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Energy dependence of event shapes and of alpha(s) at LEP 2

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Energy dependence of event shapes and of alpha(s) at LEP 2

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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	2014-03-29T13:00:27Z
dc.date.available	2014-03-29T13:00:27Z
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 Energy dependence of event shapes and of alpha(s) at LEP 2 Physics Letters B 456 2-4 322 340
dc.identifier.uri	http://hdl.handle.net/10550/33809
dc.description.abstract	Infrared and collinear safe event shape distributions and their mean values are determined using the data taken at five different centre of mass energies above MZ with the DELPHI detector at LEP. From the event shapes, the strong coupling αs is extracted in ≀(αs2), NLLA and a combined scheme using hadronisation corrections evaluated with fragmentation model generators as well as using an analytical power ansatz. Comparing these measurements to those obtained at MZ, the energy dependence (running) of αs is accessible. The logarithmic energy slope of the inverse strong coupling is measured to bein good agreement with the QCD expectation of 1.27.
dc.relation.ispartof	Physics Letters B, 1999, vol. 456, num. 2-4, p. 322-340
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Energy dependence of event shapes and of alpha(s) at LEP 2
dc.type	journal article	es_ES
dc.date.updated	2014-03-29T13:00:27Z
dc.identifier.doi	10.1016/S0370-2693(99)00472-4
dc.identifier.idgrec	006671
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1016/S0370-2693(99)00472-4