Effective field theory Lagrangians for baryons with two and three heavy quarks

2005/06/30 by Nora Brambilla, Thomas Roesch, Thomas Rösch +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.72.034021

published as Phys.Rev. D72 (2005) 034021 · 37 pages, 4 figures, revtex4, feynmf.sty; typos corrected, reference added. Accepted for publication in Physical Review D

arxiv created 2005/07/19 · openalex publication_date 2005/08/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

By analogy with potential nonrelativistic QCD, 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 heavy-quark effective theory and potential models is solved. The one-loop matching of the 4-quark operators of dimension 6 is provided.

Citations

• Potential NRQCD: an effective theory for heavy quarkonium
• Two-loop anomalous dimension of the chromo-magnetic moment of a heavy quark
• Infrared behavior of the static potential in perturbative QCD
• Mass spectra of doubly heavy baryons in the relativistic quark model
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)