Mixing angle of doubly heavy baryons in QCD

We calculate the mixing angles between the spin-1/2, Xi(bc)-Xi'(bc) and Omega(bc)-Omega'(bc) states of doubly heavy baryons within the QCD sum rules method. It is found that the mixing angles are large and have the values phi(Xi bc) = 16 degrees +/- 5 degrees and phi(Omega bc) = 18 degrees +/- 6 degrees, respectively. The mixing angles are slightly smaller compared to the predictions of the non-relativistic quark model, phi(Xi bc) = 25.5 degrees and phi(Omega bc) = 25.9 degrees.

Citation Formats
T. Alıyev, K. AZİZİ, and M. Savcı, “Mixing angle of doubly heavy baryons in QCD,” PHYSICS LETTERS B, vol. 715, pp. 149–151, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39349.