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Nuclear Interactions of 400 GeV Protons in Emulsion

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Nuclear Interactions of 400 GeV Protons in Emulsion

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dc.contributor.author	Otterlund, I.
dc.contributor.author	Bolta Alandete, José Miguel
dc.contributor.author	Sanchis Lozano, Miguel Ángel
dc.contributor.author	Bravo Sánchez, Laura
dc.contributor.author	Niembro Bárcena, Ramón
dc.contributor.author	Ruiz Jimeno, Alberto
dc.contributor.author	Villar García, Eugenio
dc.date.accessioned	2015-05-21T10:07:14Z
dc.date.available	2015-05-21T10:07:14Z
dc.date.issued	1978
dc.identifier.citation	Otterlund, I. Bolta Alandete, José Miguel Sanchis Lozano, Miguel Ángel Bravo Sánchez, Laura Niembro Bárcena, Ramón Ruiz Jimeno, Alberto Villar García, Eugenio 1978 Nuclear Interactions of 400 GeV Protons in Emulsion Nuclear Physics B 142 4 445 462
dc.identifier.uri	http://hdl.handle.net/10550/43900
dc.description.abstract	We report on 400 GeV proton-emulsion nucleus reactions and compare the results to hadron-nucleus reactions at smaller energies. In particular we present results on the emission of fast target protons (essentially grey track particles) and on their correlation with the number of collisions inside the nucleus, ν, with the number of charged evaporated particles (essentially black track particles) and with the number of pions produced (essentially shower particles). We observe that the main features of the 200¿400 GeV data are very similar. However, we find that the mean shower-particle multiplicity at 400 GeV is essentially higher than expected from the simple independent particle model prediction 〈ns〉 = 〈nch〉[1 + 0.5(〈ν〉 − 1)]. The shower particle multiplicities do not seem to follow a target mass dependence of the form 〈ns〉 = 〈nch〉 Aα with α = 0.14 or α = 0.19 as has been suggested in the literature. The pseudo-rapidity distribution shows limiting target and projectile fragmentation. The shower-particle multiplicity in the ¿central region¿ increases linearity with 〈ν〉 but faster than 0.5〈ν〉 times the corresponding multiplicity in pp reactions.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 1978, vol. 142, num. 4, p. 445-462
dc.subject	Física
dc.title	Nuclear Interactions of 400 GeV Protons in Emulsion
dc.type	journal article	es_ES
dc.date.updated	2015-05-21T10:07:14Z
dc.identifier.doi	10.1016/0550-3213(78)90223-7
dc.identifier.idgrec	091209
dc.rights.accessRights	open access	es_ES