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We systematically study the semileptonic decay process of $ D\rightarrow S,Al\bar{\nu_{l}}(l=e,\mu)$ by light-cone sum rules (LCSR) with chiral currents,calculate the form factors containing only the contribution of the leadingtwist light-cone distribution amplitudes (LCDAs). For scalar mesons$a_{0}(980)$ and $a_{0}(1450)$, we take them as $q\bar{q}$ states. Foraxial-vector meson, we study $a_{1}(1260)( 1^{3}p^{1})$ and $b_{1}(1235)(1^{1}p^{1})$. Based on the results of these form factors, we further presentthe branching ratios of these semileptonic decay processes. The numericalresults for $ D\rightarrow a_{0}(980), b_{1}(1235)l\bar{\nu_{l}} $ are in goodagreement with experiments and that for $ D\rightarrowa_{0}(1450)l\bar{\nu_{l}}$ process are expected to be tested experimentally inthe future.

Study of form factors and branching ratios for $D\rightarrow S,Al\bar{\nu_{l}}$ with light-cone sum rules