@Article{Albaladejo_etal2017,
author="Albaladejo, M.
and Fernandez-Soler, P.
and Guo, F. K.
and Nieves, J.",
title="Two-pole structure of the D-0*(2400)",
journal="Physics Letters B",
year="2017",
publisher="Elsevier Science Bv",
volume="767",
pages="465--469",
abstract="The so far only known charmed non-strange scalar meson is dubbed as D-0(*)(2400) in the Review of Particle Physics. We show, within the framework of unitarized chiral perturbation theory, that there are in fact two (I = 1/2, J(P) = 0(+)) poles in the region of the D-0(*)( 2400) in the coupled-channel D pi, D eta and D-s (K) over bar scattering amplitudes. With all the parameters previously fixed, we predict the energy levels for the coupled-channel system in a finite volume, and find that they agree remarkably well with recent lattice QCD calculations. This successful description of the lattice data is regarded as a strong evidence for the two-pole structure of the D-0(*)( 2400). With the physical quark masses, the poles are located at (2105(-8)(+6) -- i102(-12)(+10)) MeV and (2451(-26)(+36) -- i134(-8)(+7)) MeV, with the largest couplings to the D pi and D-s (K) over bar channels, respectively. Since the higher pole is close to the D-s (K) over bar threshold, we expect it to show up as a threshold enhancement in the D-s (K) over bar invariant mass distribution. This could be checked by high-statistic data in future experiments. We also show that the lower pole belongs to the same SU(3) multiplet as the D-s0(*)(2317) state. Predictions for partners in the bottom sector are also given.",
optnote="WOS:000397861700070",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3025), last updated on Tue, 12 Dec 2017 16:01:18 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2017.02.036",
opturl="http://arxiv.org/abs/1610.06727",
opturl="https://doi.org/10.1016/j.physletb.2017.02.036",
archivePrefix="arXiv",
eprint="1610.06727",
language="English"
}