scholarly journals Heavy quark symmetry constraints on semileptonic form factors and decay widths of doubly heavy baryons

2008 ◽  
Vol 663 (3) ◽  
pp. 234-241 ◽  
Author(s):  
E. Hernández ◽  
J. Nieves ◽  
J.M. Verde-Velasco
Keyword(s):  
Heavy Quark ◽  
Form Factors ◽  
Heavy Quark Symmetry ◽  
Heavy Baryons ◽  
Decay Widths ◽  
Symmetry Constraints

scholarly journals HEAVY DIQUARK SYMMETRY CONSTRAINTS FOR STRONG DECAYS

2012 ◽  
Vol 27 (27) ◽  
pp. 1250153 ◽  
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.

scholarly journals Non-Relativistic Model for the Semileptonic Λb→Λc Decay

1997 ◽  
Vol 12 (03) ◽  
pp. 195-204 ◽  
Author(s):  
Debrupa Chakraverty ◽  
Triptesh De ◽  
Binayak Dutta-Roy ◽  
K. S. Gupta
Keyword(s):  
Heavy Quark ◽  
Decay Width ◽  
Branching Ratio ◽  
Relativistic Model ◽  
Heavy Quark Symmetry ◽  
Heavy Baryons

We calculate the decay width for [Formula: see text] in the framework of a non-relativistic quark (NRQ) model of heavy baryons where the light quarks play the role of spectators. Our calculation does not make an explicit use of the heavy quark symmetry. The branching ratio for the above process as calculated here agrees reasonably well with the experimental value.

Radiative decays of heavy baryons with heavy quark symmetry

Pramana ◽  
1996 ◽  
Vol 47 (5) ◽  
pp. 411-417 ◽  
Author(s):  
A K Giri ◽  
L Maharana ◽  
R Mohanta
Keyword(s):  
Heavy Quark ◽  
Radiative Decays ◽  
Heavy Quark Symmetry ◽  
Heavy Baryons

SEMILEPTONIC WEAK DECAYS OF HEAVY BARYONS

2000 ◽  
Vol 15 (06) ◽  
pp. 821-831
Author(s):  
MANSOUR HAGHIGHAT
Keyword(s):  
Simple Model ◽  
Heavy Quark ◽  
Branching Ratio ◽  
Form Factors ◽  
Matrix Elements ◽  
Weak Decays ◽  
Heavy Baryons ◽  
Heavy Quark Limit

We propose a simple model to describe the semileptonic weak decays among heavy baryons in the heavy quark limit in a unified way. The current matrix elements of the heavy baryons, with spin-0 light diquark, are evaluated to give the ω-dependence of the form factors. The numerical values are also calculated and the branching ratio for [Formula: see text] is consequently obtained in the range (4.9–15.3)%.

TWO BODY NONLEPTONIC DECAYS OF Bs MESONS

2001 ◽  
Vol 16 (04) ◽  
pp. 529-540
Author(s):  
HARPREET KAUR ◽  
M. P. KHANNA
Keyword(s):  
Heavy Quark ◽  
Form Factors ◽  
Effective Theory ◽  
Heavy Quark Effective Theory ◽  
Decay Widths ◽  
Nonleptonic Decays ◽  
Spectator Model

Two-body nonleptonic decays of [Formula: see text] mesons involving heavy to heavy transitions are discussed in detail. All these decay widths are estimated by the use of spectator model dominance. The form factors for various transitions are calculated in BSW model improved to O(1/mQ) by comparison with the heavy quark effective theory.

scholarly journals Degeneracy of doubly heavy baryons from heavy quark symmetry

2016 ◽  
Vol 754 ◽  
pp. 125-128 ◽  
Author(s):  
Yong-Liang Ma ◽  
Masayasu Harada
Keyword(s):  
Heavy Quark ◽  
Heavy Quark Symmetry ◽  
Heavy Baryons
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