Heavy Baryons in Su(2) × Su(6) Typeset Using Revt E X
نویسنده
چکیده
The spectrum of baryons containing heavy quarks of one flavor is described in terms of representations of the group SU(2) × SU(6), where the two factor groups refer to spin rotations of the heavy quarks and spin-flavor rotations of the light quarks, respectively. This symmetry has a natural interpretation in the heavy quark limit. We exhibit the decomposition of baryon mass operators under this symmetry and compare to experimental results. We discuss the relation of this analysis to that of large-Nc QCD as well as four-flavor SU(8), and indicate the generalization of this work to other properties of heavy baryons.
منابع مشابه
Heavy Baryons and Multiquark Exotics in the Large N C Limit * Typeset Using Revt E X
In the large Nc limit, one can describe normal heavy baryons Qqq and heavy pentaquarks Q̄qqqq as bound states of heavy mesons to chiral (anti)solitons. In this picture, the strong and electromagnetic decay parameters of these hadrons can be calculated from those of the constituent heavy mesons and light baryons, while the weak decay form factors can be evaluated analytically. Typeset using REVTE...
متن کاملExcited Baryons Phenomenology from Large-n C Qcd Typeset Using Revt E X
We present a phenomenological analysis of the strong couplings of the negative-parity L = 1 baryons from the perspective of the large-N c expansion. In the large-N c limit the mass spectrum and mixing pattern of these states are constrained in a very speciic way. The mixing angles are completely determined in this limit, with predictions in good agreement with experiment. In the combined large-...
متن کاملAdjoint \quark" Color Elds in Four-dimensional Lattice Gauge Theory: Vacuum Screening and Penetration Typeset Using Revt E X
The elds generated by \quarks" in the adjoint representation of SU(2) color are analyzed in the scaling region of the four-dimensional lattice theory. Evidence of vacuum screening of adjoint quarks is obtained from a comparison of quark-antiquark (QQ) ux-tubes for quarks in the adjoint (\isospin" j = 1) and fundamental (j = 1=2) representations. The component E j of the colorelectric eld streng...
متن کاملTypeset Using Revt E X 1
The isospin-invariant interacting boson model IBM-3 is analyzed in situations where SUT (3) charge symmetry [or, equivalently, UL(6) sd symmetry] is conserved. Analytic expressions for energies, electromagnetic transitions, two-nucleon transfer probabilities, and boson-number expectation values are obtained for the three possible dynamical symmetry limits, U(5), SU(3), and O(6). Results found i...
متن کاملPhenomenology of New Baryons with Charm and Strangeness Typeset Using Revt E X
The CLEO Collaboration recently has announced the discovery of an excited charmed and strange baryon. We estimate the expected width of this new member of the Ξc family. We discuss the phenomenology of the excited csq and css states, and consider what additional charmed baryons might be observable in the future. We point out that the final state ΞcK could be an interesting new channel to examin...
متن کامل