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arXiv · 0903.5424

Hadronic molecule structure of the Y(3940) and Y(4140)

Tanja Branz·Thomas Gutsche·Valery E. Lyubovitskij
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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).

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Tanja Branz, Thomas Gutsche, Valery E. Lyubovitskij. 2009-09-22. Hadronic molecule structure of the Y(3940) and Y(4140). https://doi.org/10.1103/physrevd.80.054019

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