2000/03/31 by P. Yu. Kulikov, I. M. Narodetskii, A. I. Onischenko
Physics and Astronomy · #Diquark #Fermi Gamma-ray Space Telescope #Front (military) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #Quark #Quark model #Scalar (mathematics) #Top quark #hep-ph
paper · pdf · doi:10.1134/1.568354
published in Journal of Experimental and Theoretical Physics Letters 71(9), 362-366 (Pleiades Publishing) · final journal version to appear in JETP Letters
arxiv created 2000/04/25 · openalex publication_date 2000/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The enhancement of the Λ b decay width relative to B decay due to the difference in Fermi motion effects in Λ b and B is calculated in the light front quark model with the simplifying assumption that Λ b consists of a heavy quark and a light scalar diquark. In order to explain the large deviation from unity in the experimental result for τ(Λ b )/τ( B ), it is necessary that the diquark be light and the ratio of the squares of the Λ b and B wave functions at the origin be ≲1.