High Energy Physics - Phenomenology
[Submitted on 20 Jun 2021 (v1), last revised 31 Jul 2021 (this version, v2)]
Title:Semileptonic decays $D\toηπe^+ν_e$ in the $a_0(980)$ region
View PDFAbstract:The mechanism of the four-quark production of the light scalar isovector four-quark state $a_0(980)$ in the $D\to\eta\pi e^+\nu_e$ decays is discussed. It is shown that the characteristic features of the shape of the $\eta\pi$ mass spectra expected in our scheme can serve as the indicator of the production mechanism and internal structure of the $a_0(980)$ resonance.
Submission history
From: Georgii Shestakov [view email][v1] Sun, 20 Jun 2021 10:23:33 UTC (603 KB)
[v2] Sat, 31 Jul 2021 04:48:20 UTC (603 KB)
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