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Strange Mass Corrections to Hyperonic Semi-leptonic Decay in Statistical Model
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.Comment: 16 pages, 4 Tables and 4 figures. European Physical Journal,
EPJA(2013
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