Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2004-04-07
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 7 eps figures. Presented at the YITP workshop (YITP-W-03-21) "Multi-quark hadrons; four, five and more?", (February 1
Scientific paper
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.
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