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Exploring the D* rho system within QCD sum rules

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Exploring the D* rho system within QCD sum rules

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dc.contributor.author	Martínez Torres, Alberto
dc.contributor.author	Khemchandani, K. P.
dc.contributor.author	Nielsen, M.
dc.contributor.author	Navarra, F. S.
dc.contributor.author	Oset Báguena, Eulogio
dc.date.accessioned	2014-02-17T13:59:55Z
dc.date.available	2014-02-17T13:59:55Z
dc.date.issued	2013
dc.identifier.citation	Martínez Torres, A. Khemchandani, K.P. Nielsen, M. Navarra, F.S. Oset Báguena, Eulogio 2013 Exploring the D* rho system within QCD sum rules Physical Review D 88 7 074033
dc.identifier.uri	http://hdl.handle.net/10550/33001
dc.description.abstract	We present a study of the D* rho system made by using the method of QCD sum rules to determine the mass of possible resonances generated in the same system. Using isospin and spin projectors, we investigate the different configurations and obtain evidences for three D* mesons with isospin I = 1/2, spin S = 0, 1, 2 and with masses 2500 +/- 67, 2523 +/- 60, and 2439 +/- 119 MeV, respectively. The last state can be associated with D-2(2460) ( spin 2) listed by the Particle Data Group, while one of the first two might be related to D (2640), with unknown spin parity. In the case of I = 3/2 we also find evidences of three states with spin 0, 1, and 2, respectively, with masses 2467 +/- 82, 2420 +/- 128, and 2550 +/- 56 MeV. The results for the sector I = 1/2 and S 0, 1, 2, are intriguingly similar to a previous study of the D* rho system based on effective field theories, supporting in this way a molecular picture for the resonances D* (2640) and D-2* (2460), while the results for I = 3/2 hint towards the existence of exotic mesons since a multiquark configuration is required to get the quantum numbers of the states found.
dc.relation.ispartof	Physical Review D, 2013, vol. 88, num. 7, p. 074033
dc.subject	Física
dc.title	Exploring the D* rho system within QCD sum rules
dc.type	journal article	es_ES
dc.date.updated	2014-02-17T13:59:55Z
dc.identifier.doi	10.1103/PhysRevD.88.074033
dc.identifier.idgrec	093166
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1103/PhysRevD.88.074033