New approach to K⁰-K⁰ mixing

2018/04/17 by Nasrallah, N. F.
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1804.06066

Abstract

A new QCD calculation of the B parameter of K⁰-K⁰ mixing is presented. It makes use of polynomial kernels in dispersion integrals in order to practically eliminate the contributions of the unknown pseudoscalar strange continuum. This approach avoids the arbitrariness and instability inherent to the Borel exponential kernels used in previous sum rules calculations. A simultaneous calculation of the mixed quark gluon condensate ⟨ gqσ_μν\fracλ^a2σ_μν^aq⟩ which enters in the expression for B is presented. Finally the K-meson decay constant f_K is calculated to five loop

Related

• Pseudoscalar Meson Mixing, the Contribution of the Hadronic Continuum to Deviation from Factorization
• Numerical Study of K⁰--K⁰ Mixing and B_K
• K⁰-K⁰ mixing in the Standard Model from Nf=2+1+1 Twisted Mass Lattice QCD
• Neutral Kaon mixing beyond the Standard Model
• Particle Mixing and CP-Violation