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Heavy-antiquark-diquark symmetry and heavy hadron molecules: Are there triply heavy pentaquarks?

AuthorsGuo, F. K.; Hidalgo Duque, Carlos ; Nieves, Juan Miguel ; Pavón Valderrama, Manuel
KeywordsSkyrme model
Issue Date9-Sep-2013
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 88 (5): 054014 - 6 (2013)
AbstractWe explore the consequences of heavy flavor, heavy quark spin, and heavy antiquark-diquark symmetries for hadronic molecules within an effective field theory framework. Owing to heavy antiquark-diquark symmetry, the doubly heavy baryons have approximately the same light-quark structure as the heavy antimesons. As a consequence, the existence of a heavy meson-antimeson molecule implies the possibility of a partner composed of a heavy meson and a doubly heavy baryon. In this regard, the D (D) over bar* molecular nature of the X(3872) will hint at the existence of several baryonic partners with isospin I = 0 and J(P) = 5(-)/2 or 3(-)/2. Moreover, if the Z(b)(10650) turns out to be a B*(B) over bar* bound state, we can be confident of the existence of Xi(bb)*(B) over bar* hadronic molecules with quantum numbers I(J(P)) = 1(1(-)/2) and I(J(P)) = 1(3/2(-)). These states are of special interest since they can be considered to be triply heavy pentaquarks.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.88.054014
Appears in Collections:(IFIC) Artículos
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