Mixing Angle of Hadrons in QCD: A New View

Abstract

A new method for calculation of the mixing angle between the hadrons within QCD sum rules is proposed. In this method, the mixing is expressed in terms of quark and gluon degrees of freedom. As an application, the detailed calculation of the mixing angle between heavy cascade baryons Xi_Q and Xi_Q', Q=c,~b is presented and it is found that the mixing angle between Xi_b (Xi_c) and Xi_b' (Xi_c') is given by theta_b = 6.4^\circ \pm 1.8 ^\circ (theta_c = 5.5^\circ \pm 1.8^\circ).

10 pages, 4 figures, 1 table, Changes in the text only

References in corpus (5)

• Mixing and Decay Constants of Pseudoscalar Mesons
• New Charmonium States in QCD Sum Rules: a Concise Review
• Mixing of Xi_c and Xi_c' Baryons
• The Ξ_Q - Ξ_Q' Mixing and Heavy Baryon Masses
• On Mass Formulas for Charm and Beauty Baryons

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