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Observation of the Resonant Character of the Z(4430)(-) State

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Observation of the Resonant Character of the Z(4430)(-) State

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dc.contributor.author	LHCb Collaboration
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Oyanguren Campos, Arantza
dc.contributor.author	Ruiz Valls, Pablo
dc.contributor.author	Sánchez Mayordomo, Carlos
dc.date.accessioned	2016-04-19T12:14:19Z
dc.date.available	2016-04-19T12:14:19Z
dc.date.issued	2014
dc.identifier.citation	LHCb Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Ruiz Valls, Pablo Sánchez Mayordomo, Carlos 2014 Observation of the Resonant Character of the Z(4430)(-) State Physical Review Letters 112 22 222002-1 222002-9
dc.identifier.uri	http://hdl.handle.net/10550/52822
dc.description.abstract	Resonant structures in B-0 -> psi'pi K--(+) decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3 fb(-1) collected with the LHCb detector. The data cannot be described with K+pi(-) resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)(-) -> psi'pi(-) component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)(-) amplitude with the psi'pi(-) mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1(+).
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2014, vol. 112, num. 22, p. 222002-1-222002-9
dc.subject	Física nuclear
dc.title	Observation of the Resonant Character of the Z(4430)(-) State
dc.type	journal article	es_ES
dc.date.updated	2016-04-19T12:14:19Z
dc.identifier.doi	10.1103/PhysRevLett.112.222002
dc.identifier.idgrec	099496
dc.rights.accessRights	open access	es_ES