dc.contributor.author Alexandrou, C en dc.contributor.author Drach, V en dc.contributor.author Jansen, K en dc.contributor.author Kallidonis, C en dc.contributor.author Koutsou, G en dc.date.accessioned 2018-03-08T08:49:32Z dc.date.available 2018-03-08T08:49:32Z dc.date.issued 2014-06-17 en dc.identifier.uri http://hdl.handle.net/10026.1/11016 dc.description Version as appeared in Phys. Rev. D 90, 074501 (2014); 35 pages and 27 figures en 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~MeV to 430~MeV. We use the Iwasaki improved gluonic action at three values of the coupling constant corresponding to lattice spacing $a=0.094$~fm, 0.082~fm and 0.065~fm determined from the nucleon mass. We check for both finite volume and cut-off 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) $\chi$PT. 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 $\Xi_{cc}^*$, as well as of the doubly and triply charmed $\Omega$s that have not yet been determined experimentally. en dc.language.iso en en dc.subject hep-lat en dc.subject hep-lat en dc.subject hep-ph en dc.subject nucl-th en dc.title Baryon spectrum with $N_f=2+1+1$ twisted mass fermions en dc.type Journal Article plymouth.author-url http://arxiv.org/abs/1406.4310v2 en plymouth.publisher-url http://dx.doi.org/10.1103/PhysRevD.90.074501 en 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.rights.embargoperiod Not known en rioxxterms.licenseref.uri http://www.rioxx.net/licenses/all-rights-reserved en rioxxterms.type Journal Article/Review en
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