Charmonium spectroscopy motivated by general features of pNRQCD

Abstract

Mass spectrum of charmonium is computed in the framework of potential non-relativistic quantum chromodynamics. O(1/m) and O(1/m 2 ) relativistic corrections to the Cornell potential and spin-dependent potential have been added, and is solved numerically. New experimentally observed and modified positive and negative parity states like ψ(4230), ψ(4260), ψ(4360), ψ(4390), ψ(4660), χ c1 (4140) and χ c1 (4274) near open-flavor threshold have also been studied. We explain them as admixtures of S-D wave states and P-wave states. Apart from these states, some other states like X(3915), χ c1 (3872), ψ(3770) and ψ(4160) have been identified as 2 3 P 0 , 2 3 P 1 , 1 3 D 1 and 2 3 D 1 states. Subsequently, the electromagnetic transition widths and γγ, e + e − , light hadron and γγγ decay widths of several states are calculated at various leading orders. All the calculated results are compared with experimental and results from various theoretical models.

Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model

“…Studies in which the Y (4140)-Y (4274) sector is described in terms of conventional charmonium appear in Ref. [93][94][95][96][97][98]. Moreover, as seen in these papers and in Refs.…”