Speaker
Prof.
Nikolay Achasov
(Sobolev Institute of Mathematics)
Description
It is shown that the CLEO data on the $D_s^+\to\pi^+\pi^- e^+\nu_e$ decay directly indicate the absence of the constituent $s\bar s$ pairs in the $f_0(500)$ and $f_0(980)$ mesons.
In addition, it is shown that the BES III data on the $ D^0\to\pi^-\eta e^+\nu_e$ and
$ D^+\to\pi^0\eta e^+\nu_e$ decays directly indicate the absence of the constituent $d\bar u$ and $d\bar d$ pairs in the $a_0^-(980)$ and $a_0^0(980)$ mesons respectively.
It is suggested the experimental program of the investigation $D^+\to\pi^+\pi^- e^+\nu_e$ decay to clear the presence of the constituent $d\bar d$ pairs in the $f_0(500)$ and $f_0(980)$ mesons.
Summary
A similar program is proposed also for the semileptonic B decays.
Primary author
Prof.
Nikolay Achasov
(Sobolev Institute of Mathematics)
Co-authors
Dr
Alexey Kiselev
(Sobolev Institute of Mathematics)
Dr
Georgii Shestakov
(Sobolev Institute of Mathematics)
