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dc.contributor.authorAlexandrou, C
dc.contributor.authorDrach, V
dc.contributor.authorJansen, K
dc.contributor.authorKallidonis, C
dc.contributor.authorKoutsou, G
dc.date.accessioned2018-03-08T08:49:32Z
dc.date.available2018-03-08T08:49:32Z
dc.date.issued2014-10-02
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.other074501
dc.identifier.urihttp://hdl.handle.net/10026.1/11016
dc.descriptionVersion as appeared in Phys. Rev. D 90, 074501 (2014); 35 pages and 27 figures
dc.description.abstract

The masses of the low-lying baryons are evaluated using a total of ten ensembles of dynamical twisted mass fermion gauge configurations. The simulations are performed using two degenerate flavors of light quarks, and a strange and a charm quark fixed to approximately their physical values. The light sea quarks correspond to pseudo scalar masses in the range of about 210 to 430 MeV. We use the Iwasaki improved gluonic action at three values of the coupling constant corresponding to lattice spacing a=0.094, 0.082 and 0.065 fm determined from the nucleon mass. We check for both finite volume and cutoff effects on the baryon masses. We examine the issue of isospin symmetry breaking for the octet and decuplet baryons and its dependence on the lattice spacing. We show that in the continuum limit isospin breaking is consistent with zero, as expected. We performed a chiral extrapolation of the forty baryon masses using SU(2) χPT. After taking the continuum limit and extrapolating to the physical pion mass our results are in good agreement with experiment. We provide predictions for the mass of the doubly charmed Ξcc∗, as well as of the doubly and triply charmed Ωs that have not yet been determined experimentally.

dc.format.extent074501-
dc.languageen
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.subjecthep-lat
dc.subjecthep-lat
dc.subjecthep-ph
dc.subjectnucl-th
dc.titleBaryon spectrum with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>N</mml:mi><mml:mi>f</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:math>twisted mass fermions
dc.typejournal-article
dc.typeJournal Article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000342640100004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue7
plymouth.volume90
plymouth.publisher-urlhttp://dx.doi.org/10.1103/PhysRevD.90.074501
plymouth.publication-statusPublished online
plymouth.journalPhysical Review D
dc.identifier.doi10.1103/physrevd.90.074501
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/EXTENDED UoA 10 - Mathematical Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA10 Mathematical Sciences
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.identifier.eissn1550-2368
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1103/physrevd.90.074501
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review


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