  In sharp contrast to its classical counterpart, quantum measurement plays a
fundamental role in quantum mechanics and blurs the essential distinction
between the measurement apparatus and the objects under investigation. An
appealing phenomenon in quantum measurements, termed as quantum Zeno effect,
can be observed in particular subspaces selected by measurement Hamiltonian.
Here we apply the top-down Zeno mechanism to the particle physics. We indeed
develop an alternative insight into the properties of fundamental particles,
but not intend to challenge the Standard Model (SM). In a unified and simple
manner, our effective model allows to merge the origin of neutrino's small mass
and oscillations, the hierarchy pattern for masses of electric charged
fermions, the color confinement, and the discretization of quantum numbers,
using a perturbative theory for the dynamical quantum Zeno effect. Under
various conditions for vanishing transition amplitudes among particle
eigenstates in the effective model, it is remarkable to probe results that are
somewhat reminiscent of SM, including: (i) neutrino oscillations with big-angle
mixing and small masses emerge from the energy-momentum conservation, (ii)
electrically-charged fermions hold masses in a hierarchy pattern due to the
electric-charge conservation, (iii) color confinement and the associated
asymptotic freedom can be deduced from the color-charge conservation. We make
several anticipations about the basic properties for fundamental particles: (i)
the total mass of neutrinos and the existence of a nearly massless neutrino (of
any generation), (ii) the discretization in quantum numbers for the
new-discovered electrically-charged fermions, (iii) the confinement and the
associated asymptotic freedom for any particle containing more than two
conserved charges.
