Transverse correlation of charm pairs, ψψ and partons transverse momenta

Transverse momenta of partons in high-energy scatter- ing processes

The central topic of these lectures is the proton. We want to grasp its structure. On the one hand as part of our quest to understand the heart of the matter, at least the visible matter, in our universe. On the other hand because protons besides electrons are basic tools in experiments that probe the fundamental forces in nature. Therefore we want to use their properties, global ones like ener...

Transverse spin and transverse momenta in hard scattering processes

Inclusive and semi-inclusive deep inelastic leptoproduction offers possibilities to study details of the quark and gluon structure of the hadrons involved. In many of these experiments polarization is an essential ingredient. We also emphasize the dependence on transverse momenta of the quarks, which leads to azimuthal asymmetries in the produced hadrons.

Large Transverse Momenta and Tsallis Thermodynamics

The charged particle transverse momentum (pT ) spectra measured by the ATLAS and CMS collaborations in proton proton collisions at √ s = 0.9 and 7 TeV have been studied using Tsallis thermodynamics. A thermodynamically consistent form of the Tsallis distribution is used for fitting the transverse momentum spectra at mid-rapidity. It is found that the fits based on the proposed distribution prov...

Theohies of High Transverse Momenta Phenomena

Gluon transverse momenta and charm quark-antiquark pair production in p− p̄ collisions at Tevatron

We discuss and compare different approaches to include gluon transverse momenta for heavy quark-antiquark pair production. The correlations in azimuthal angle and in heavy quark, heavy antiquark transverse momenta are studied in detail. The results are illustrated with the help of different unintegrated gluon distribution functons (UGDF) from the literature. We compare results obtained with ons...