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Cross sections and some features of charm photoproduction at γ energies of 20-70 GeV

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	Adamovich, M. I.; Bolta Alandete, José Miguel; Castillo Giménez, María Victoria Perfil; Higón Rodríguez, Emilio Perfil; Salt Cairols, José Perfil; Sanchis Lozano, Miguel Ángel; Bravo Sánchez, Laura; Niembro Bárcena, Ramón; Ruiz Jimeno, Alberto; Villar García, Eugenio
	This document is a artículoDate1987
	Este documento está disponible también en : http://hdl.handle.net/10550/43904
	We report some results on charm photoproduction at γ energies ranging from 20 to 70 GeV. 36 events with pairs of charmed particles have been found in emulsions. The computed total cross section is (230±57)nb/nucleon. Frequencies of different production channels and some distributions are presented and compared with the predictions from a photon-gluon fusion model with string fragmentation.
	Adamovich, M. I. Bolta Alandete, José Miguel Castillo Giménez, María Victoria Higón Rodríguez, Emilio Salt Cairols, José Sanchis Lozano, Miguel Ángel Bravo Sánchez, Laura Niembro Bárcena, Ramón Ruiz Jimeno, Alberto Villar García, Eugenio 1987 Cross sections and some features of charm photoproduction at γ energies of 20-70 GeV Physics Letters B 187 3-4 437 441
	http://dx.doi.org/10.1016/0370-2693(87)91125-7