Hadronic-loop induced mass shifts in scalar heavy-light mesons

Details Hadronic-loop induced mass shifts in scalar heavy-light mesons Hadronic-loop induced mass shifts in scalar heavy-light mesons

2007-12-18

arxiv.org/abs/0712.2953v2

Phys.Lett.B665:157-163,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures. Version accepted for publication in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2008.06.008

We calculate the mass shifts of heavy-light scalar mesons due to hadronic loops under the assumption that these vanish for the groundstate heavy-light mesons. The results show that the masses calculated in quark models can be reduced significantly. We stress that the mass alone is not a signal for a molecular interpretation. Both the resulting mass and the width suggest the observed $D_0^*$ state could be a dressed $c\bar q$ state. We give further predictions for the bottom scalar mesons which can be used to test the dressing mechanism.

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