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Effective Field Theory Lagrangians for Baryons with Two and Three Heavy Quarks

Nora Brambilla·Thomas Roesch·Antonio Vairo
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Abstract

By analogy with pNRQCD, we construct Effective Field Theories suitable to describe the heavy-quark sector of baryons made of two and three heavy quarks. A long-standing discrepancy between the hyperfine splitting of doubly heavy baryons obtained in the HQET and potential models is solved. The one-loop matching of the 4-quark operators of dimension 6 is provided.

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Nora Brambilla, Thomas Roesch, Antonio Vairo. 2005-07-19. Effective Field Theory Lagrangians for Baryons with Two and Three Heavy Quarks. https://doi.org/10.1103/physrevd.72.034021

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