18,153 research outputs found
Nuclear Effects in Generators: the Path Forward
The extraction of neutrino oscillation parameters requires the determination
of the neutrino energy from observations of the hadronic final state. The use
of nuclear targets then requires the use of event generators to isolate the
interesting elementary processes and to take experimental acceptances into
account. In this talk I briefly summarize the history of event generators and
their use in nuclear physics, talk briefly about the generators used in the
neutrino community and then discuss future necessary developments.Comment: Talk at NuInt11, Dehradun, India, March 201
Hadrons in Nuclei
Changes of hadronic properties in dense nuclear matter as predicted by theory
have usually been investigated by means of relativistic heavy-ion reactions. In
this talk I show that observable consequences of such changes can also be seen
in more elementary reactions on nuclei. Particular emphasis is put on a
discussion of photonuclear reactions; examples are the dilepton production at
GeV and the hadron production in nuclei at 10 - 20 GeV photon
energies. The observable effects are expected to be as large as in relativistic
heavy-ion collisions and can be more directly related to the underlying
hadronic changes.Comment: Invited talk at HADRON'03, Aschaffenburg, Germany, Aug. 31 - Sept. 6,
200
Neutrino-Nucleus Interactions at the LBNF Near Detector
The reaction mechanisms for neutrino interactions with an nucleus
with the LBNF flux are calculated with the Giessen-Boltzmann-Uehling-Uhlenbeck
(GiBUU) transport-theoretical implementation of these interactions.
Quasielastic scattering, many-body effects, pion production and absorption and
Deep Inelastic Scattering are discussed; they all play a role at the LBNF
energies and are experimentally entangled with each other. Quasielastic
scattering makes up for only about 1/3 of the total cross section whereas pion
production channels make up about 2/3 of the total. This underlines the need
for a consistent description of the neutrino-nucleus reaction that treats all
channels on an equal, consistent footing. The results discussed here can also
serve as useful guideposts for the Intermediate Neutrino Program.Comment: Proc. of the CETUP* Workshop 2014, Caption of Fig. 5 made more
specifi
Dilepton Production in Elementary Processes on the Nucleon
We study elementary processes for production of dileptons from nucleons,
either through NN bremsstrahlung or through photon-induced reactions. We
emphasize the dependence of the expected cross-sections on the electromagnetic
formfactor of the nucleon in the time-like regime and point out that the
mentioned reactions can provide important information on the validity of vector
meson dominance for the nucleon. We also study the off-shell dependence of the
formfactors.Comment: Figures available from author by fa
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