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Kinematic correlations between the charmed D and D mesons produced by a photon beam of mean energy 100 GeV/c have been measured by the NA14/2 experiment at CERN using a sample of almost background-free fully reconstructed DD events. The observed D and DD distributions are compared to the predictions of production models using dierent parameters for the charm fragmentation function and for the intrinsic transverse momentum of the partons.

Abstract:The cosmic ray emulsion chamber community has reported several unusual phenomena which are also relevant to experiments at the current high-energy accelerators, in particular the Fermilab Tevatron Collider and the CERN Large Hadron Collider (LHC). A summary of the "Cosmic Rays at Mountain Altitude" workshop held at Plock (Poland, September 2010) is given.PACS (2008)

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