N. Coppola
Published 2006-05-15Version 1
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.
Comments: Proceedings of the 41st Rencontres de Moriond - QCD and high energy hadronic interactions - La Thuile 18 - 25 march 2006 4 pages, 3 figures
Measurement of the Associated $γ+ μ^\pm$ Production Cross Section in $p \bar p$ Collisions at $\sqrt{s} = 1.8$ TeV
Measurements of Charm Fragmentation into $D_s^{*+}$ and $D_s^+$ in $e^+e^-$ Annihilations at $\sqrt{s}$=10.5 GeV
Measurement of the Production Cross Section for Pairs of Isolated Photons in pp collisions at sqrt(s) = 7 TeV
