Radja Boughezal

Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion

We compute the 3-loop (ααs) correction to the Higgs boson production cross section arising from light quarks using an effective theory approach. Our calculation probes the factorization of QCD and electroweak perturbative corrections to this process. We combine our results with the best current estimates for contributions from top and bottom quarks to derive an updated theoretical prediction for the Higgs boson production cross section in gluon fusion. With the use of the MSTW 2008 parton distribution functions that include the newest experimental data, our study results in cross sections approximately 4–6% lower for intermediate Higgs boson masses than those used in recent Tevatron analyses that imposed a 95% confidence level exclusion limit of a Standard Model Higgs boson with MH = 170 GeV.

Z-boson production in association with a jet at next-to-next-to-leading order in perturbative QCD

We present the first complete calculation of Z-boson production in association with a jet in hadronic collisions through next-to-next-to-leading order in perturbative QCD. Our computation uses the recently proposed N-jettiness subtraction scheme to regulate the infrared divergences that appear in the real-emission contributions. We present phenomenological results for 13xa0TeV proton-proton collisions with fully realistic fiducial cuts on the final-state particles. The remaining theoretical uncertainties after the inclusion of our calculations are at the percent level, making the Z+jet channel ready for precision studies at the LHC run II.

Higgs boson production in association with a jet at next-to-next-to-leading order in perturbative QCD

A bstractWe report on a calculation of the cross-section for Higgs boson production in gluon fusion in association with a hadronic jet at next-to-next-to-leading order (NNLO) in perturbative QCD. The computational technique is discussed in detail. We show explicitly how to employ known soft and collinear limits of scattering amplitudes to construct subtraction terms for NNLO computations. Cancellation of singularities is demonstrated numerically for the collinearly-subtracted gg → H + j cross-section through NNLO and the finite σgg→Hj cross-section is computed through

Charm- and bottom-quark masses from perturbative QCD

mathcal{O}left( {alpha_s^5} right)

Higgs Boson Production in Association with a Jet at Next-to-Next-to-Leading Order

as a function of the center-of-mass collision energy. We present numerical results for the gluon-fusion contribution to Higgs production in association with a jet at the LHC. The NNLO QCD corrections significantly reduce the residual scale dependence of the cross-section. The computational method that we describe in this paper is applicable to the calculation of NNLO QCD corrections to any other 2 → 2 process at a hadron collider without modification.

Subtraction scheme for next-to-next-to-leading order computations

Using a new result for the first moment of the hadronic production cross section at order

Antenna subtraction at NNLO with hadronic initial states: double real radiation for initial-initial configurations with two quark flavours

mathcal{O}({ensuremath{alpha}}_{s}^{3})

Physics at a 100 TeV pp collider: Standard Model processes

, and new data on the

Color-singlet production at NNLO in MCFM

J/ensuremath{psi}

Four-Loop Tadpoles: Applications in QCD

and