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Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quarks jets

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Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quarks jets

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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	2014-03-29T12:47:54Z
dc.date.available	2014-03-29T12:47:54Z
dc.date.issued	2000
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 2000 Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quarks jets European Physical Journal C 13 4 573 589
dc.identifier.uri	http://hdl.handle.net/10550/33805
dc.description.abstract	The fragmentation functions of quarks and gluons are measured in various three-jet topologies in Z decays from the full data set collected with the Delphi detector at the Z resonance between 1992 and 1995. The results at different values of transverse momentum-like scales are compared. A parameterization of the quark and gluon fragmentation functions at a fixed reference scale is given. The quark and gluon fragmentation functions show the predicted pattern of scaling violations. The scaling violation for quark jets as a function of a transverse momentum-like scale is in a good agreement with that observed in lower energy e+e− annihilation experiments. For gluon jets it appears to be significantly stronger. The scale dependences of the gluon and quark fragmentation functions agree with the prediction of the DGLAP evolution equations from which the colour factor ratio CA/CF is measured to be: CACF=2.26±0.09stat.±0.06sys.±0.12clus.,scale.
dc.relation.ispartof	European Physical Journal C, 2000, vol. 13, num. 4, p. 573-589
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quarks jets
dc.type	journal article	es_ES
dc.date.updated	2014-03-29T12:47:54Z
dc.identifier.doi	10.1007/s100520050719
dc.identifier.idgrec	006693
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/s100520050719