R K DAS ¹, A R PANDA², R K SAHOO³ and M R SWAIN⁴

¹ V. H. College, Nikirai 754 211, India
² Physics Department, Kendrapara College, Kendrapara 754 211, India
³ Pattamundai College, Pattamundai 754 215, India
⁴ Kashinath College, Kaipara 755 010, India

Abstract.

The semileptonic decay width of heavy baryons such as (L_b --> L_c en) has been estimated in the framework of a nonrelativistic field theoretic quark model where four component quark field operators along with a harmonic oscillator wave function are used to describe translationally invariant hadronic states. The present estimation does not make an explicit use of heavy quark symmetry and has a reasonable agreement with the experimentally measured decay width, polarisation ratio and form factors with the harmonic oscillator radii and quark momentum distribution inside the hadron as free parameters.

Keywords:  Semileptonic decay; quark model; field theory.

Pacs Nos.  13.30.Ce; 12.39.Jh; 14.20.Lq; 14.20.Mr