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Novel Interpretation of the 'Theta(+)(1540) Pentaquark' Peak

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dc.contributor.author	Martínez Torres, Alberto
dc.contributor.author	Oset Báguena, Eulogio
dc.date.accessioned	2015-08-19T10:50:47Z
dc.date.available	2015-08-19T10:50:47Z
dc.date.issued	2010
dc.identifier.citation	Martínez Torres, Alberto Oset Báguena, Eulogio 2010 Novel Interpretation of the 'Theta(+)(1540) Pentaquark' Peak Physical Review Letters 105 9 092001
dc.identifier.uri	http://hdl.handle.net/10550/46673
dc.description.abstract	We use a theoretical model of the gamma d --> K+K- np reaction adapted to the experiment done at LEPS where a peak was observed and associated with the Theta(+)(1540) pentaquark. The study shows that the method used in the experiment to assign momenta to the undetected proton and neutron, together with the chosen cuts, necessarily creates an artificial broad peak in the assumed K(+)n invariant mass in the region of the claimed Theta(+)(1540), such that the remaining strength seen for the experimental peak is compatible with a fluctuation of 2 sigma significance.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2010, vol. 105, num. 9, p. 092001
dc.subject	Física
dc.title	Novel Interpretation of the 'Theta(+)(1540) Pentaquark' Peak
dc.type	journal article	es_ES
dc.date.updated	2015-08-19T10:50:47Z
dc.identifier.doi	10.1103/PhysRevLett.105.092001
dc.identifier.idgrec	061771
dc.rights.accessRights	open access	es_ES