Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+
High Energy Physics - Experiment
2014-11-17 v1
Abstract
Cross sections, beam asymmetries, and recoil polarisations for the reactions gamma p to K^+ Lambda ; gamma to K^+ Sigma^0, and gamma p to K^0 Sigma^+ have been measured by the SAPHIR, CLAS, and LEPS collaborations with high statistics and good angular coverage for centre-of-mass energies between 1.6 and 2.3 GeV. The combined analysis of these data with data from pi and eta photoproduction reveals evidence for new baryon resonances in this energy region. A new P_{11} state with mass 1840 MeV and width 140 MeV was observed contributing to most of the fitted reactions. The data demand the presence of two D_{13} states at 1870 and 2170 MeV.
Cite
@article{arxiv.hep-ex/0506011,
title = {Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+},
author = {A. V. Sarantsev and V. A. Nikonov and A. V. Anisovich and E. Klempt and U. Thoma},
journal= {arXiv preprint arXiv:hep-ex/0506011},
year = {2014}
}
Comments
12 pages, 16 figures