Puzzles of excited charm meson masses

Details Puzzles of excited charm meson masses Puzzles of excited charm meson masses

2007-06-07

arxiv.org/abs/0706.0942v1

Phys.Lett.B651:124-128,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure, accepted for publication in Physics Letters B

Scientific paper

10.1016/j.physletb.2007.06.013

We attempt a comprehensive analysis of the low lying charm meson states which present several puzzles, including the poor determination of masses of several non-strange excited mesons. We use the well-determined masses of the ground states and the strange first excited states to `predict' the mass of the non-strange first excited state in the framework of heavy hadron chiral perturbation theory, an approach that is complementary to the well-known analysis of Mehen and Springer. This approach points to values for the masses of these states that are smaller than the experimental determinations. We provide a critical assessment of these mass measurements and point out the need for new experimental information.

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