Hadronic molecule structure of the Y(3940) and Y(4140)
High Energy Physics - Phenomenology
2009-09-23 v2
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).
Keywords
Cite
@article{arxiv.0903.5424,
title = {Hadronic molecule structure of the Y(3940) and Y(4140)},
author = {Tanja Branz and Thomas Gutsche and Valery E. Lyubovitskij},
journal= {arXiv preprint arXiv:0903.5424},
year = {2009}
}
Comments
4 pages, 2 figures