S. Chaisanguanthum

Observation of Y(3940)-> J/psi omega in B -> J/psi omega K at BABAR RID C-5223-2009 RID D-1055-2009

Fry, Azzolini, Sordini, 2008 .

Observation of Y(3940) $\to J/\psi \omega$ in $B \to J/\psi \omega K$ at BABAR

X. Chen, D. Leith, R. Field, 2007, 0711.2047.