Large Hadron Collider continues to search for the origin of the universe
After discovering the Higgs boson the experiments are now directed towards discovering dark matter which corresponds to 27% of the energy/matter in the universe.Bogotá D. C., 10 de octubre de 2016 — Agencia de Noticias UN-
UNal students took part of the conference. Many of them are currently working on the analysis of the results of these experiments.
John Ellis, King's College Researcher and former director of the European Organization for Nuclear Research (CERN) visited the Universidad Nacional de Colombia (UNal) in Bogotá to explain the latest discoveries of the experiments carried out at the Large Hadron Collider (LHD).
Four years ago CERN researchers discovered a new particle which proves the existence of the Higgs boson, an elementary particle in the Standard Model of particle physics.
This particle is part of the theory proposed in 1960 by Peter Higgs and other scientists which hoped to explain how particles obtain mass. This discovery was considered as one of the greatest scientific achievements of the last 50 years.
It is known that elemental particles such as quarks and electrons are the basis for all matter in the universe which is key information for the voids in current physics.
“This particle has a very important role in physics because without it atoms, electrons and life itself wouldn’t exist. Through particle physics and with these discoveries we continue to research where we come from, what we are and where we are heading, and know how the universe is made,” said Ellis.
Experiments carried out in the collider consist of accelerating particles with two directed and opposed beams reaching 99.99% the speed of light. When they collide it produces high energies which mimic what happened immediately after the Big Bang.
According to Ellis the following step is to find dark matter which according to several theories is comprised of particles with a mass under 1TeV (teraelectron volt) which is equivalent to 1,000 the mass of a proton.
Among these theories is supersymmetry which refers to the hypothetical symmetry which could relate the properties of bosons and fermions (electrons, protons and neutrons), besides offering additional candidates to explain dark matter.
UNal has carried out analyses to explain different phenomena which occur in the LHC. For instance the Elemental Particle Phenomenology Research Group is working on analyzing the LHCb (Large Hadron Collider beauty experiment), another detector included in the collider and used to identify particles created in very small periods of time (femtoseconds, 10−15 of a second).
Several UNal-Bogotá Department of Physics professors have also tried to explain the detection of an unexpected energy excess which may be interpreted as a new particle in nature.
According to researchers this anomaly could be a new particle not defined by physics laws that describe particles and fields registered in nature.
Among the goals of these experiments is the search for new physics. Up to now the standard model only reaches certain point and has shown to be true in low energy levels but surely in higher energies other particles may be discovered.(Por: Fin/VC/DMH/LOF