scholarly journals Semileptonic decays of double heavy baryons in a relativistic constituent three-quark model

2009 ◽  
Vol 80 (3) ◽  
Author(s):  
Amand Faessler ◽  
Thomas Gutsche ◽  
Mikhail A. Ivanov ◽  
Jürgen G. Körner ◽  
Valery E. Lyubovitskij
Keyword(s):  
Quark Model ◽  
Semileptonic Decays ◽  
Heavy Baryons

scholarly journals Semileptonic decays of doubly heavy baryons in the relativistic quark model

2004 ◽  
Vol 70 (1) ◽  
Author(s):  
D. Ebert ◽  
R. N. Faustov ◽  
V. O. Galkin ◽  
A. P. Martynenko
Keyword(s):  
Quark Model ◽  
Semileptonic Decays ◽  
Relativistic Quark Model ◽  
Heavy Baryons

scholarly journals HYPERFINE MIXING AND THE SEMILEPTONIC DECAYS OF DOUBLE-HEAVY BARYONS IN A QUARK MODEL

2009 ◽  
Vol 24 (13) ◽  
pp. 2401-2413 ◽  
Author(s):  
W. ROBERTS ◽  
MUSLEMA PERVIN
Keyword(s):  
Wave Function ◽  
Decay Rate ◽  
Quark Model ◽  
Semileptonic Decay ◽  
Semileptonic Decays ◽  
Wave Functions ◽  
Total Rate ◽  
Spin Wave Function ◽  
Full Wave ◽  
Heavy Baryons

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.

scholarly journals Semileptonic Decays of Heavy Baryons in the Relativistic Quark Model

Particles ◽  
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.

Semileptonic Decays of Heavy Baryons

2020 ◽  
Vol 51 (4) ◽  
pp. 625-631
Author(s):  
V. O. Galkin ◽  
R. N. Faustov
Keyword(s):  
Semileptonic Decays ◽  
Heavy Baryons

scholarly journals Semileptonic decays of heavy Λ baryons in a quark model

2005 ◽  
Vol 72 (3) ◽  
Author(s):  
Muslema Pervin ◽  
Winston Roberts ◽  
Simon Capstick
Keyword(s):  
Quark Model ◽  
Semileptonic Decays
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