Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-12-06
Phys.Rev.D75:014013,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 3 figuers, 3 tables. Some descriptions changed, typos corrected. Published version in PRD
Scientific paper
10.1103/PhysRevD.75.014013
We first extract the binding energy $\bar \Lambda$ and decay constants of the D wave heavy meson doublets $(1^{-},2^{-})$ and $(2^{-},3^{-})$ with QCD sum rule in the leading order of heavy quark effective theory. Then we study their pionic $(\pi, K, \eta)$ couplings using the light cone sum rule, from which the parameter $\bar \Lambda$ can also be extracted. We then calculate the pionic decay widths of the strange/non-strange D wave heavy $D/B$ mesons and discuss the possible candidates for the D wave charm-strange mesons. Further experimental information, such as the ratio between $D_s\eta$ and $DK$ modes, will be very useful to distinguish various assignments for $D_{sJ}(2860, 2715)$.
Liu Xiang
Wei Wei
Zhu Shi-Lin
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