At the Oskar Klein Center there are researchers working hard to figure out the content of the universe and the fundamental laws of physics. Erik Johansson, Professor emeritus at Stockholm University and Director emeritus of the Stockholm House of Science, has created some animations aimed at describing ATLAS collisions happening in Large Hadron Collider at CERN.
When two high energy protons collide, it is the constituents of the protons – the quarks and gluons – that interact. The dynamics of quark and gluon interactions are described in five animations, focusing on the main dynamic features. The animations describe the production of the Higgs boson, top quarks and particle jet production.
Jets of particles – gluon exchange
One very common interaction is the exchange of a gluon between a quark in one of the protons and a quark in the other proton, resulting in several jets of particles.
The Higgs particle – gluon fusion
The Higgs particle is expected to be produced in collisions when a gluon from each of the protons merges in a high energy collision – a gluon fusion.
Top quarks – gluon fusion
A pair of top quarks – a top quark and an antitop quark – is expected to be produced in collisions when a gluon from each of the protons merges in a high energy interaction.
The Z particle – quark antiquark annihilation
The massive Z particle is produced when a quark and an antiquark annihilate.
While the above animation are quite complete, there are some necessary omissions and subtleties that will only be understood with some additional informations. In these articles, Erik Johansson adds more information about these processes: