2000/09/18 by Akaki Rusetsky, A. Rusetsky, Rusetsky, A.
Earth and Planetary Sciences · Physics and Astronomy · #Cold Fusion and Nuclear Reactions #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0009207
5 pages, Talk at Vth International Workshop "Heavy Quark Physics" (Dubna, 6-8 April 2000)
arxiv created 2000/09/18 · openalex publication_date 2000/09/18 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent progress in the description of the properties of hadronic atoms on the basis of non-relativistic effective Lagrangian approach and Chiral Perturbation Theory (ChPT) is reported. For the case of the pi(+)pi(-) atom decay, the problem is completely solved, both conceptually and numerically. For the pi(-)p atom, a general expression for the ground-state energy is obtained in the first non-leading order in isospin breaking, and the numerical analysis is carried out at O(p2) in ChPT. We briefly consider a possible solution of the "potential model puzzle" in the hadronic atom problem, providing a constructive algorithm for the derivation of the isospin-breaking part of the short-range hadronic potential from field theory.