Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons

Details Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons

2010-08-18

arxiv.org/abs/1008.3120v4

Phys.Rev.D82:111501,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures, 2 tables, Accepted by Rapid Communications of Phys. Rev. D

Scientific paper

10.1103/PhysRevD.82.111501

We study three newly observed D(2550), D(2610), and D(2760) by the BaBar Collaboration utilizing the mass spectra and investigating the strong decays. Our calculation indicates that D(2610) is an admixture of $2^3S_1$ and $1^3D_1$ with $J^P=1^-$. $D(2760)$ can be explained as either the orthogonal partner of D(2610) or $1^3D_3$. Our estimate of the decay width for $D(2550)$, assuming it as $2^1S_0$, is far below the experimental value. the threshold effect because the strong decay of $D(2550)\to D_0^*\pi$ is forbidden.} The decay behavior of the remaining two 1D charmed mesons, i.e., $^3D_2$ and $^1D_2$ ($J^P=2^-$) states, is predicted, which will help future experimental search for these missing $D$-wave charmed mesons.

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