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Spin, parity, and nature of the Xi(1620) resonance

Repositori DSpace/Manakin

dc.contributor.author	Ramos Gómez, Àngels
dc.contributor.author	Oset Báguena, Eulogio
dc.contributor.author	Bennhold, Cornelius
dc.date.accessioned	2015-09-08T10:12:34Z
dc.date.available	2015-09-08T10:12:34Z
dc.date.issued	2002
dc.identifier.citation	Ramos Gómez, Àngels Oset Báguena, Eulogio Bennhold, Cornelius 2002 Spin, parity, and nature of the Xi(1620) resonance Physical Review Letters 89 25 252001
dc.identifier.uri	http://hdl.handle.net/10550/46966
dc.description.abstract	Using a unitary extension of chiral perturbation theory with a lowest-order s-wave SU(3) chiral Lagrangian we study low-energy meson-baryon scattering in the strangeness S=-2 sector. A scattering-matrix pole is found around 1605 MeV which corresponds to an s-wave Xi resonance with J(P)=1/2(-). We identify this resonance with the Xi(1620) state, quoted by the Particle Data Group with I=1/2 but with unknown spin and parity. The addition of the S=-2 state to the recently computed Lambda(1670), Sigma(1620), and N(1535) states completes the octet of J(P)=1/2(-) resonances dynamically generated in this chiral unitary approach.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2002, vol. 89, num. 25, p. 252001
dc.subject	Física
dc.title	Spin, parity, and nature of the Xi(1620) resonance
dc.type	journal article	es_ES
dc.date.updated	2015-09-08T10:12:34Z
dc.identifier.doi	10.1103/PhysRevLett.89.252001
dc.identifier.idgrec	036308
dc.rights.accessRights	open access	es_ES