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The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of CA/CF

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The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of CA/CF

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Alemany Fernández, Reyes
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cortina Gil, Eduardo
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	García García, Carmen
dc.contributor.author	Gil Botella, Inés
dc.contributor.author	Hernández Rey, Juan José
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Navas Concha, Sergio
dc.contributor.author	Salt Cairols, José
dc.date.accessioned	2014-03-31T09:05:06Z
dc.date.available	2014-03-31T09:05:06Z
dc.date.issued	1999
dc.identifier.citation	DELPHI Collaboration Alemany, R. Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Gil, I. Hernández Rey, Juan José Higón Rodríguez, Emilio Martínez Vidal, Fernando Navas, S. Salt Cairols, José 1999 The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of CA/CF Physics Letters B 449 383 400
dc.identifier.uri	http://hdl.handle.net/10550/33825
dc.description.abstract	Data collected at the Z resonance using the DELPHI detector at LEP are used to determine the charged hadron multiplicity in gluon and quark jets as a function of a transverse momentum-like scale. The colour factor ratio, \cacf, is directly observed in the increase of multiplicities with that scale. The smaller than expected multiplicity ratio in gluon to quark jets is understood by differences in the hadronization of the leading quark or gluon. From the dependence of the charged hadron multiplicity on the opening angle in symmetric three-jet events the colour factor ratio is measured to be: C_A/C_F = 2.246 \pm 0.062 (stat.) \pm 0.080 (syst.) \pm 0.095 (theo.)
dc.relation.ispartof	Physics Letters B, 1999, vol. 449, p. 383-400
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of CA/CF
dc.type	journal article	es_ES
dc.date.updated	2014-03-31T09:05:06Z
dc.identifier.doi	10.1016/10.1016/S0370-2693(99)00112-4
dc.identifier.idgrec	006664
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1016/S0370-2693(99)00112-4