2013/08/31 by A. Upadhyay, Alka Upadhyay, M. Batra +1
Physics and Astronomy · #Baryon #Chiral symmetry breaking #Coupling constant #High-Energy Particle Collisions Research #Meson #Octet #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudovector #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Strange quark #Symmetry breaking #Valence (chemistry) #hep-ph
paper · pdf · doi:10.1140/epja/i2013-13160-2
published as Eur. Phys. J. A (2013) 49: 160 · 16 pages, 4 Tables and 4 figures. European Physical Journal, EPJA(2013)
arxiv created 2013/11/22 · openalex publication_date 2013/12/01 · arxiv updated 2015/06/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The spin distributions, weak decay matrix elements for strange baryon octets with SU(3) breaking effects is studied. We systematically apply operator formalism along with statistical method to study JP= strange baryon octets for their low energy properties. Baryon is taken as an ensemble of quark-gluon Fock states in sea with three valence quarks to have spin-1/2, color-1 and flavor-8 quantum numbers. Detailed balance principle is applied to calculate the probabilities of each Fock states, with the inclusion of mass correction of strange quark in order to check the SU(3) breaking in weak decays constants and spin distributions. A dominant contribution from the vector sea is verified as compared to scalar and tensor sea, also the symmetry breaking correction leads to the deviations in the value of axial vector matrix elements ratio from experimental values by 17%. Present framework suggests a stronger base to choose statistical model with detailed balance principle to verify the experimental and theoretical values available and hence provide a deeper understanding to the strange baryon structure. Symmetry breaking effects lead to reduction in the values of axial matrix elements. Its contribution has a significant role in determining the validity of present approach.