Publications (166)
Four-Particle Phase Space Integrals in Massless QCD
A. Gehrmann-De Ridder, T. Gehrmann, G. Heinrich
The inclusive four-particle phase space integral of any matrix element in massless QCD contains divergences due to the soft and collinear emission of up to two particles i…
The QCD/SM Working Group: Summary Report
S. Alekhin, C. Balazs, R. Ball +57
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,…
Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report
J. Bendavid, F. Caola, V. Ciulli +102
This Report summarizes the proceedings of the 2017 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt with (I) new developments relevant for high precision Standard…
The colourful antenna subtraction method
T. Gehrmann, E. W. N. Glover, M. Marcoli
We present a general subtraction scheme for NNLO calculations in massless QCD: the \textit{colourful antenna subtraction method}. It is a reformulation of the antenna subtraction a…
Analytic form of the full two-loop five-gluon all-plus helicity amplitude
S. Badger, D. Chicherin, T. Gehrmann +6
We compute the full-color two-loop five-gluon amplitude for the all-plus helicity configuration. In order to achieve this, we calculate the required master integrals for all permut…
Photon isolation effects at NLO in gamma gamma + jet final states in hadronic collisions
T. Gehrmann, N. Greiner, G. Heinrich
We present the NLO QCD corrections to diphoton plus jet production at hadron colliders. Our calculation includes contributions from the fragmentation of a hadronic jet into a highl…
Two-Loop Fermionic Corrections to Heavy-Quark Pair Production: the Quark-Antiquark Channel
R. Bonciani, A. Ferroglia, T. Gehrmann +2
We evaluate the fermionic two-loop QCD corrections to the heavy-quark pair production process in the quark-antiquark channel. We obtain analytic results which are valid for any val…
The Effects of a New Vector Boson on the Top Quark Cross Section at the Tevatron
T. Gehrmann, W. J. Stirling
It has recently been shown that a new neutral vector boson , with a mass of order 1~TeV and weak couplings to quarks only, could explain both the anomalous values of and…
Drell-Yan asymmetries at HERA-
T. Gehrmann, W. J. Stirling
The production of Drell-Yan pairs in the double polarized mode of HERA- is studied at next-to-leading order in QCD. It is found that a measurement of this observable c…
Les Houches Physics at TeV Colliders 2005, Standard Model and Higgs working group: Summary report
C. Buttar, S. Dittmaier, V. Drollinger +118
This Report summarises the activities of the "SM and Higgs" working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. On the one hand, we perf…
Hadronization effects in event shape moments
T. Gehrmann, M. Jaquier, G. Luisoni
We study the moments of hadronic event shapes in annihilation within the context of next-to-next-to-leading order (NNLO) perturbative QCD predictions combined with non-per…
Parton Radiation and Fragmentation from LHC to FCC-ee
David d'Enterria, Peter Z. Skands, D. Anderle +53
This document collects the proceedings of the "Parton Radiation and Fragmentation from LHC to FCC-ee" workshop (http://indico.cern.ch/e/ee\_jets16) held at CERN in Nov. 2016. The w…
Two-Loop QCD Corrections to the Heavy Quark Form Factors: Axial Vector Contributions
W. Bernreuther, R. Bonciani, T. Gehrmann +4
We consider the Z Q Qbar vertex to second order in the QCD coupling for an on-shell massive quark-antiquark pair and for arbitrary momentum transfer of the Z boson. We present clos…
Second-order QCD corrections to event shape distributions in deep inelastic scattering
T. Gehrmann, A. Huss, J. Mo +1
We compute the next-to-next-to-leading order (NNLO) QCD corrections to event shape distributions and their mean values in deep inelastic lepton-nucleon scattering. The magnitude an…
NNLO QCD corrections in full colour for jet production observables at the LHC
X. Chen, T. Gehrmann, E. W. N. Glover +2
Calculations for processes involving a high multiplicity of coloured particles often employ a leading colour approximation, where only the leading terms in the expansion of the num…
N3LO Corrections to Jet Production in Deep Inelastic Scattering using the Projection-to-Born Method
J. Currie, T. Gehrmann, E. W. N. Glover +3
Computations of higher-order QCD corrections for processes with exclusive final states require a subtraction method for real-radiation contributions. We present the first-ever gene…
Two-Parton Contribution to the Heavy-Quark Forward-Backward Asymmetry in NNLO QCD
W. Bernreuther, R. Bonciani, T. Gehrmann +3
Forward-backward asymmetries, , are important observables for the determination of the neutral-current couplings of heavy quarks in inclusive heavy quark production, $e^+…
Heavy-Quark Form Factors and Threshold Cross Section at O(α_S^2)
W. Bernreuther, R. Bonciani, T. Gehrmann +4
During the last year, analytic expressions for the two-loop QCD corrections to the form factors for the vector, axial-vector, scalar and pseudo-scalar vertices involving a pair of…
Jet Physics at Two-Loop Accuracy
T. Gehrmann
Current phenomenological studies of jet observables at colliders are clearly limited by the theoretical uncertainties inherent in the next-to-leading order QCD description. We disc…
Measuring from Azimuthal Asymmetries in Deep Inelastic Scattering
T. Gehrmann
We demonstrate that the angular distribution of hadrons produced in semi-inclusive deep inelastic final states is related to the inclusive longitudinal structure function. This rel…
NNLO Photon Production with Realistic Photon Isolation
X. Chen, T. Gehrmann, E. W. N. Glover +3
Isolated photon production at hadron colliders proceeds via direct production and fragmentation processes. Theory predictions for the isolated photon and photon-plus-jet cross sect…
e^+ e^- -> 3 jets and event shapes at NNLO
G. Dissertori, A. Gehrmann-De Ridder, T. Gehrmann +3
We report on the calculation of NNLO corrections to the 3-jet cross section and related event shape distributions in electron-positron annihilation. The corrections are sizable for…
Precision QCD with the Electron-Ion Collider
C. Alexandrou, M. Arratia, E. C. Aschenauer +66
This document summarizes the discussions at the program "Precision QCD with the Electron Ion Collider", held from May to June 2025 at the Institute for Nuclear Theory (INT) at the…
Calculation of the quark and gluon form factors to three loops in QCD
T. Gehrmann, E. W. N. Glover, T. Huber +2
We describe the calculation of the three-loop QCD corrections to quark and gluon form factors. The relevant three-loop Feynman diagrams are evaluated and the resulting three-loop F…
Production of -pairs at HERA-
T. Gehrmann
The production of -pairs as a possible measure of the polarized gluon distribution is studied for proton--nucleon collisions at $\sqrt{s} =40\;\mbox{GeV}^2$ (HERA-$\…
The three-loop singlet contribution to the massless axial-vector quark form factor
T. Gehrmann, A. Primo
We compute the three-loop corrections to the quark axial vector form factor in massless QCD, focusing on the pure-singlet contributions where the axial vector current couples to a…
Inclusive and Diffractive Structure Functions at Small x
W. Buchmuller, T. Gehrmann, A. Hebecker
In the semiclassical approach, inclusive and diffractive quark and gluon distributions are expressed in terms of correlation functions of Wilson loops. Each Wilson loop integrates…
Vector Boson Production in Association with a Jet at Forward Rapidities
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +2
Final states with a vector boson and a hadronic jet allow one to infer the Born-level kinematics of the underlying hard scattering process, thereby probing the partonic structure o…
Photon Radiation with MadDipole
T. Gehrmann, N. Greiner
We present the automation of a subtraction method for photon radiation using the dipole formalism within the MadGraph framework. The subtraction terms are implemented both in dimen…
Spin physics in deep inelastic scattering: Summary
T. Gehrmann, T. Sloan
The problem of our understanding of the spin structure of the nucleon has been with us since the publication of the EMC measurements of the polarised structure function of the prot…
The Large Hadron-Electron Collider at the HL-LHC
P. Agostini, H. Aksakal, S. Alekhin +333
The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting ener…
Calculations for deep inelastic scattering using fast interpolation grid techniques at NNLO in QCD and the extraction of from HERA data
D. Britzger, J. Currie, A. Gehrmann-De Ridder +9
The extension of interpolation-grid frameworks for perturbative QCD calculations at next-to-next-to-leading order (NNLO) is presented for deep inelastic scattering (DIS) processes.…
Determination of the strong coupling constant using matched NNLO+NLLA predictions for hadronic event shapes in e+e- annihilations
G. Dissertori, A. Gehrmann-De Ridder, T. Gehrmann +4
We present a determination of the strong coupling constant from a fit of QCD predictions for six event-shape variables, calculated at next-to-next-to-leading order (NNLO) and match…
Infrared structure of e+e- --> 3 jets at NNLO
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We describe the calculation of the next-to-next-to-leading order (NNLO) QCD corrections to three-jet production and related event shape observables in electron-positron annihilatio…
QCD Corrections to Static Heavy Quark Form Factors
W. Bernreuther, R. Bonciani, T. Gehrmann +4
Interactions of heavy quarks, in particular of top quarks, with electroweak gauge bosons are expected to be very sensitive to new physics effects related to electroweak symmetry br…
Spin Asymmetries in Squark and Gluino Production at Polarized Hadron Colliders
T. Gehrmann, D. Maitre, D. Wyler
We study the production cross sections for squarks and gluinos in collision of longitudinally polarized hadrons. The corresponding polarized partonic cross sections are computed in…
Azimuthal Asymmetries in Hadronic Final States at HERA
M. Ahmed, T. Gehrmann
The distribution of hadrons produced in deeply inelastic electron-proton collisions depends on the azimuthal angle between lepton scattering plane and hadron production plane in th…
Vector Meson Production at a Polarized HERA Collider
S. P. Baranov, M. G. Ryskin, T. Gehrmann
A successful interpretation of the cross sections for elastic and inelastic vector meson production can be made if one assumes the underlying dynamics to be governed by hard parton…
Physics with Polarized Protons at HERA
A. De Roeck, T. Gehrmann
The operation of HERA with polarized proton and electron beams will allow to study a wide variety of observables in polarized electron-proton collisions at GeV. The p…
Two-Loop QCD Helicity Amplitudes for ~Jets
L. W. Garland, T. Gehrmann, E. W. N. Glover +2
We compute the two-loop QCD helicity amplitudes for the process e^+e^- --> q bar{q} g. The amplitudes are extracted in a scheme-independent manner from the coefficients appearing i…
Event shapes in annhilation at NNLO
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We report first results on the calculation of NNLO corrections to event shape distributions in electron-positron annhilation. The corrections are sizeable for all variables, howeve…
Summary: Spin Physics
T. Gehrmann
The spin physics parallel sessions at this workshop made a critical review of the physics potential of future experiments on polarized nucleons, with an emphasis on the potential i…
Future Circular Collider Feasibility Study Report: Volume 1, Physics, Experiments, Detectors
M. Benedikt, F. Zimmermann, B. Auchmann +1461
Volume 1 of the FCC Feasibility Report presents an overview of the physics case, experimental programme, and detector concepts for the Future Circular Collider (FCC). This volume o…
Combined analysis of diffractive and inclusive structure functions in the semiclassical framework
W. Buchmuller, T. Gehrmann, A. Hebecker
Small-x DIS is described as the scattering of a partonic fluctuation of the photon off a superposition of target color fields. Diffraction occurs if the emerging partonic state is…
Event Generators for High-Energy Physics Experiments
J. M. Campbell, M. Diefenthaler, T. J. Hobbs +209
We provide an overview of the status of Monte-Carlo event generators for high-energy particle physics. Guided by the experimental needs and requirements, we highlight areas of acti…
Les Houches 2019: Physics at TeV Colliders: Standard Model Working Group Report
S. Amoroso, P. Azzurri, J. Bendavid +80
This Report summarizes the proceedings of the 2019 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt with (I) new developments for high precision Standard Model cal…
QCD corrections to the longitudinally polarized Drell-Yan process
T. Gehrmann
In this paper we calculate the O() corrections to the - and -distributions of lepton pairs produced in collisions of longitudinally polarized hadrons. The numerical i…
The Two-Loop QCD Matrix Element for Jets
L. W. Garland, T. Gehrmann, E. W. N. Glover +2
We compute the virtual QCD corrections to the $γ^*\to q\bar q g$ matrix element arising from the interference of the two-loop with the tree-level amplitude and…
QCD Corrections to Double and Single Spin Asymmetries in Vector Boson Production at Polarized Hadron Colliders
T. Gehrmann
The production of and bosons in collisions of longitudinally polarized protons allows to access various combinations of the polarized quark distributions from the s…
NNLO interpolation grids for jet production at the LHC
D. Britzger, A. Gehrmann-De Ridder, T. Gehrmann +8
Fast interpolation-grid frameworks facilitate an efficient and flexible evaluation of higher-order predictions for any choice of parton distribution functions or value of the stron…
On the Relation of the LHeC and the LHC
J. L. Abelleira Fernandez, C. Adolphsen, P. Adzic +206
The present note relies on the recently published conceptual design report of the LHeC and extends the first contribution to the European strategy debate in emphasising the role of…
Transverse momentum distributions in low-mass Drell-Yan lepton pair production at NNLO QCD
R. Gauld, A. Gehrmann-De Ridder, T. Gehrmann +4
The production of lepton pairs at low invariant mass and finite transverse momentum resolves QCD dynamics at the boundary between the perturbative and non-perturbative domains. We…
Two-Loop Quark and Gluon Form Factors in Dimensional Regularisation
T. Gehrmann, T. Huber, D. Maitre
We compute the two-loop corrections to the massless quark form factor $γ^* \to q\bar q$ and gluon form factor to all orders in the dimensional regularisation parameter $…
Six-Photon Amplitudes
T. Binoth, T. Gehrmann, G. Heinrich +1
We present analytical results for all six-photon helicity amplitudes. For the computation of this loop induced process two recently developed methods, based on form factor decompos…
Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions
H1, ZEUS Collaborations, : +234
The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA da…
NNLO QCD corrections to event shape variables in electron positron annihilation
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
Precision studies of QCD at electron-positron colliders are based on measurements of event shapes and jet rates. To match the high experimental accuracy, theoretical predictions to…
Analytic Approaches to the Evolution of Polarised Parton Distributions at Small
T. Gehrmann, W. J. Stirling
The evolution of polarised parton distributions at small is studied. Various analytic approximations are critically discussed. We compare the full evolution with that obt…
A comparative study of Higgs boson production from vector-boson fusion
A. Buckley, X. Chen, J. Cruz-Martinez +9
The data taken in Run II at the LHC have started to probe Higgs boson production at high transverse momentum. Future data will provide a large sample of events with boosted Higgs b…
Tools for NNLO QCD Calculations
T. Gehrmann
For precision studies with QCD observables at colliders, higher order perturbative corrections are often mandatory. For exclusive observables, like jet cross sections or differenti…
Gluon-Gluon Antenna Functions from Higgs Boson Decay
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover
Antenna functions describe the infrared singular behaviour of colour-ordered QCD matrix elements due to the emission of unresolved partons inside an antenna formed by two hard part…
NNLO QCD corrections to the transverse momentum distribution of weak gauge bosons
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +2
The transverse momentum spectra of weak gauge bosons and their ratios probe the underlying dynamics and are crucial in testing our understanding of the Standard Model. They are an…
Spin-dependent Parton Distributions
T. Gehrmann, W. J. Stirling
We perform a global leading-order QCD fit to recent polarized structure function data in order to extract a consistent set of spin-dependent parton distributions. Assuming that the…
NNLO QCD corrections for Drell-Yan and observables at the LHC
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +2
Drell-Yan lepton pairs with finite transverse momentum are produced when the vector boson recoils against (multiple) parton emission(s), and is determined by QCD dynamics. At small…
Matching of Resummed NLLA with Fixed NNLO for Event Shapes
T. Gehrmann, G. Luisoni, H. Stenzel
We report work on the matching of the next-to-leading logarithmic approximation (NLLA) onto the fixed next-to-next-to-leading order (NNLO) calculation for event shape variables in…
Precise QCD predictions for W-boson production in association with a charm jet
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +3
The production of a -boson with a charm quark jet provides a highly sensitive probe of the strange quark distribution in the proton. Employing a novel flavour dressing procedure…
All master integrals for three-jet production at NNLO
D. Chicherin, T. Gehrmann, J. M. Henn +3
We evaluate analytically all previously unknown nonplanar master integrals for massless five-particle scattering at two loops, using the differential equations method. A canonical…
Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report
J. Butterworth, G. Dissertori, S. Dittmaier +76
This Report summarizes the proceedings of the 2013 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt primarily with (1) the techniques for calculating standard mode…
Infrared structure of jets at NNLO: QED-type contributions
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
The NNLO QCD corrections to the jets can be decomposed according to their colour factors. Out of the seven colour factors, three are of QED-type: , an…
Analytic result for a two-loop five-particle amplitude
D. Chicherin, T. Gehrmann, J. M. Henn +3
We compute the symbol of the full-color two-loop five-particle amplitude in super Yang-Mills, including all non-planar subleading-color terms. The amplitude is writ…
ZZ production at hadron colliders in NNLO QCD
F. Cascioli, T. Gehrmann, M. Grazzini +7
We report on the first calculation of next-to-next-to-leading order (NNLO) QCD corrections to the inclusive production of ZZ pairs at hadron colliders. Numerical results are presen…
Report of the 2005 Snowmass Top/QCD Working Group
A. Juste, Y. Kiyo, F. Petriello +15
This report discusses several topics in both top quark physics and QCD at an International Linear Collider (ILC). Issues such as measurements at the threshold, including…
Jet rates in electron-positron annihilation at O(α_s^3) in QCD
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We compute production rates for two, three, four and five jets in electron-positron annihilation at the third order in the QCD coupling constant. At this order, three-jet productio…
Antenna subtraction for jet production observables in full colour at NNLO
X. Chen, T. Gehrmann, E. W. N. Glover +1
We describe the details of the calculation of the full colour NNLO QCD corrections to jet production observables at the LHC with antenna subtraction. All relevant matrix elements f…
A Large Hadron Electron Collider at CERN
J. L. Abelleira Fernandez, C. Adolphsen, P. Adzic +206
This document provides a brief overview of the recently published report on the design of the Large Hadron Electron Collider (LHeC), which comprises its physics programme, accelera…
Determination of the strong coupling constant in next-to-next-to-leading order QCD using H1 jet cross section measurements
H1 collaboration, V. Andreev, A. Baghdasaryan +145
The strong coupling constant is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic scattering (DIS) measured at HERA by the H…
The NNLO QCD corrections to Z boson production at large transverse momentum
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +2
The transverse momentum distribution of massive neutral vector bosons can be measured to high accuracy at hadron colliders. The transverse momentum is caused by a partonic recoil,…
Antenna subtraction at NNLO with hadronic initial states: initial-final configurations
A. Daleo, A. Gehrmann-De Ridder, T. Gehrmann +1
We extend the antenna subtraction method to include initial states containing one hadron at NNLO. We present results for all the necessary subtraction terms, antenna functions, for…
Antenna subtraction with hadronic initial states
A. Daleo, T. Gehrmann, D. Maitre
The antenna subtraction method for the computation of higher order corrections to jet observables and exclusive cross sections at collider experiments is extended to include hadron…
Jet cross sections and transverse momentum distributions with NNLOJET
T. Gehrmann, X. Chen, J. Cruz-Martinez +9
This talk discusses recent results for next-to-next-to-leading order (NNLO) QCD corrections to jet cross sections and transverse momentum distributions. The results are obtained in…
Analytic form of the two-loop planar five-gluon all-plus-helicity amplitude in QCD
T. Gehrmann, J. M. Henn, N. A. Lo Presti
Virtual two-loop corrections to scattering amplitudes are a key ingredient to precision physics at collider experiments. We compute the full set of planar master integrals relevant…
Numerical Evaluation of Two-Dimensional Harmonic Polylogarithms
T. Gehrmann, E. Remiddi
The two-dimensional harmonic polylogarithms $\G(\vec{a}(z);y)$, a generalization of the harmonic polylogarithms, themselves a generalization of Nielsen's polylogarithms, appear in…
Using differential equations to compute two-loop box integrals
T. Gehrmann, E. Remiddi
The calculation of exclusive observables beyond the one-loop level requires elaborate techniques for the computation of multi-leg two-loop integrals. We discuss how the large numbe…
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.
TESLA Technical Design Report Part III: Physics at an e+e- Linear Collider
R. -D. Heuer, D. J. Miller, F. Richard +236
The TESLA Technical Design Report Part III: Physics at an e+e- Linear Collider
Matching NLLA+NNLO for event shape distributions
T. Gehrmann, G. Luisoni, H. Stenzel
We study the matching of the next-to-leading logarithmic approximation (NLLA) onto the fixed next-to-next-to-leading order (NNLO) calculation for event shape distributions in elect…
NNLO QCD corrections to Higgs boson production at large transverse momentum
X. Chen, J. Cruz-Martinez, T. Gehrmann +2
We derive the second-order QCD corrections to the production of a Higgs boson recoiling against a parton with finite transverse momentum, working in the effective field theory in w…
Precision phenomenology with fiducial cross sections in the triple-differential Drell-Yan process
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +3
The production of lepton pairs (Drell-Yan process) at the LHC is being measured to high precision, enabling the extraction of distributions that are triply differential in the di-l…
Isolated photon and photon+jet production at NNLO QCD accuracy and the ratio
X. Chen, T. Gehrmann, N. Glover +2
We discuss different approaches to photon isolation in fixed-order calculations and present a new next-to-next-to-leading order (NNLO) QCD calculation of , the ratio o…
Working Group Report on the Structure of the Proton
B. Badelek, J. Bartels, N. Brook +5
We summarize the developments on the structure of the proton that were studied at the Workshop on "HERA Physics" that was held in Durham in September 1995. We survey the latest str…
Precise QCD predictions for the production of a Z boson in association with a hadronic jet
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +2
We compute the cross section and differential distributions for the production of a Z boson in association with a hadronic jet to next-to-next-to-leading order (NNLO) in perturbati…
Two-Loop Planar Corrections to Heavy-Quark Pair Production in the Quark-Antiquark Channel
R. Bonciani, A. Ferroglia, T. Gehrmann +1
We evaluate the planar two-loop QCD diagrams contributing to the leading color coefficient of the heavy-quark pair production cross section, in the quark-antiquark annihilation cha…
Precise predictions for boosted Higgs production
K. Becker, F. Caola, A. Massironi +20
Inclusive Higgs boson production at large transverse momentum is induced by different production channels. We focus on the leading production through gluon fusion, and perform a co…
NNLO moments of event shapes in e+e- annihilation
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We compute the next-to-next-to-leading order (NNLO) QCD corrections to the first five moments of six event shape variables related to three-particle final states in electron-positr…
First results on e^+e^- -> 3 jets at NNLO
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
Precision studies of QCD at colliders are based on measurements of event shapes and jet rates. To match the high experimental accuracy, theoretical predictions to next-to-…
NNLOJET: a parton-level event generator for jet cross sections at NNLO QCD accuracy
A. Huss, L. Bonino, O. Braun-White +37
The antenna subtraction method for NNLO QCD calculations is implemented in the NNLOJET parton-level event generator code to compute jet cross sections and related observables in el…
The two-loop five-particle amplitude in supergravity
D. Chicherin, T. Gehrmann, J. M. Henn +3
We compute for the first time the two-loop five-particle amplitude in supergravity. Starting from the known integrand, we perform an integration-by-parts reduction…
The polarized Drell-Yan process at O(α_s)
T. Gehrmann
The results of a recent calculation of the QCD corrections to the polarized Drell-Yan process are summarized. Some implications for the production of vector bosons at RHIC are disc…
Jet production in charged-current deep-inelastic scattering to third order in QCD
T. Gehrmann, J. Niehues, A. Huss +2
The production of jets in charged-current deep-inelastic scattering (CC DIS) probes simultaneously the strong and the electroweak sectors of the Standard Model; its measurement pro…
QCD corrections to longitudinal spin asymmetries in -boson production at RHIC
C. von Arx, T. Gehrmann
The polarized antiquark distributions in the proton can be measured by studying spin asymmetries in vector boson production in longitudinally polarized proton-proton collisions. Th…
Fiducial cross sections for the four-lepton decay mode in Higgs-plus-jet production up to NNLO QCD
X. Chen, T. Gehrmann, E. W. N. Glover +1
The four-lepton decay mode of the Higgs boson allows for a clean kinematic reconstruction, thereby enabling precision studies of the Higgs boson properties and of its production dy…