Suppressed decay into open charm for the Y(4260) being an hybrid
(2005) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 631, n° 4, p. 164-169 (2005)
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- (en) We investigate the Y(4260) resonance recently discovered by the Babar collaboration. We propose the observation of its decay into J/psi pi pi and its non observation into open charm as a consequence of it being a charmonium hybrid state with a magnetic constituent gluon. We prove a selection rule forbidding its decay into two S-wave charmed mesons in any potential model. We suggest a generalisation of the selection rule based only on the heavy quark nature of the charm. Comment: 5 pages
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Kou, E., & Pene, O. (2005). Suppressed decay into open charm for the Y(4260) being an hybrid. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 631(4), 164-169. https://doi.org/10.1016/j.physletb.2005.09.013 (Original work published 2005)