Chiral Lagrangian with Heavy Quark-Diquark Symmetry

Details Chiral Lagrangian with Heavy Quark-Diquark Symmetry Chiral Lagrangian with Heavy Quark-Diquark Symmetry

2005-11-29

arxiv.org/abs/hep-ph/0511321v1

Phys.Rev. D73 (2006) 054003

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, no figures

Scientific paper

10.1103/PhysRevD.73.054003

We construct a chiral Lagrangian for doubly heavy baryons and heavy mesons that is invariant under heavy quark-diquark symmetry at leading order and includes the leading O(1/m_Q) symmetry violating operators. The theory is used to predict the electromagnetic decay width of the J=3/2 member of the ground state doubly heavy baryon doublet. Numerical estimates are provided for doubly charm baryons. We also calculate chiral corrections to doubly heavy baryon masses and strong decay widths of low lying excited doubly heavy baryons.

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