Heavy Baryon Spectroscopy
نویسندگان
چکیده
منابع مشابه
Heavy baryon spectroscopy from the lattice.
The results of an exploratory lattice study of heavy baryon spectroscopy are presented. We have computed the full spectrum of the eight baryons containing a single heavy quark, on a 24348 lattice at b56.2, using an O(a)-improved fermion action. We discuss the lattice baryon operators and give a method for isolating the contributions of the spin doublets (S ,S*), (J8,J*), and (V ,V*) to the corr...
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We investigate the structure of heavy baryons containing a charm or a bottom quark. We employ a constituent quark model successful in the description of the baryon-baryon interaction which is consistent with the light baryon spectra. We solve exactly the three-quark problem by means of the Faddeev method in momentum space. Heavy baryon spectrum shows a manifest compromise between perturbative a...
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Working in the framework of a nonrelativistic quark model we evaluate the spectra and semileptonic decay widths for the ground state of doubly heavy Ξ and Ω baryons. We solve the three-body problem using a variational ansatz made possible by the constraints imposed by heavy quark spin symmetry. In order to check the dependence of our results on the inter-quark interaction we have used five diff...
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QCD describes hadrons as valence quarks in a sea of gluons and q̄q pairs. At distances above ∼ 1 GeV quarks acquire an effective constituent mass due to chiral symmetry breaking. A hadron can then be thought of as a bound state of constituent quarks. In the simplest approximation the hadron mass M is then given by the sum of the masses of its constituent quarks mi, first written down by Sakharov...
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Results are reported for the first calculation of the low-lying spin-1/2 odd-parity octet baryon masses using O(a) improved gluon and fermion actions. Methods for removing even-parity ground-state contaminations from the two-point correlation functions at zero and finite momenta are outlined. We investigate the properties of two odd-parity interpolating fields based on the established interpola...
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ژورنال
عنوان ژورنال: Physics of Particles and Nuclei
سال: 2020
ISSN: 1063-7796,1531-8559
DOI: 10.1134/s1063779620040292