Subthreshold poles in electron-positron annihilation. $\rm D_s^+\rm D_s^-$ final state
Subthreshold poles in electron-positron annihilation. $\rm D_s^+\rm D_s^-$ final state
We present the evidence of a subthreshold pole in the $e^+ e^-\rightarrow \rm D_s^+\rm D_s^-$ process, which can be interpreted as an excited (2p) state of the $\rm D_s^+\rm D_s^-$ molecule with a binding energy of (28.1$^{+12.1}_{-9.3}$)~MeV.
Peter Lichard、Josef Juráň
物理学
Peter Lichard,Josef Juráň.Subthreshold poles in electron-positron annihilation. $\rm D_s^+\rm D_s^-$ final state[EB/OL].(2025-07-07)[2025-07-21].https://arxiv.org/abs/2507.05181.点此复制
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