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Possible molecular states of D*(S)(D)over-bar*(S) system and Y(4140)

Author:
Ding, Gui-Jun  


Journal:
EUROPEAN PHYSICAL JOURNAL C


Issue Date:
2009


Abstract(summary):

The interpretation of Y(4140) as a D*(S)(D) over bar*(S) molecule is studied dynamically in the one boson exchange approach, where sigma, eta and phi exchange are included. Ten allowed D*(S)(D) over bar*(S) states with low spin parity are considered, and we find that the J(PC) = 0(++), 1(+-), 0(-+), 2(++) and 1(--) D*(S)(D) over bar*(S) configurations are most tightly bound. We suggest that the most favorable quantum numbers are J(PC) = 0(++) for Y(4140) as a D*(S)(D) over bar*(S) molecule; however, J(PC) = 0(-+) and 2(++) cannot be excluded. We propose to search for the 1(+-) and 1(--) partners in the J/psi eta and J/psi eta' final states, which is an important test of the molecular hypothesis of Y(4140) and the reasonability of our model. The 0(++) Y molecule should be deeply bound; experimental search in the Gamma(1S)phi channel at Tevatron and LHC is suggested.


Page:
297---308


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