18,740 research outputs found
Distinguishing between Dirac and Majorana neutrinos with two-particle interferometry
Two-particle interferometry, a second-order interference effect, is explored
as another possible tool to distinguish between massive Dirac and Majorana
neutrinos. A simple theoretical framework is discussed in the context of
several gedanken experiments. The method can in principle provide both the mass
scale and the quantum nature of the neutrino for a certain class of incoherent
left-handed source currents.Comment: 4 pages, 1 table, submitted to PRL; changes to introduction and added
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Asymmetries Between Strange and Antistrange Particle Production in Pion-Proton Interactions
Recent measurements of the asymmetries between Feynman distributions of
strange and antistrange hadrons in interactions show a strong effect
as a function of . We calculate strange hadron production in the context
of the intrinsic model and make predictions for particle/antiparticle
asymmetries in these interactions.Comment: version to be published in Nucl. Phys. A, 46 pages LaTeX, 15 .eps
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Design of teacher assistance tools in an exploratory learning environment for algebraic generalisation
The MiGen project is designing and developing an intelligent exploratory environment to support 11-14 year-old students in their learning of algebraic generalisation. Deployed within the classroom, the system also provides tools to assist teachers in monitoring students' activities and progress. This paper describes the architectural design of these Teacher Assistance tools and gives a detailed description of one such tool, focussing in particular on the research challenges faced, and the technologies and approaches chosen to implement the necessary functionalities given the context of the project
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