2007/02/28 by Yan-Rui Liu, Shi-Lin Zhu · 20 citations
Physics and Astronomy · #Baryon #Chiral perturbation theory #High-Energy Particle Collisions Research #Meson #Nuclear physics #Nucleon #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #Scattering length #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.1140/epjc/s10052-007-0348-x
published in The European Physical Journal C 52(1), 177-186 (Springer Science+Business Media) · 11 pages, 1 figure, 9 tables
arxiv created 2007/07/23 · openalex publication_date 2007/07/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We calculate decuplet contributions to the s-wave pseudoscalar meson octet-baryon scattering lengths to the third order in heavy baryon chiral perturbation theory (HBχPT). Using experimental pion-nucleon and kaon-nucleon scattering lengths as inputs, we determine low-energy constants and predict other meson-baryon scattering lengths. Numerically we consider three cases: (1) the case with only baryon octet contributions; (2) with decuplet contributions and (3) in the large Nc limit. Hopefully, the analytical expressions and the predictions are helpful to future investigations of the meson-baryon scattering lengths.