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)
James William Howarth
(Deutsches Elektronen-Synchrotron (DE))
04/08/2016, 09:00
Top Quark and Electroweak Physics
Oral Presentation
Measurements 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...
James Michael Keaveney
(Deutsches Elektronen-Synchrotron (DE))
04/08/2016, 09:20
Top Quark and Electroweak Physics
Oral 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...
Nikolaos Kidonakis
(Kennesaw State University)
04/08/2016, 09:40
Top Quark and Electroweak Physics
Oral Presentation
I 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.
Jan Winter
(Michigan State University (MSU), USA)
04/08/2016, 10:00
Top Quark and Electroweak Physics
Oral Presentation
In 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.
Dr
Yichen Li
(Siegen University)
04/08/2016, 10:20
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Emanuele Re
(LAPTh Annecy)
04/08/2016, 10:40
Top Quark and Electroweak Physics
Oral Presentation
I 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...
German Sborlini
(IFIC-Valencia)
04/08/2016, 11:30
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Cen Zhang
(Brookhaven National Laboratory)
04/08/2016, 11:50
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Antonio Limosani
(University of Sydney (AU))
04/08/2016, 12:10
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Jui-Fa Tsai
(National Taiwan University (TW))
04/08/2016, 12:30
Top Quark and Electroweak Physics
Oral 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...
Abideh Jafari
(Universite Catholique de Louvain (UCL) (BE))
04/08/2016, 12:50
Top Quark and Electroweak Physics
Oral Presentation
Single 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...
Andreas Jung
(Purdue)
04/08/2016, 13:10
Top Quark and Electroweak Physics
Oral Presentation
We 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...
Sebastian Mergelmeyer
(Humboldt-Universitaet zu Berlin (DE))
04/08/2016, 17:00
Top Quark and Electroweak Physics
Oral Presentation
Measurements 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....
Hamed Bakhshiansohi
(CP3, UCL)
04/08/2016, 17:20
Top Quark and Electroweak Physics
Oral 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...
Aleksander Filip Zarnecki
(University of Warsaw)
04/08/2016, 17:40
Top Quark and Electroweak Physics
Oral Presentation
Measurements 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...
Michelangelo Mangano
(CERN)
04/08/2016, 18:00
Top Quark and Electroweak Physics
Oral Presentation
A 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...
Christian Schwanenberger
(Deutsches Elektronen-Synchrotron (DE))
04/08/2016, 18:20
Top Quark and Electroweak Physics
Oral Presentation
Energy-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...
Bing Zhou
(University of Michigan (US))
05/08/2016, 09:00
Top Quark and Electroweak Physics
Oral Presentation
Measurements 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...
Samira Hassani
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
05/08/2016, 09:20
Top Quark and Electroweak Physics
Oral Presentation
Measurements 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...
Christian Gutschow
(TU Dresden (DE))
05/08/2016, 09:35
Top Quark and Electroweak Physics
Oral Presentation
Measurements 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...
Rafael Coelho Lopes De Sa
(Fermi National Accelerator Lab. (US))
05/08/2016, 09:50
Top Quark and Electroweak Physics
Oral Presentation
We 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.
Joshua Milo Kunkle
(University of Maryland (US))
05/08/2016, 10:10
Top Quark and Electroweak Physics
Oral Presentation
We 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....
Admir Greljo
(University of Zurich)
05/08/2016, 10:30
Top Quark and Electroweak Physics
Oral Presentation
Given 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...
Lorenzo Tancredi
(KIT Karlsruhe)
05/08/2016, 10:50
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Daniel Britzger
(DESY)
05/08/2016, 11:30
Top Quark and Electroweak Physics
Oral Presentation
Using 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...
Jiyeon Han
(University of Rochester (US))
05/08/2016, 11:45
Top Quark and Electroweak Physics
Oral Presentation
We 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...
Willis Sakumoto
(University of Rochester, Rochester NY)
05/08/2016, 12:00
Top Quark and Electroweak Physics
Oral Presentation
We present the measurements of forward-backward charge asymmetry $A_{FB} $ in
$p\bar{p}\rightarrow Z/\gamma^{*} \rightarrow e^+ e^-/\mu^+\mu^- + X$ 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, 12:20
Top Quark and Electroweak Physics
Oral Presentation
By 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...
Marco Lisboa Leite
(Universidade de Sao Paulo (BR))
05/08/2016, 12:35
Top Quark and Electroweak Physics
Oral Presentation
New 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...
Amanda Sarkar
(University of Oxford (GB)),
Amanda Sarkar
(University of Oxford (GB)),
amanda sarkar
05/08/2016, 12:50
Top Quark and Electroweak Physics
Oral Presentation
A 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...
Roland Waldi
(University of Rostock)
05/08/2016, 13:05
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Fernando Febres Cordero
(University of Freiburg)
05/08/2016, 17:00
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Sandra Leone
(Universita di Pisa & INFN (IT)),
on behalf CDF Collaboration
(Fermilab)
05/08/2016, 17:20
Top Quark and Electroweak Physics
Oral Presentation
We 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...
Hulin Wang
(Southern Methodist University (US))
05/08/2016, 17:35
Top Quark and Electroweak Physics
Oral Presentation
Vector-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...
Tania Robens
(TU Dresden)
05/08/2016, 17:55
Top Quark and Electroweak Physics
Oral Presentation
In 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...
Fulvio Piccinini
(Universita e INFN, Pavia (IT))
05/08/2016, 18:15
Top Quark and Electroweak Physics
Oral Presentation
The 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.
Graham Wilson
(University of Kansas (US))
05/08/2016, 18:35
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Luca Perrozzi
(Eidgenoessische Tech. Hochschule Zuerich (CH))
06/08/2016, 14:00
Top Quark and Electroweak Physics
Oral 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.
Dr
Jorge de Blas
(INFN Rome)
06/08/2016, 14:20
Top Quark and Electroweak Physics
Oral Presentation
We 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...
Mario Antonelli
(Istituto Nazionale Fisica Nucleare Frascati (IT))
06/08/2016, 14:40
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Zhijun Liang
(Chinese Academy of Sciences (CN))
06/08/2016, 15:00
Top Quark and Electroweak Physics
Oral Presentation
Focusing 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...
Prof.
Freya Blekman
(IIHE, Vrije Universiteit Brussel (BE))
06/08/2016, 15:20
Top Quark and Electroweak Physics
Oral Presentation
In 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...
Frederic Deliot
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
06/08/2016, 16:15
Top Quark and Electroweak Physics
Oral Presentation
We 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...
Andreas Wildauer
(Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
06/08/2016, 16:35
Top Quark and Electroweak Physics
Oral Presentation
The 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...
Elvire Bouvier
(Universite Claude Bernard-Lyon I (FR))
06/08/2016, 16:55
Top Quark and Electroweak Physics
Oral 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.
Measurements of the top quark mass employing alternative...
Peter Marquard
(DESY)
06/08/2016, 17:15
Top Quark and Electroweak Physics
Oral Presentation
I 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.
Moritz Preisser
(University of Vienna)
06/08/2016, 17:35
Top Quark and Electroweak Physics
Oral Presentation
The 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...
