English

The Properties of $D^{*}_{s1}(2700)^{+}$

High Energy Physics - Phenomenology 2013-05-22 v1 High Energy Physics - Experiment

Abstract

The new particle Ds1(2700)+D^{*}_{s1}(2700)^{+} has stimulated many attentions. There are different assignments of its inherent properties. It may be a 23S12^3S_1, 13D11^3D_1 or the mixture of 23S113D12^3S_1-1^3D_1 csˉc\bar s 11^- state. By considering its mass, decay modes, full width, production rate, and comparing with current experimental data, we point out that there is another more reasonable assignment: Ds1(2700)+D^{*}_{s1}(2700)^{+} could be identified as two resonances, one of which is a 23S12^3S_1 state, another is a 1D state, and both are csˉc\bar s 11^- states. The two states have very close masses, which are around 2700 MeV, and both have broad decay widths. So in experiments, the overlapping of DKDK or DKD^*K invariant mass distribution coming from their decays is found, but the current experiments could not distinguish these two resonances and reported one particle.

Keywords

Cite

@article{arxiv.1305.4756,
  title  = {The Properties of $D^{*}_{s1}(2700)^{+}$},
  author = {Guo-Li Wang and Yue Jiang and Tianhong Wang and Wan-Li Ju},
  journal= {arXiv preprint arXiv:1305.4756},
  year   = {2013}
}

Comments

12 pages, 3 figures