Speaker
Prof.
Sheldon Stone
(Syracuse, LHCb)
Description
We consider the relative decay rates of B0 and Bs mesons into a J/psi plus a light scalar meson either the f0(500) (\sigma) or the f0(980). We show that it is possible to distinguish between the quark content of the scalars being quark-antiquark or tetraquark by measuring specific ratios of decay rates. Using current data we determine the ratio of form-factors in $Bs -> J/psi f0(980) with respect to Bz -> J/psi f_0(500) decays to be 0.99^{+0.13}_{-0.04} at a four-momentum transfer squared equal to the mass of the J/psi meson squared. In the case where these light mesons are considered to be quark-antiquark states, we give a determination of the mixing angle between strange and light quark states of less than 29 degrees at 90% confidence level. We also discuss the use of a similar ratio to investigate the structure of other isospin singlet states.
| APS member ID | ST693216 |
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Author
Prof.
Sheldon Stone
(Syracuse, LHCb)
Co-author
Dr
Liming Zhang
(Syracuse University)
