Newly observed D_{sJ}(3040) and the radial excitations of P-wave charmed-strange mesons

Abstract

Inspired by the newly observed $D_{sJ}(3040{)}^{+}$ state, in this work we systemically study the two-body strong decays of P-wave charmed-strange mesons with the first radial excitation. Under the assignment of $1^{+}(j^P=1/2^{+})$, i.e. the first radial excitation of $D_{s1}(2460{)}^{+}$, we find that the width of $D_{sJ}(3040{)}^{+}$ is close to the lower limit of the BaBar measurement. This indicates that it is reasonable to interpret $D_{sJ}(3040{)}^{+}$ as the first radial excitation of $D_{s1}(2460{)}^{+}$. Our calculation further predicts that $0^{-}+1^{-}$ channels e.g. $D^{+}{K}^{\ast 0}$, $D^0{K}^{\ast +}$ and $D_s^{+}\varphi$ are important for the search for $D_{sJ}(3040{)}^{+}$. To help future experiments finding the remaining three P-wave charmed-strange mesons with the first radial excitation, we present the predictions for the strong decays of these three P-wave charmed-strange mesons.

Comments: 13 pages, 7 figures. More discussion added and typos corrected. Accepted by Phys. Rev. D