Elementary Particle Physics
ALBUQUERQUE, Ivone Freire da Mota
- Ultra-High Energy Cosmic Rays.
- High Energy Neutrinos.
- Dark Matter.
- Particle Astrophysics.
- Signs of Particle Physics in Astrophysics and Cosmology.
BURDMAN, Gustavo Alberto
Models of Electroweak symmetry. Models of Fermion Mass. Physics beyond the Standard Model. Phenomenology of Collision Rings: Signs of Physics beyond the Standard Model. Phenomenology of Collision Rings: Physics of Heavy Quarks. Signs of Particle Physics in Astrophysics and Cosmology.
The main line of research focuses on the area of Nuclear Physics at intermediate and high energies (40 MeV to 15 TeV).
These activities are developed in Brazil, in collaboration with researchers from Rio de Janeiro-RJ, and Ilhéus-Ba, and in Switzerland through the ALICE collaboration at the Large Hadron Collider (LHC).
The main tools used in both lines of research are computer codes that use the Monte Carlo method to simulate physical processes.
In Brazil, we develop the CRISP code, which simulates nuclear reactions induced by photons (real or virtual) or baryons (protons or neutrons) in the energy range mentioned above. Here the basics of Nuclear Physics and Particle Physics are studied, and applications in Reactor Physics and Medical Physics are explored.
In the LHC, we collaborate in the development of methods for analysis and identification of particles and with data analysis. Also we study models to explain the observed phenomena. The main objective is to study the plasma of quarks and gluons, which is formed in ultra-relativistic heavy ion collisions.
Besides these two main lines, we also develop other studies where Nuclear Physics or the Monte Carlo method can be applied. Currently we are studying the behavior of RNA molecules that evolve under different conditions, observing the flow of information into the system during this evolutionary process.
ÉBOLI, Oscar José Pinto
1) Dynamic symmetry breaking. 2) Search for a new Physics beyond the standard model. 3) Study of quantum effects on the inflationary universe.
1) High Energy Experimental Physics: participation in experiments performed at Fermilab (USA) since 1987. At the moment, I am involved with the analysis of data from experiment KTEV99 (E832/E799), basically in the area of rare decays and neutral kaons. (http://kpasa.fnal.gov:8080/public/ktev.html).
Cosmic Rays. participation in the construction and operation of the Pierre Auger
Cosmic Ray Observatory. The objective of this laboratory, currently under construction but already collecting preliminary data, in Argentina (with a second one to be built in the USA) is to detect air showers produced by cosmic rays above 10EeV (1019 eV), aiming to find out their origin and composition. (http://www.auger.org and http://www.auger.org.ar).
Personal page: http://axpfep1.if.usp.br/~pgouffon
Theoretical study of the high energy nuclear collisions being performed at the particle accelerators RHIC (Brookhaven National Laboratory, New York-USA) and LHC (CERN, Geneva-Switzerland):
These colisions probe the behavior of nuclear matter at high temperatures and pressures. In these conditions, particles such as the nucleons, may melt into their sub-constituents, the quarks and gluons. My work consists in developing an hydrodynamical description of the matter created in the collisions, while trying to extract information on the strong interaction acting between quarks and gluons.
Study of high-energy hadronic interactions: Through phenomenological models (eikonal, hydrodynamic, parton, and bag models, or any other that could be invented), a global view of the various phenomena can be devised, involving strong interaction of elementary particles, such as multiple production with its diverse features (moment distribution, speed, of multiplicities, correlation of identical particles, etc), production of strange particles, phase transitions between the states of quark-gluon plasma and hadron gas, elastic collisions, etc.
Munhoz, Marcelo Gameiro
Study of heavy nucleus collisions at relativistic energies. Those collisions allow the study of nuclear matter in extreme conditions of temperature and pressure. The theory of Quantum Chromodynamics (QCD) predicts that, in those conditions, matter goes through a phase transition to a state of matter named Quark-Gluon Plasma (QGP). In such state, the elementary building blocks of nuclear matter, quarks and gluons would no longer be confined to hadrons, but forming free particle plasma that, according to the Big-Band theory, would correspond to the matter the universe consisted of in its initial moments of formation. The study of QGP formation and its properties can bring important information on the strong interaction between quarks, and can also have consequences in the study of the evolution of the universe.
My interest is focused on the study of strange and heavy quarks (charm and bottom) and their interaction with plasma and on hard parton scattering in QGP. These studies are supported by two international partnerships: The STAR experiment (Solenoidal Tracker at Rhic), that is part of the RHIC particle accelerator (Relativistic Heavy Ion Collider), located in Brookhaven National Laboratory, New York, USA; and the ALICE experiment (A Large Ion Collider Experiment) of the LHC accelerator (Large Hadron Collider), situated in the CERN Laboratory (European Organization for Nuclear Research) in Geneva, Switzerland.
NAVARRA, Fernando Silveira
Relativistic hadronic and nuclear collisions, relativistic hydrodynamics, parton model, and Skyrme's model.
ZUKANOVICH, Renata Funchal
Development of research in the area of elementary particles, with a special emphasis on physics of neutrinos. We work with many phenomenological models, including the Standard Electroweak Model, attempting to unfold data from experiments with neutrinos produced in terrestrial accelerators, nuclear reactors, in Earth's atmosphere and on the Sun in the context of those models. We are also in search of using neutrino systems to test fundamental symmetries, such as CP, T and CPT. neutrinos.if.usp.br