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Reanalysis of the e(+)e(-) -> (D*(D*)over-bar)(+/-)pi(-/+) reaction and the claim for the Z(c)(4025) resonance

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Reanalysis of the e(+)e(-) -> (D*(D*)over-bar)(+/-)pi(-/+) reaction and the claim for the Z(c)(4025) resonance

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dc.contributor.author Martínez Torres, Alberto
dc.contributor.author Khemchandani, K. P.
dc.contributor.author Navarra, F. S.
dc.contributor.author Nielsen, M.
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2016-04-22T09:27:53Z
dc.date.available 2016-04-22T09:27:53Z
dc.date.issued 2014
dc.identifier.citation Martínez Torres, Alberto Khemchandani, K. P. Navarra, F. S. Nielsen, M. Oset Báguena, Eulogio 2014 Reanalysis of the e(+)e(-) -> (D*(D*)over-bar)(+/-)pi(-/+) reaction and the claim for the Z(c)(4025) resonance Physical Review D 89 1 014025 - 1 014025 - 9
dc.identifier.uri http://hdl.handle.net/10550/52989
dc.description.abstract In this paper we study the reaction e(+)e(-) -> (D*(D*) over bar (+/-)pi(-/+) in which the BESIII collaboration has claimed the existence of a 1(+) resonance, named Z(c)(4025), in the (D*(D*) over bar invariant mass spectrum with a mass around 4026 MeV and width close to 26 MeV. We determine the (D*(D*) over bar invariant mass distribution and find that although the explanation considered by the BESIII collaboration is plausible, there are others which are equally possible, like a 2(+) resonance or a bound state. Even more, we find that the data can be explained without the existence of a resonance/bound state. In view of the different possible interpretations found for the BESIII data, we try to devise a strategy which could help in identifying the origin of the signal reported by the BESIII collaboration. For this, we study the dependence of the (D*(D*) over bar spectrum considering the different options as a function of the total center-of-mass energy. We arrive at the conclusion that increasing the center-of-mass energy from 4.26 GeV to 4.6 GeV can be useful to distinguish between a resonance, a bound state or just a pure background as being responsible for the signal found. This information should be useful for future experiments.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2014, vol. 89, num. 1, p. 014025 - 1-014025 - 9
dc.subject Física
dc.title Reanalysis of the e(+)e(-) -> (D*(D*)over-bar)(+/-)pi(-/+) reaction and the claim for the Z(c)(4025) resonance
dc.type journal article es_ES
dc.date.updated 2016-04-22T09:27:54Z
dc.identifier.doi 10.1103/PhysRevD.89.014025
dc.identifier.idgrec 098265
dc.rights.accessRights open access es_ES

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