N3LO+N3LL QCD improved Higgs pair cross sections

QCD resummation and heavy quark cross sections

of the Dissertation QCD resummation and heavy quark cross sections by Nikolaos Kidonakis Doctor of Philosophy in Physics State University of New York at Stony Brook 1996 In this dissertation a detailed analysis of heavy quark production is given with an emphasis on the resummation of soft gluon corrections. First we calculate the production cross sections for top quark production at the Fermila...

NNLL Resummation for QCD Cross Sections

Sudakov Resummation of Multiparton Qcd Cross Sections

We present the general expressions for the resummation, up to next-to-leading logarithmic accuracy, of Sudakov-type logarithms in processes with an arbirtrary number of hard-scattering partons. These results document the formulae used by the authors in several previous phenomenological studies. The resummation formulae presented here, which are valid for phase-space factorizable observables, de...

QCD Corrections to Higgs Pair Production in Bottom Quark Fusion

We present a complete next-to-leading order (NLO) calculation for the total cross section of inclusive Higgs pair production via bottom-quark fusion (bb̄ → hh) at the CERN Large Hadron Collider (LHC) in the Standard Model. The NLO QCD corrections lead to less dependence on the renormalization scale (μR) and the factorization scale (μF ) than the leading-order (LO) cross section, and they signifi...

Improved formulation of global QCD analysis with zero-mass hard cross sections

The zero-mass (ZM) parton formalism is widely used in high-energy physics because of its simplicity and historical importance, even while massive quarks (c, b, t) are playing an increasingly prominent role in particle phenomenology, including global QCD analyses of parton distributions based on the more precise general-mass (GM) QCD formalism. In view of this dichotomy, we show how the obvious ...