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The $D_{sJ}^*(2860)$ Mesons as Excited D-wave $c\bar{s}$ States

High Energy Physics - Phenomenology 2015-11-06 v3 High Energy Physics - Experiment Nuclear Experiment Nuclear Theory

Abstract

A new charm-strange meson, the Ds1(2863)D_{s1}^*(2863), has recently been observed by the LHCb collaboration which also determined the DsJ(2860)D_{sJ}^*(2860) to have spin 3. One of the speculations about the previously observed Ds1(2710)D_{s1}^*(2710) is that it is the 13D1(csˉ)1^3D_1(c\bar{s}) state. In this paper we reexamine the quark model properties and assignments of these three states in light of these new measurements. We conclude that the Ds1(2863)D_{s1}^*(2863) and Ds3(2863)D_{s3}^*(2863) are the 13D1(csˉ)1^3D_1 (c\bar{s}) and 13D3(csˉ)1^3D_3 (c\bar{s}) states respectively and the Ds1(2710)D_{s1}^*(2710) is the 23S1(csˉ)2^3S_1(c\bar{s}) state. In addition to these three states there are another three excited DsD_s states in this mass region still to be found; the 21S02^1S_0 and two 1D21D_2 states. We calculate the properties of these states and expect that LHCb has the capability of observing these states in the near future.

Keywords

Cite

@article{arxiv.1409.0874,
  title  = {The $D_{sJ}^*(2860)$ Mesons as Excited D-wave $c\bar{s}$ States},
  author = {Stephen Godfrey and Kenneth Moats},
  journal= {arXiv preprint arXiv:1409.0874},
  year   = {2015}
}

Comments

Modified to reflect erratum to the paper. Does not change the paper's conclusions. We found a phase error in the strong decay amplitude which affected the D_2 and D_2' partial widths due to triplet-single mixing of the components. The table has been corrected and the 2nd and 3rd last lines of the discussion section were modified to reflect this change