Gluon distributions and fits using dipole cross sections

Gluon Distributions and Fits using Dipole Cross-Sections

I investigate the relationship between the gluon distribution obtained using a dipole model fit to low-x data on F2(x,Q 2) and standard gluons obtained from global fits with the collinear factorization theorem at fixed order. I stress the necessity to do fits of this type carefully, and in particular to include the contribution from heavy flavours to the inclusive structure function. I find tha...

96 Ww Cross - Sections and Distributions

Diffractive Dis Cross Sections and Parton Distributions

Highlights are presented mainly from two recent measurements of the diffractive Deep Inelastic Scattering cross section at HERA. In the first, the process ep → eXp is studied by tagging the leading final state proton. In the second, events of this type are selected by requiring a large rapidity gap devoid of hadronic activity in the proton direction. The two measurements are compared in detail ...

Diffractive Dis Cross Sections and Parton Distributions

Highlights are presented mainly from two recent measurements of the diffractive Deep Inelastic Scattering cross section at HERA. In the first, the process ep → eXp is studied by tagging the leading final state proton. In the second, events of this type are selected by requiring a large rapidity gap devoid of hadronic activity in the proton direction. The two measurements are compared in detail ...

Top Quark Cross Sections and Differential Distributions

I present results for the top quark pair total cross section and the top quark transverse momentum distribution at Tevatron and LHC energies. I also present results for single top quark production. All calculations include NNLO corrections from NNLL threshold resummation. TOP-ANTITOP PAIR PRODUCTION The leading order processes for top-antitop pair production are qq̄ → tt̄ (dominant at the Tevatro...