The High Energy Theory Group has active programs in all areas of particle physics, encompassing Standard Model and beyond, and lattice gauge techniques. Topics of interest include electroweak symmetry breaking and related phenomena, collider physics, precision measurements, physics of flavor, higher order calculations, neutrino interactions, phenomenology of dark sectors, and particle cosmology.
SEP
12
Tuesday
Physics Colloquium
"Momentum-space structure of hadrons and nuclei at high energy"
Presented by Elena Petreska, NIKHEF
3:30 pm, Large Seminar Room, Bldg. 510
Tuesday, September 12, 2017, 3:30 pm
Transverse-momentum-dependent (TMD) distributions describe the configuration of quarks and gluons inside protons and nuclei in three-dimensional momentum space. Observables in scattering experiments can be calculated with the help of TMD factorization formulas, where the target and projectile are represented with non-perturbative TMD distributions, which are separated from the short-distance perturbative part of the collision. A complementary approach to study the momentum structure of protons and nuclei at high energy is the Color Glass Condensate which is an effective theory for the high-gluon-density region of ultra-relativistic particles. We introduce both theories and we discuss connections between them. We present phenomenological results derived from these connections.