Publications (16)
NLO merging in tt+jets
Marek Schonherr, Stefan Hoeche, Junwu Huang +2
In this talk the application of the recently introduced methods to merge NLO calculations of successive jet multiplicities to the production of top pairs in association with jets w…
Efficient Color-Dressed Calculation of Virtual Corrections
Walter Giele, Zoltan Kunszt, Jan Winter
With the advent of generalized unitarity and parametric integration techniques, the construction of a generic Next-to-Leading Order Monte Carlo becomes feasible. Such a generator w…
CT14 Intrinsic Charm Parton Distribution Functions from CTEQ-TEA Global Analysis
Tie-Jiun Hou, Sayipjamal Dulat, Jun Gao +7
We investigate the possibility of a (sizable) nonperturbative contribution to the charm parton distribution function (PDF) in a nucleon, theoretical issues arising in its interpret…
NLO QCD corrections to W+b W-antib production at hadron colliders: new developments and new issues
Jan Winter
This short summary reviews the recent progress in the computation of higher-order corrections to W+b W-antib production. In addition, new phenomenological studies reveal potential…
Data driving the top quark forward--backward asymmetry with a lepton-based handle
Adam Falkowski, Michelangelo L. Mangano, Adam Martin +2
We propose that, within the standard model, the correlation between the forward--backward asymmetry and the corresponding lepton-based asymmetry -- a…
Theory uncertainties of the irreducible background to VBF Higgs production
Xuan Chen, Silvia Ferrario Ravasio, Yacine Haddad +7
Higgs boson production through gluon fusion in association with two jets is an irreducible background to Higgs boson production through vector boson fusion, one of the most importa…
Systematic improvement of QCD parton showers
Jan Winter, Stefan Hoeche, Hendrik Hoeth +5
In this contribution, we will give a brief overview of the progress that has been achieved in the field of combining matrix elements and parton showers. We exemplify this by focusi…
New trends in modern event generators
Tanju Gleisberg, Stefan Hoeche, Frank Krauss +5
Some features of modern simulation tools for high-energy physics are reviewed.
NLO QCD corrections to W+ W- b anti-b production with leptonic decays in the light of top quark mass and asymmetry measurements
Gudrun Heinrich, Andreas Maier, Richard Nisius +2
We present the NLO QCD corrections to the processes p p and p anti-p to W+ W- b anti-b including leptonic decays of the W bosons. Non-resonant contributions as well as diagrams wit…
CTEQ-TEA parton distribution functions with intrinsic charm
Marco Guzzi, Tie-Jiun Hou, Sayipjamal Dulat +7
The possibility of a (sizable) nonperturbative contribution to the charm parton distribution function (PDF) in a nucleon is investigated together with theoretical issues arising in…
Temperature dependent determination of electron heat capacity and electron-phonon factor for FeCrNi
Jan Winter, Jürgen Sotrop, Stephan Borek +2
A theoretical approach using ab initio calculations has been applied to study the interaction of an ultra-short laser pulse with the metal alloy FeCrNi (A…
NLO QCD corrections to WWbb production and top quark observables
Johannes Schlenk, Gudrun Heinrich, Jan Winter
We present the NLO QCD corrections to the production of a W+W- pair and two b-jets, including the leptonic decays of the W bosons. Contributions from singly resonant and non-resona…
Calculation of QCD loops using tree-level matrix elements
Jan Winter
The possibility of treating colour in one-loop amplitude calculations alike the other quantum numbers is briefly discussed for semi-numerical algorithms based on generalized unitar…
Monte Carlo event generators & the top quark forward--backward asymmetry
Jan Winter, Peter Z. Skands, Bryan R. Webber
The leading-order accurate description of top quark pair production, as usually employed in standard Monte Carlo event generators, gives no rise to the generation of a forward--bac…
Zero and one jet combined NLO analysis of the top quark forward-backward asymmetry
Stefan Hoeche, Junwu Huang, Gionata Luisoni +2
We present an analysis of the forward-backward asymmetry in the production of top quark pairs at the Tevatron collider. We use novel Monte Carlo methods for merging matrix elements…
QCD Coherence and the Top Quark Asymmetry
Peter Z. Skands, Bryan R. Webber, Jan Winter
Coherent QCD radiation in the hadroproduction of top quark pairs leads to a forward--backward asymmetry that grows more negative with increasing transverse momentum of the pair. Th…