2013/12/06 by H. Kawamura, Kawamura, H., S. Kumano +4
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.1312.1749
4 pages, 7 figures, 12th Asia Pacific Physics Conference (APPC12), JPS Conference Proceedings in press
arxiv created 2013/12/06 · openalex publication_date 2013/12/06 · arxiv updated 2013/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the possibility of clarifying internal structure of exotic hadrons by high-energy exclusive reactions. In particular, the constituent-counting rule could be used for determining the internal configuration in large-angle exclusive scattering. As an example, we show the cross section pi- + p -> K0 + Lambda(1405) in comparison with the one for the ground-state Lambda production pi- + p -> K0 + Lambda. The counting rule indicates that the cross section scales as s8 dsigma /dt=constant if Lambda(1405) is an ordinary three-quark baryon, whereas it is s10 dsigma /dt=constant if Lambda(1405) is a five-quark baryon. Here, s and t are Mandelstam variables. Such experiments could be possible at J-PARC, LEP, JLab, CERN-COMPASS, and other high-energy facilities.