Abstract
We present an exploratory study on the radiative transition for the charm-strange meson: [Formula: see text] using [Formula: see text] twisted mass lattice quantum chromodynamics gauge configurations. The form factor for [Formula: see text] meson is also determined. The simulation is performed on lattices with lattice spacings [Formula: see text] fm and lattice size [Formula: see text], and [Formula: see text] fm and lattice size [Formula: see text], respectively. Our numerical results for radiative decay width and the experimental data overlap within the margin of error.
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