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arXiv · 2504.21442

Evidence for the existence of a flavor-sextet charmed meson?

Feng-Kun Guo·Bing-Song Zou
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Abstract

Recently, the LHCb Collaboration reported a signal for a new resonance in the $D_s^+ \pi^\pm$ invariant mass distribution in the decays $B\to \bar{D}^{(*)} D_s^+ \pi^+ \pi^-$ (arXiv:2411.03399). This could be a direct observation of an SU(3) flavor-sextet charmed meson with $J^P=0^+$. Such an SU(3) multiplet, is beyond the conventional quark-antiquark picture, and thus a verification of this observation is important.

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Feng-Kun Guo, Bing-Song Zou. 2025-04-30. Evidence for the existence of a flavor-sextet charmed meson?. https://doi.org/10.1016/j.scib.2025.06.004

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