  The masses of the strange mesons ($K$, $K^*$ and $\phi$) are investigated in
the presence of strong magnetic fields. The changes in the masses of these
mesons arise from the mixing of the pseusdoscalar and vector mesons in the
presence of a magnetic field. For the charged mesons, these mass modifications
are in addition to the contributions from the lowest Landau energy levels to
their masses. The decay widths, $\phi \rightarrow K\bar K$ and $K^* \rightarrow
K\pi$, in the presence of the magnetic field are studied using a field
theoretic model of composite hadrons with constituent quarks/antiquarks. The
model uses the free Dirac Hamiltonian in terms of the constituent quark fields
as the light quark antiquark pair creation term and explicit constructions for
the meson states in terms of the constituent quarks and anitiquarks to study
the decay processes. The study of the masses and decay widths of the strange
mesons in strong magnetic fields can have observable consequences on the
production of the open and hidden strange mesons in the peripheral ultra high
energy collisions at LHC, where the created magnetic field can be huge.
