Pentaquark Search at HERMES
High Energy Physics - Experiment
2019-08-14 v1
Abstract
Evidence for a narrow baryon state at 1528 +- 2.6(stat) +- 2.1(syst) MeV is presented in quasi-real photoproduction on a deuterium target through the decay channel p,K0 to p,pi+,pi-. The statistical significance of the peak in the p,K0 invariant mass spectrum is 4 standard deviations and its extracted intrinsic width Gamma = 17 +- 9(stat) +- 3(syst) MeV. This state may be interpreted as the predicted S=+1 exotic Theta+ (uudd\bar{s}) pentaquark baryon.
Keywords
Cite
@article{arxiv.hep-ex/0411027,
title = {Pentaquark Search at HERMES},
author = {Wolfgang Lorenzon},
journal= {arXiv preprint arXiv:hep-ex/0411027},
year = {2019}
}
Comments
9 pages, 6 figures, International Workshop PENTAQUARK04, SPring-8, Japan, July 2004