEnergy-frontier deep inelastic scattering at 1000 times higher luminosity than HERA is considered with the LHeC and further the FCC-he. These collider configurations provide unique possibilities for SM and BSM top physics, for novel electroweak precision measurements and for further BSM investigations such as for lepto-partons at the FCC-he. The high precision PDF and $\alpha_s$ information...Go to contribution page
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Bing Zhou (University of Michigan (US))05/08/2016, 09:00Top Quark and Electroweak PhysicsOral PresentationMeasurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has measured inclusive and differential cross sections of the production of ZZ pairs in final states with four...Go to contribution page
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Samira Hassani (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))05/08/2016, 09:20Top Quark and Electroweak PhysicsOral PresentationMeasurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has performed detailed measurements of integrated and differential cross sections of the production of WW pairs...Go to contribution page
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Christian Gutschow (TU Dresden (DE))05/08/2016, 09:35Top Quark and Electroweak PhysicsOral PresentationMeasurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has performed detailed measurements of integrated and differential cross sections of the production of WZ pairs...Go to contribution page
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Rafael Coelho Lopes De Sa (Fermi National Accelerator Lab. (US))05/08/2016, 09:50Top Quark and Electroweak PhysicsOral PresentationWe present studies of diboson production in pp collisions based on data recorded by the CMS detector at the LHC. These include precise measurements the production cross section of these processes at center-of-mass energies of 7, 8 and 13 TeV . The decay modes of the W and Z bosons are used. The results are interpreted in terms of constraints on anomalous triple and quartic gauge couplings.Go to contribution page
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Joshua Milo Kunkle (University of Maryland (US))05/08/2016, 10:10Top Quark and Electroweak PhysicsOral PresentationWe present studies of diboson and triboson production in pp collisions based on data recorded by the CMS detector at the LHC. These include precise measurements the production cross section of these processes at center-of-mass energies of 8 and 13 TeV . Final states where one or more photons are produced in association of W and Z bosons, reconstructed through their decay products, are used....Go to contribution page
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Admir Greljo (University of Zurich)05/08/2016, 10:30Top Quark and Electroweak PhysicsOral PresentationGiven many possible forms that physics Beyond the Standard Model (BSM) could take, it is important to pursue a bottom-up approach in which as few assumptions as possible about the BSM sector are made. In this talk, we present a combined analysis of LHC Run-I Higgs data (signal strengths) together with LEP-II WW production measurements. To characterize possible deviations from the Standard...Go to contribution page
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Lorenzo Tancredi (KIT Karlsruhe)05/08/2016, 10:50Top Quark and Electroweak PhysicsOral PresentationThe study of vector boson pair (VV) production at the LHC provides some of the most interesting observables both for Standard Model (SM) and Beyond Standard Model (BSM) physics. In particular, the production of pairs of vector bosons for energies above their production threshold is of crucial importance, on one side as a direct test of the electroweak sector of the standard model and on the...Go to contribution page
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Daniel Britzger (DESY)05/08/2016, 11:30Top Quark and Electroweak PhysicsOral PresentationUsing inclusive DIS cross sections measured with the H1 experiment at HERA, electroweak parameters of the Standard Model are probed. The cross sections were determined using longitudinally polarized lepton beams, which enhances the sensitivity to the vector couplings of the light quarks. The quark couplings and the electroweak mixing angle are probed through the $\gamma /Z$ interference. This...Go to contribution page
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Jiyeon Han (University of Rochester (US))05/08/2016, 11:45Top Quark and Electroweak PhysicsOral PresentationWe present measurements of the forward backward asymmetry in the Drell-Yan dilepton events and a study of extracting the weak mixing angle with the data sample of pp collisions at sqrt(s) at 8 TeV collected by CMS in 2012. Thanks to the large data sample, corresponding to about 19/fb, and new techniques, statistical and systematic uncertainties are significantly improved compared with the...Go to contribution page
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Willis Sakumoto (University of Rochester, Rochester NY)05/08/2016, 12:00Top Quark and Electroweak PhysicsOral Presentation
We present the measurements of forward-backward charge asymmetry $A_{FB} $ in
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$p\bar{p}\rightarrow Z/\gamma^{*} \rightarrow e^+ e^-/\mu^+\mu^- + X$ events
using $\sim 10\ $fb$^{-1}$ of $ p\bar p$ data collected at $\sqrt s=1.96\ $TeV by the D0
and CDF detectors at the Fermilab Tevatron collider. $A_{FB}$ is measured as a function
of the invariant mass of the dilepton system to extract the... -
Xabier Cid Vidal (Universidade de Santiago de Compostela)05/08/2016, 12:20Top Quark and Electroweak PhysicsOral PresentationBy using proton-proton collision data of the LHC Run I, LHCb measured the forward-backward charge asymmetry for the process \bar q q โ> Z/ฮณ* โ> mu+mu- . We will present these results, which, within the Standard Model, provide the best constrain of the effective electroweak mixing angle at hadron colliders. Additionally, the measurement of the top production cross section, also performed with...Go to contribution page
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Marco Lisboa Leite (Universidade de Sao Paulo (BR))05/08/2016, 12:35Top Quark and Electroweak PhysicsOral PresentationNew results on the production of single W bosons with two jets at high invariant mass at a centre-of-mass energy of 8 TeV are presented using data corresponding to 20.3 /fb. Integrated and differential cross sections are measured in many different phase space regions with varying degree of sensitivity to the electroweak production in vector boson fusion and compared to earlier results of...Go to contribution page
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Amanda Sarkar (University of Oxford (GB)), amanda sarkar05/08/2016, 12:50Top Quark and Electroweak PhysicsOral PresentationA simultaneous fit of parton distribution functions (PDFs) and electroweak parameters to HERA data on deep inelastic scattering is presented. The input data are the neutral current and charged current inclusive cross sections which were previously used in the QCD analysis leading to the HERAPDF2.0 PDFs. In addition, the polarisation of the electron beam was taken into account for the ZEUS data...Go to contribution page
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Roland Waldi (University of Rostock)05/08/2016, 13:05Top Quark and Electroweak PhysicsOral PresentationThe BABAR Collaboration has an intensive programย studying hadronic cross sections in low-energy e+e- annihilations, which are accessible with data taken near the Upsilon(4S) via initial-state radiation. Our measurements allow significant improvements in the precision of the predicted value of the muon anomalous magnetic moment. These improvements are necessary for shedding light on the...Go to contribution page
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Fernando Febres Cordero (University of Freiburg)05/08/2016, 17:00Top Quark and Electroweak PhysicsOral PresentationThe increase in energy and luminosity at the LHC during Run II allows for a detailed study of vector boson pair production in association with multiple jets. These type of processes can be exploited for measurements of gauge couplings, are connected to top-quark production and also appear in search channels of physics beyond the Standard Model. In this talk we present NLO QCD corrections to...Go to contribution page
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Sandra Leone (Universita di Pisa & INFN (IT)), on behalf CDF Collaboration (Fermilab)05/08/2016, 17:20Top Quark and Electroweak PhysicsOral PresentationWe present the CDF measurement of the diboson WW and WZ production cross section in a final state consistent with leptonic W decay and jets originating from heavy flavor quarks, based on the full Tevatron Run II dataset. The analysis of the di-jet invariant mass spectrum allows the observation of 3.7 sigma evidence for the combined production processes of either WW or WZ bosons. The...Go to contribution page
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Hulin Wang (Southern Methodist University (US))05/08/2016, 17:35Top Quark and Electroweak PhysicsOral PresentationVector-boson scattering processes provide a unique way to probe the mechanism of electroweak symmetry breaking. Similar physics can be probed by studying the production of three gauge bosons. The results can also be used for a model-independent search for new physics at the TeV scale via anomalous quartic gauge couplings. The ATLAS collaboration has studied vector boson scattering in final...Go to contribution page
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Tania Robens (TU Dresden)05/08/2016, 17:55Top Quark and Electroweak PhysicsOral PresentationIn the second run of the LHC, which started in April 2015, an accurate understanding of Standard Model processes is more crucial than ever. Processes including electroweak gauge bosons serve as standard candles for SM measurements, and equally constitute important background for BSM searches. We here present the NLO QCD virtual contributions to W+W- + jet in an analytic format obtained through...Go to contribution page
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Fulvio Piccinini (Universita e INFN, Pavia (IT))05/08/2016, 18:15Top Quark and Electroweak PhysicsOral PresentationThe immense energies available at a 100 TeV pp collider can probe EW interactions in new regimes. Virtual effects, as well as emission of gauge bosons, have an important impact on the dynamics of processes in the multi-TeV energy range. This presentation reviews recent results, obtained in the framework of the Future Circular Collider Study.Go to contribution page
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Graham Wilson (University of Kansas (US))05/08/2016, 18:35Top Quark and Electroweak PhysicsOral PresentationThe International Linear Collider (ILC) project aims to build a linear electron-positron collider capable of precision physics measurements at center-of-mass energies ranging from 91 GeV to 1 TeV using polarized electrons and positrons. In this contribution an overview is presented of the potential of such a machine to advance precision studies of electroweak physics with an emphasis on...Go to contribution page
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Luca Perrozzi (Eidgenoessische Tech. Hochschule Zuerich (CH))06/08/2016, 14:00Top Quark and Electroweak PhysicsOral Presentation
A precise O(10 MeV) measurement of the W boson mass is a stringent test of the standard model. The talk will discuss the experimental and theoretical challenges that need to be faced in order to achieve this level of precision. In addition, the status of various experimental studies, calibrations and state-of-the-art simulations related with this measurement will be presented.
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Dr Jorge de Blas (INFN Rome)06/08/2016, 14:20Top Quark and Electroweak PhysicsOral PresentationWe revisit the global fit to electroweak precision observables in the Standard Model (SM), including the indirect determination of SM parameters and a detailed analysis of the compatibility between the SM and experimental data. We present updated constraints on general extensions of the SM (oblique parameters: STU and (delta)epsilons, modified Zbb couplings, modified Higgs couplings to vector...Go to contribution page
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Mario Antonelli (Istituto Nazionale Fisica Nucleare Frascati (IT))06/08/2016, 14:40Top Quark and Electroweak PhysicsOral PresentationThe Future Circular Collider with electron-positron beams (FCC-ee) should provide improvements of the electroweak precision measurement concerning Z, W, H and their masses by a large factor over the present status. The unparalleled experimental precision would open, via Electroweak loop corrections, a broad discovery potential for new, at least weakly interacting particles up to high energy...Go to contribution page
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Zhijun Liang (Chinese Academy of Sciences (CN))06/08/2016, 15:00Top Quark and Electroweak PhysicsOral PresentationFocusing on the Post-Higgs-Discovery era of High Energy Frontier, the CEPC is envisioned to be a future circular collider with multiple operation phases. The CEPC has a total circumference of at least 54 km and at least two interaction points. In its 10 years operation at ~240 GeV, it will collect a sample of ~1M e+e- -> ZH events. CEPC will also collide e+e- at ~M(Z) producing 10 billion Z...Go to contribution page
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Prof. Freya Blekman (IIHE, Vrije Universiteit Brussel (BE))06/08/2016, 15:20Top Quark and Electroweak PhysicsOral PresentationIn the framework of the FCC project, the FCC-ee collider program contains a specific run at the center of mass energy around 350 GeV with an integrated luminosity corresponding to the production of about 1 Million top quark pairs. The ultimate goal is to obtain the most precise measurement of the top mass with a threshold scan from 340 to 350 GeV. However, the top physics program at the...Go to contribution page
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Frederic Deliot (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))06/08/2016, 16:15Top Quark and Electroweak PhysicsOral PresentationWe report on the most recent measurements of the mass of the heaviest known standard model particle, the top quark, obtained with the D0 detector at the Fermilab Tevatron collider. We use the full Run II dataset corresponding to $9.7\ $fb$^{-1}$ of $p\bar p$ collisions at $\sqrt s=1.96\ $TeV. We present direct measurements of the top mass in the dilepton decay channels using the matrix...Go to contribution page
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Andreas Wildauer (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)06/08/2016, 16:35Top Quark and Electroweak PhysicsOral PresentationThe top quark mass is one of the fundamental parameters of the Standard Model. The latest ATLAS measurements of the top quark mass are presented. A measurement using lepton+jets events is presented, where a multi-dimensional template fit is used to constrain the uncertainties on the energy measurements of jets. The measurements using dilepton and all-hadronic events are also discussed. In...Go to contribution page
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Elvire Bouvier (Universite Claude Bernard-Lyon I (FR))06/08/2016, 16:55Top Quark and Electroweak PhysicsOral Presentation
Measurements of the top quark mass are presented using data collected by the CMS experiment in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV. Analyses in several decay channels of top quark pair events are employed to determine the top quark mass. The results are combined and compared to the world average.
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Measurements of the top quark mass employing alternative... -
Peter Marquard (DESY)06/08/2016, 17:15Top Quark and Electroweak PhysicsOral PresentationI will present recent results for the relation between the MSbar mass and the on-shell and related threshold masses based on our recent calculation of the four MSbar-on-shell relation.Go to contribution page
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Moritz Preisser (University of Vienna)06/08/2016, 17:35Top Quark and Electroweak PhysicsOral PresentationThe lack of knowledge how the top quark mass parameter in Monte-Carlo event generators (MCs) is related to field theoretically defined mass schemes limits the theoretical interpretation of the top quark mass measurements based on templates obtained from direct reconstruction analyses at hadron colliders. In the first part of the talk I review the conceptual aspects of the problem and argue...Go to contribution page