Static properties and semileptonic decays of doubly heavy baryons in a nonrelativistic quark model

The semileptonic decays of the lowest-lying double-heavy baryons are treated in a quark model. For the Ξbb, hyperfine mixing in the spin wave function leaves the total rate for decay into the lowest lying daughter baryons essentially unchanged, but changes the relative rates into the Ξbc and [Formula: see text]. The same pattern is obtained in the decays of the Ωbb. For the Ξbc, this mixing leads to factor of about 17 suppression in the decay rate to the [Formula: see text] when wave functions truncated to the largest components are used, but the total semileptonic decay rate of the parent baryon remains essentially unchanged. For the Ωbc, the decay to the [Formula: see text] is suppressed by a factor of more than 25 from the unmixed case. When the full wave functions are used, the large suppression of the decays to the [Formula: see text] and [Formula: see text] persists.

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Masses and Decays of Charmed and Bottom Baryons

Modern Physics Letters A ◽

10.1142/s0217732397001825 ◽

1997 ◽

Vol 12 (24) ◽

pp. 1791-1802 ◽

Cited By ~ 7

Author(s):

Fayyazuddin ◽

Riazuddin

Keyword(s):

Experimental Data ◽

Quark Model ◽

Hadronic Decays ◽

Present Experimental Data ◽

Heavy Baryons ◽

Nonrelativistic Quark Model ◽

Decay Widths ◽

The Masses

Using SU(3) and the nonrelativistic quark model, the masses and the strong hadronic decays of heavy baryons are discussed. A number of results for the decay widths are obtained using the present experimental data as input.

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HEAVY DIQUARK SYMMETRY CONSTRAINTS FOR STRONG DECAYS

International Journal of Modern Physics A ◽

10.1142/s0217751x12501539 ◽

2012 ◽

Vol 27 (27) ◽

pp. 1250153 ◽

Cited By ~ 5

Author(s):

B. EAKINS ◽

W. ROBERTS

Keyword(s):

Heavy Quark ◽

Quark Model ◽

Strange Quark ◽

Mass Spectra ◽

Heavy Baryons ◽

Nonrelativistic Quark Model ◽

Decay Widths ◽

Symmetry Constraints

The heavy diquark symmetry (HDS) of doubly heavy baryons (DHBs) provides new insights into the spectroscopy of these hadrons. We derive the consequences of this symmetry for the mass spectra and the decay widths of DHBs. We compare these symmetry constraints to results from a nonrelativistic quark model for the mass spectra and results from the 3P0 model for strong decays. The quark model we implement was not constructed with these symmetries and contains interactions which explicitly break HDS. Nevertheless these symmetries emerge. We argue that the 3P0 model and any other model for strong transitions which employs a spectator assumption explicitly respects HDS. We also explore the possibility of treating the strange quark as a heavy quark and apply these ideas to Ξ, Ξc and Ξb baryons.

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Erratum: Semileptonic decays of doubly heavy baryons in the relativistic quark model [Phys. Rev. D70, 014018 (2004)]

Physical Review D ◽

10.1103/physrevd.77.079903 ◽

2008 ◽

Vol 77 (7) ◽

Cited By ~ 16

Author(s):

D. Ebert ◽

R. N. Faustov ◽

V. O. Galkin ◽

A. P. Martynenko

Keyword(s):

Quark Model ◽

Semileptonic Decays ◽

Relativistic Quark Model ◽

Heavy Baryons

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Semileptonic Decays of Heavy Baryons in the Relativistic Quark Model

Particles ◽

10.3390/particles3010017 ◽

2020 ◽

Vol 3 (1) ◽

pp. 208-222

Author(s):

Rudolf N. Faustov ◽

Vladimir O. Galkin

Keyword(s):

Quark Model ◽

Form Factors ◽

Relativistic Effects ◽

Semileptonic Decays ◽

Branching Ratios ◽

Relativistic Quark Model ◽

Matrix Elements ◽

Quasipotential Approach ◽

Heavy Baryons ◽

The Matrix

Semileptonic and rare semileptonic decays of heavy baryons are studied in the framework of the relativistic quark model based on the quark-diquark picture, quasipotential approach, and quantum chromodynamics (QCD). The form factors parametrizing the matrix elements of the weak transitions are calculated in the whole accessible kinematical range with the comprehensive account of the relativistic effects. The obtained results for the branching ratios and other observables agree well with the available experimental data.

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