Triply Heavy Baryons and Heavy Quark Spin Symmetry

Details Triply Heavy Baryons and Heavy Quark Spin Symmetry Triply Heavy Baryons and Heavy Quark Spin Symmetry

2011-10-13

arxiv.org/abs/1110.2962v2

Physical Review D 85, 014012 (2012)

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 latex pages, 3 figures, 3 tables. Enlarged discussion. New references added

Scientific paper

10.1103/PhysRevD.85.014012

We study the semileptonic $b\to c$ decays of the lowest-lying triply-heavy baryons made from $b$ and $c$ quarks in the limit $m_b, m_c \gg \Lambda_\mathrm{QCD}$ and close to the zero recoil point. The separate heavy quark spin symmetries strongly constrain the matrix elements, leading to single form factors for $ccb\to ccc$, $bbc\to ccb$, and $bbb\to bbc$ baryon decays. We also study the effects on these systems of using a $Y$-shaped confinement potential, as suggested by lattice QCD results for the interaction between three static quarks.

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