Publications (53)
Next-to-leading order QCD corrections to top quark spin correlations at hadron colliders: the reactions and
W. Bernreuther, A. Brandenburg, Z. G. Si +1
We have computed the cross section for production by gluon-gluon fusion at next-to-leading order (NLO) in the QCD coupling, keeping the full dependence on the s…
Revisiting Bremsstrahlung emission associated with Light Dark Matter annihilations
C. Boehm, P. Uwer
We compute the single bremsstrahlung emission associated with the pair annihilation of spin-0 particles into electrons and positrons, via the t-channel exchange of a heavy fermion.…
HATHOR for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
P. Kant, O. M. Kind, T. Kintscher +5
We present updated predictions for single top-quark production in hadronic collisions. The analysis is based on next-to-leading order QCD calculations. The input parameters are fix…
Measuring the running top-quark mass
U. Langenfeld, S. Moch, P. Uwer
We present the first direct determination of the running top-quark mass based on the total cross section of top-quark pair-production as measured at the Tevatron. Our theory predic…
The SM and NLO multileg working group: Summary report
T. Binoth, G. Dissertori, J. Huston +88
This report summarizes the activities of the SM and NLO Multileg Working Group of the Workshop "Physics at TeV Colliders", Les Houches, France 8-26 June, 2009.
Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC
S. Dittmaier, P. Uwer, S. Weinzierl
We report on the calculation of the next-to-leading order QCD corrections to the production of top--antitop-quark pairs in association with a hard jet at the Tevatron and at the LH…
Two-loop amplitudes for e+ e- -> q qbar g: the nf-contribution
S. Moch, P. Uwer, S. Weinzierl
We discuss the calculation of the nf-contributions to the two-loop amplitude for e+ e- -> q qbar g. The calculation uses an efficient method based on nested sums. The result is pre…
NLO QCD corrections to WW+jet production at hadron colliders
S. Dittmaier, S. Kallweit, P. Uwer
We report on the calculation of the next-to-leading order QCD corrections to the production of W-boson pairs in association with a hard jet at the Tevatron and the LHC, which is an…
Calculation of two-loop QCD corrections for hadronic single top-quark production in the t channel
M. Assadsolimani, P. Kant, B. Tausk +1
In this article we discuss the calculation of single top-quark production in the t channel at two-loop order in QCD. In particular we present the decomposition of the amplitude acc…
Top quark pair production and decay at hadron colliders
W. Bernreuther, A. Brandenburg, Z. G. Si +1
In ongoing and upcoming hadron collider experiments, top quark physics will play an important role in testing the Standard Model and its possible extensions. In this work we presen…
Top quark pair production and decay at hadron colliders: Predictions at NLO QCD including spin correlations
W. Bernreuther, A. Brandenburg, Z. G. Si +1
We present results at NLO QCD for hadronic production and decay of top quark pairs, taking into account t tbar spin correlations.
Production of heavy Higgs bosons and decay into top quarks at the LHC
W. Bernreuther, P. Galler, C. Mellein +2
We investigate the production of heavy, neutral Higgs boson resonances and their decays to top-quark top-antiquark () pairs at the Large Hadron Collider (LHC) at next-to-…
Spin properties of top quark pairs produced at hadron colliders
W. Bernreuther, A. Brandenburg, Z. G. Si +1
We discuss the spin properties of top quark pairs produced at hadron colliders at next-to-leading order in the coupling constant alpha_s of the strong interaction. Specifically we…
Phenomenological studies of top-pair production + jet at NLO
S. Dittmaier, P. Uwer, S. Weinzierl
In this talk we discuss top-quark pair production in association with an additional jet. We present numerical results based on a next-to-leading order QCD calculation.
Heavy-quark pair production at two loops in QCD
S. Moch, P. Uwer
We present updated predictions for the total cross section of top-quark pair production at Tevatron and LHC. For the LHC we also provide results at sqrt(s) = 10 TeV, in view of the…
The top-quark's running mass
S. Moch, U. Langenfeld, P. Uwer
We discuss the direct determination of the running top-quark mass from measurements of the total cross section of hadronic top-quark pair-production. The theory predictions in the…
Next-to-leading order QCD corrections to parity-violating 3-jet observables for massive quarks in e^+e^- annihilation
W. Bernreuther, A. Brandenburg, P. Uwer
In this work we provide all the missing ingredients for calculating parity-violating 3-jet observables in e^+e^- collisions at next-to-leading order (NLO) including the full quark…
AutoDipole - Automated generation of dipole subtraction terms -
K. Hasegawa, S. Moch, P. Uwer
We present an automated generation of the subtraction terms for next-to-leading order QCD calculations in the Catani-Seymour dipole formalism. For a given scattering process with n…
New results for t bar t production at hadron colliders
U. Langenfeld, S. Moch, P. Uwer
We present new theoretical predictions for the t bar t production cross section at NNLO at the Tevatron and the LHC. We discuss the scale uncertainty and the errors due to the part…
QCD corrections to single top quark production in electron photon interactions
J. H. Kühn, C. Sturm, P. Uwer
Single top quark production in electron photon interactions provides a clean environment for the measurement of the Cabbibo-Kobayashi-Maskawa matrix element Vtb. Aiming an experime…
Polarization and spin correlations of top quarks at a future e+ e- linear collider
A. Brandenburg, M. Flesch, P. Uwer
We discuss the polarization and spin correlations of top quarks produced above threshold at a future linear collider, including QCD radiative corrections.
Top quark spin correlations at hadron colliders: Predictions at next-to-leading order QCD
W. Bernreuther, A. Brandenburg, Z. G. Si +1
The collider experiments at the Tevatron and the LHC will allow for detailed investigations of the properties of the top quark. This requires precise predictions of the hadronic pr…
Measurement of the running b-quark mass using events
A. Brandenburg, P. N. Burrows, D. Muller +2
We have studied the determination of the running b-quark mass, , using decays into 3 or more hadronic jets. We calculated the ratio of -jet fractions in $e^+…
Investigation of Top quark spin correlations at hadron collider
W. Bernreuther, A. Brandenburg, Z. G. Si +1
We report on our results about hadronic production at NLO QCD including spin effects, especially on spin correlations.
The NLO multileg working group: summary report
Z. Bern, S. Dittmaier, L. Dixon +44
This report summarizes the activities of the NLM working group of the Workshop "Physics at TeV Colliders", Les Houches, France, 11-29 June, 2007.
QCD-corrected spin analysing power of jets in decays of polarized top quarks
A. Brandenburg, Z. G. Si, P. Uwer
We present results for the differential distributions of jets from non-leptonic decays of polarized top quarks within the Standard Model, including QCD radiative corrections. Our w…
NLO QCD corrections to t tbar + jet production at hadron colliders
S. Dittmaier, P. Uwer, S. Weinzierl
We report on the calculation of the next-to-leading order QCD corrections to the production of top--anti-top quark pairs in association with a hard jet at the Tevatron and at the L…
-- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
M. Aliev, H. Lacker, U. Langenfeld +3
We present a program to calculate the total cross section for top-quark pair production in hadronic collisions. The program takes into account recent theoretical developments such…
Top quark pair + jet production at next-to-leading order: NLO QCD corrections to gg -> t tbar g
A. Brandenburg, S. Dittmaier, P. Uwer +1
The reaction pp/pbar p -> t tbar jet+X is an important background process for Higgs boson searches in the mass range below 200 GeV. Apart from that it is also an ideal laboratory f…
Weak Interactions in Top-Quark Pair Production at Hadron Colliders: An Update
J. H. Kühn, A. Scharf, P. Uwer
Weak corrections for top-quark pair production at hadron colliders are revisited. Predictions for collider energies of 8 TeV, adopted to the recent LHC run, and for 13 as well as 1…
Top Quark Physics at Colliders
E. W. N. Glover, F. del Aguila, J. A. Aguilar--Saavedra +22
We review some recent developments in top quark production and decay at current and future colliders.
QCD two-loop amplitudes for e+e- --> 3 jets: the fermionic contribution
S. Moch, P. Uwer, S. Weinzierl
We review a new technique for the calculation of two-loop amplitudes and discuss as an example the fermionic contributions to e+ e- --> q qbar g.
Scattering amplitudes for e^+e^- --> 3 jets at next-to-next-to-leading order QCD
S. Moch, P. Uwer, S. Weinzierl
We present the calculation of the fermionic contribution to the QCD two-loop amplitude for e^+e^- --> q qbar g.
Top Quark Pair Production and Decay including Spin Effects at Hadron Colliders: Predictions at NLO QCD
W. Bernreuther, A. Brandenburg, Z. G. Si +1
Top quark-antiquark () pairs will be produced copiously at the Tevatron collider and in huge numbers at the LHC. This will make possible detailed investigations of the pro…
Extracting the top-quark running mass using +1-jet events produced at the Large Hadron Collider
J. Fuster, A. Irles, D. Melini +2
We present the calculation of the next-to-leading order QCD corrections for top-quark pair production in association with an additional jet at hadron colliders, using the modified…
Weak effects in b-jet production at hadron colliders
J. H. Kuhn, A. Scharf, P. Uwer
One of the main challenges of the Tevatron at Fermilab and the Large Hadron Collider (LHC) at CERN is the determination of Standard Model (SM) parameters at the TeV scale. In this…
NLO QCD corrections to pp/ppbar --> WW+jet+X including leptonic W-boson decays
S. Dittmaier, S. Kallweit, P. Uwer
We report on the calculation of the next-to-leading order QCD corrections to the production of W-boson pairs in association with a hard jet at the Tevatron and the LHC, which is an…
Automating dipole subtraction
K. Hasegawa, S. Moch, P. Uwer
We report on automating the Catani-Seymour dipole subtraction which is a general procedure to treat infrared divergences in real emission processes at next-to-leading order in QCD.…
Next-to-Leading Order QCD corrections to Three-Jet Rates with Massive Quarks
W. Bernreuther, A. Brandenburg, P. Uwer
The reaction annihilation into three jets was recently computed for massive quarks at next-to-leading order in perturbative QCD. We discuss some results of our calculation…
Parity-violating 3-jet observables for massive quarks to order alphas^2 in e+e- annihilation
W. Bernreuther, A. Brandenburg, P. Uwer
In this talk we discuss the calculation of the QCD corrections to parity-violating 3-jet observables in e^+e^- collisions, keeping the full quark mass dependence.
Next-to-leading order QCD corrections to jets with massive quarks
A. Brandenburg, W. Bernreuther, P. Uwer
We discuss a calculation of the next-to-leading order QCD corrections to the process jets with massive quarks, and show numerical results for the three jet fraction a…
- XSummer - Transcendental Functions and Symbolic Summation in Form
S. Moch, P. Uwer
Harmonic sums and their generalizations are extremely useful in the evaluation of higher-order perturbative corrections in quantum field theory. Of particular interest have been th…
Electroweak corrections to top-quark pair production in quark--antiquark annihilation
J. H. Kuhn, A. Scharf, P. Uwer
Top-quark physics plays an important role at hadron colliders such as the Tevatron at Fermilab or the LHC at CERN. Given the planned precision at these colliders, precise theoretic…
Top-quark pair + 1-jet production at next-to-leading order QCD
S. Dittmaier, P. Uwer, S. Weinzierl
Top-quark pair production with an additional jet is an important signal and background process at the LHC. We present the next-to-leading order QCD calculation for this process and…
From the LHC to Future Colliders
A. De Roeck, J. Ellis, C. Grojean +61
Discoveries at the LHC will soon set the physics agenda for future colliders. This report of a CERN Theory Institute includes the summaries of Working Groups that reviewed the phys…
Physics at the e+ e- Linear Collider
G. Moortgat-Pick, H. Baer, M. Battaglia +60
A comprehensive review of physics at an e+e- Linear Collider in the energy range of sqrt{s}=92 GeV--3 TeV is presented in view of recent and expected LHC results, experiments from…
Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
S. Alioli, S. Badger, J. Bellm +44
We present an update of the Binoth Les Houches Accord (BLHA) to standardise the interface between Monte Carlo programs and codes providing one-loop matrix elements.
Top-quark pair production near threshold at LHC
Y. Kiyo, J. H. Kühn, S. Moch +2
The next-to-leading order analysis for the cross section for hadroproduction of top quark pairs close to threshold is presented. Within the framework of non-relativistic QCD a sign…
Les Houches 'Physics at Tev Colliders 2003' QCD/SM Working Group: Summary Report
M. Dobbs, S. Frixione, E. Laenen +52
This report documents the results obtained by the Working Group on Quantum Chromodynamics and the Standard Model for the Workshop `Physics at TeV Colliders'', Les Houches, France,…
High precision fundamental constants at the TeV scale
S. Moch, S. Weinzierl, S. Alekhin +20
This report summarizes the proceedings of the 2014 Mainz Institute for Theoretical Physics (MITP) scientific program on "High precision fundamental constants at the TeV scale". The…
On top-pair hadro-production at next-to-next-to-leading order
S. Moch, P. Uwer, A. Vogt
We study the QCD corrections at next-to-next-to-leading order (NNLO) to the cross section for the hadronic pair-production of top quarks. We present new results in the high-energy…
The spin density matrix of top quark pairs produced in electron-positron annihilation including QCD radiative corrections
A. Brandenburg, M. Flesch, P. Uwer
We calculate the spin density matrix of top quark pairs for the reaction to order . As an application we show next-to-leading order results for a variet…
Electroweak effects in top-quark pair production at Hadron Colliders
J. H. Kuhn, A. Scharf, P. Uwer
Top-quark physics plays an important role at hadron colliders such as the Tevatron collider at Fermilab or the upcoming Large Hadron Collider (LHC) at CERN. Given the planned exper…