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dc.contributor.author | Martín Cámalich, Jorge | - |
dc.contributor.author | Geng, Li Sheng | - |
dc.contributor.author | Vicente Vacas, Manuel J. | - |
dc.date.accessioned | 2010-11-16T13:05:11Z | - |
dc.date.available | 2010-11-16T13:05:11Z | - |
dc.date.issued | 2010-10-19 | - |
dc.identifier.citation | Physical Review - Section D - Particles and Fields 82 (7): 074504 (2010) | es_ES |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/10261/29128 | - |
dc.description.abstract | We present an analysis of the baryon-octet and -decuplet masses using covariant SU(3)-flavor chiral perturbation theory up to next-to-leading order. Besides the description of the physical masses we address the problem of the lattice QCD extrapolation. Using the PACS-CS Collaboration data we show that a good description of the lattice points can be achieved at next-to-leading order with the covariant loop amplitudes and phenomenologically determined values for the meson-baryon couplings. Moreover, the extrapolation to the physical point up to this order is found to be better than the linear one given at leading-order by the Gell-Mann-Okubo approach. The importance that a reliable combination of lattice QCD and chiral perturbation theory may have for hadron phenomenology is emphasized with the prediction of the pion-baryon and strange-baryon sigma terms. | es_ES |
dc.description.sponsorship | We want to thank L. Alvarez-Ruso, J.A. Oller and S. Scherer for independently motivating the present study. Discussions with J. Nieves and R.D. Young are acknowledged. This work was partially supported by the MEC contract FIS2006-03438 and the EU Integrated Infrastructure Initiative Hadron Physics Project contract RII3-CT-2004-506078. JMC acknowledges the MICINN for support. LSG’s work was partially supported by the Fundamental Research Funds for the Central Universities, the Alexander von Humboldt foundation, and the MICINN in the program Juan de la Cierva. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Physical Society | es_ES |
dc.rights | openAccess | es_ES |
dc.title | Lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1103/PhysRevD.82.074504 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1103/PhysRevD.82.074504 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
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lowest lying baryon.pdf | 147,55 kB | Adobe PDF | Visualizar/Abrir |
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