Weak decays of doubly heavy baryons: The FCNC processes
Abstract
The discovery of doubly heavy baryon provides us with a new platform for precisely testing the standard model and searching for new physics. As a continuation of our previous works, we investigate the flavor-changing neutral current processes of doubly heavy baryons. The light-front approach is adopted to extract the form factors, in which the two spectator quarks are viewed as a diquark. Results for form factors are then used to predict some phenomenological observables, such as the decay width and the forward-backward asymmetry. We find that most of the branching ratios for b →s processes are 10-8- 10-7 and those for b →d processes are 10-9- 10-8 . The flavor SU(3) symmetry and symmetry breaking effects are explored. Parametric uncertainties are also investigated.
- Publication:
-
Physical Review D
- Pub Date:
- September 2018
- DOI:
- 10.1103/PhysRevD.98.056002
- arXiv:
- arXiv:1807.03101
- Bibcode:
- 2018PhRvD..98e6002X
- Keywords:
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- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 22 pages, 4 figures