Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-05-15
Physics
High Energy Physics
High Energy Physics - Experiment
Proceedings of the 41st Rencontres de Moriond - QCD and high energy hadronic interactions - La Thuile 18 - 25 march 2006 4 pag
Scientific paper
Recent results on charm fragmentation and hadron spectroscopy in $e^+/e^- p$ collisions at HERA with the ZEUS and H1 detectors are presented. The measured fragmentation ratios and fragmentation fractions are in agreement with those measured in $e^+e^-$, thus supporting the assumption of universality. Measurements of the inclusive photoproduction of the neutral mesons $\eta, \rho^0, f_0(980)$ and $f_2(1270)$ are also presented. At the same time results on production of pentaquarks are shown. Cross sections of observed states and upper limits on the production cross section of unobserved states are extracted in order to enable comparison between experiments.
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