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Evidence for a hadronic molecule structure of the Y(3940) and Y(4140) | | Tanja Branz
; Thomas Gutsche
; Valery E. Lyubovitskij
; | | Date: |
31 Mar 2009 | | Abstract: | We report on further evidence that the Y(3940) and the recently observed
Y(4140) are heavy hadron molecule states with quantum numbers J(PC) = 0(++).
The Y(3940) state is considered to be a superposition of D*(+)D*(-) and D*(0)
barD*(0), while the Y(4140) is a bound state of Ds*(+) and Ds*(-) mesons. For
the first time we give predictions for the strong Y(3940) to Jpsi omega,
Y(4140) to Jpsi phi and radiative Y(3940)/Y(4140) to gamma gamma decay widths
in a phenomenological Lagrangian approach. Results for the strong Jpsi V (V =
omega, phi) decays clearly support the molecular interpretation of the Y(3940)
and Y(4140). | | Source: | arXiv, 0903.5424 | | Services: | Forum | Review | PDF | Favorites | |
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