386 research outputs found
Mathematical modeling with digital technological tools for interpretation of contextual situations
This article has the goal of proposing physical contextual situations modeling as a way
to interpret mathematical representations that are produced by digital technological tools. Thus,
there is an experimental situation-problem about a physical phenomenon that is modeled through
video analysis and dynamic geometry software; the methodological model Cuvima conducts the
experimental activity. Pre-testing and post-testing measuring instruments were designed to
obtain the information and previous conceptions of ten graduate students in Mathematical
Education, which showed a conceptual change. Similarly, results prove that digital technology,
from a didactical sequence, supports and strengthens experimental work simplifying modeling
processes of a physical phenomenon, promoting the use of mathematical representations to solve
a situation-problem
Rare Kaon Decay to Missing Energy: Implications of the NA62 Result for a Model
Meson decays offer a good opportunity to probe new physics. The rare kaon
decay is one of the cleanest of them and,
for this reason, is rather sensitive to new physics, in particular, vector
mediators. NA62 collaboration, running a fixed-target experiment at CERN,
recently reported an unprecedented sensitivity to this decay, namely a
branching fraction of at 68\% C.L. Vector mediators that couple to
neutrinos may yield a sizeable contribution to this decay. Motivated by the new
measurement, we interpret this result in the context of a concrete
model, and put our findings into perspective with the correlated decay measured by KOTO collaboration, current,
and future colliders, namely the High-Luminosity and High-Energy LHC
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