Studies of exotic hadrons by high-energy exclusive reactions
Abstract
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 -> K^0 + Lambda(1405) in comparison with the one for the ground-state Lambda production pi^- + p -> K^0 + Lambda. The counting rule indicates that the cross section scales as s^8 dsigma /dt=constant if Lambda(1405) is an ordinary three-quark baryon, whereas it is s^{10} 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.
Keywords
Cite
@article{arxiv.1312.1749,
title = {Studies of exotic hadrons by high-energy exclusive reactions},
author = {H. Kawamura and S. Kumano and T. Sekihara},
journal= {arXiv preprint arXiv:1312.1749},
year = {2013}
}
Comments
4 pages, 7 figures, 12th Asia Pacific Physics Conference (APPC12), JPS Conference Proceedings in press