Radio emission from particle showers can be used as a method of neutrino detection in the high and very high energy range as a Cherenkov pulse originates from the charge excess developing in the ...medium. Our study presents simulations of neutrino induced showers in rock salt and the radio emission that they generate, using the HERWIG, GEANT4 and AIRES codes. We have performed a complete study of all neutrino flavours interacting on nuclei, both for charged-current and neutral-current interactions, using the knowledge and codes available today. As primary neutrino energies we have chosen three values: 1012eV, 1015eV and 1017eV. We have injected all the particles resulting from the first interactions into shower simulation codes.
Salt is one of the dielectric media proposed for radio detection of neutrinos already in the sixties of last century, and can be found in large volumes throughout the world.
The calculation of the radio signal was performed considering the entire shower evolution, by approximating the shower with a current density. We have taken into account, in the equations, only the longitudinal profile. The aim of this study is to investigate whether different interactions can be discriminated in an experiment for detection of high energy particles based on the radio emission from the showers they initiate in a dense medium. For this we have performed and systematically analyzed simulations from several points of view.
Experiments at the RHIC and LHC can recreate quark-gluon plasma conditions similar to those when the Universe was less than a few microseconds old, and will offer the best prospects to discover how ...the Universe evolved in early stages. In this work we study the (anti)deuteron-to-(anti)proton ratio obtained in heavy ion collisions at relativistic energies and compare the results with the ratio obtained from Big Bang nucleosynthesis.
Relativistic heavy-ion collisions offer a unique opportunity to study highly excited dense nuclear matter in the laboratory. We present measurements of identified charged hadron production at ...different rapidities from Au+Au and p+p collisions at 200 GeV. Coulomb effects on pion spectra in relativistic nuclear collisions at RHIC energies will be investigated. The nuclear modification factors for identified particles show distinct meson/baryon dependence. At high pT the charged pion yields are suppressed by a factor of ~5, while the baryon production is enhanced in Au+Au collisions, when compared to the binary scaled p+p data from the same energy.
A comparative theoretical study of the damages produced by protons and pions, in the energy range 50MeV–50GeV, in diamond, is presented. The concentration of primary defects (CPD) induced by hadron ...irradiation is used to describe material degradation. The CPD has very different behaviours for protons and pions: the proton degradation is important at low energies and is higher than the pion one in the whole energy range investigated, with the exception of the Δ33 resonance region, where a large maximum of the degradation exists for pions. In comparison with silicon, the most investigated and the most utilised semiconductor material for detectors, diamond theoretically proves to be one order of magnitude more resistant both to proton and pion irradiation.
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