Spectroscopy of light baryons with strangeness -1, -2, and -3

Abstract

The present article contains the descriptive study of light strange baryons Λ, Σ, Ξ, and Ω. The Regge phenomenology with linear Regge trajectories has been employed and the relations between Regge slopes, intercepts, and baryon masses have been extracted. With the aid of these relations, ground state masses are obtained for Ξ and Ω baryons. Regge parameters have also been estimated to calculate the excited state masses for Λ, Σ, Ξ, and Ω baryons in both the (J, M 2 ) and (n, M 2 ) planes. The obtained results are compared with available experimental data and various theoretical approaches. We predict the spin-parity of recently observed light baryons and our predictions may be useful in future experimental searches of these baryons and their J P assignments.

Quantum number assignments of light strange baryons in Regge phenomenology

“…In 1978, Nambu put forth the simplest hypothesis to account for the linear Regge trajectories [39,40]. The Regge theory has been successfully used in our previous work to obtain the mass spectra of light as well as heavy baryons [8,9,41,42]. We use the same phenomenology in the present work to study the triply heavy baryons.…”

Spectroscopic study of strangeness = –3 Ω– baryon*

“…Xiao et al have studied the strong decays within chiral quark model to understand the structure of the Ω(2012) state [19]. There are several models to study the Ω baryon properties theoretically and phenomenologically such as quark pair-creation [20], QCD Sum rule [21], Glozman-Riska model [22], algebraic model by Bijker [23], and large-analysis [24,25]. Recently, A. Arifi et al have investigated the decay properties of Ξ and Ω baryons including Roper-like resonances using relativistic corrections in the constituent quark model [6].…”