Observation of a narrow baryonic state in DIS at HERA
High Energy Physics - Experiment
2007-05-23 v1
Abstract
A resonance search has been made in the K^{0}s-p, K^{0}s-pbar and K^{+}p invariant-mass spectra measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb^{-1}. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300--318 GeV for exchanged photon virtuality, Q2, above 1 GeV^{2}. The results support the existence of a narrow state in K^{0}s-p and K^{0}s-pbar decay channels, consistent with the pentaquark prediction. No signal was found in the K^{+}p$ decay channel.
Keywords
Cite
@article{arxiv.hep-ex/0404007,
title = {Observation of a narrow baryonic state in DIS at HERA},
author = {S. V. Chekanov},
journal= {arXiv preprint arXiv:hep-ex/0404007},
year = {2007}
}
Comments
4 pages, 7 eps figures. Presented at the YITP workshop (YITP-W-03-21) "Multi-quark hadrons; four, five and more?", (February 17-19, 2004), Kyoto, Japan