A coupled channel analysis of the centrally produced K+K- and pi+pi- final states in pp interactions at 450 GeV/c

TL;DR

This paper performs a coupled channel analysis of K+K- and pi+pi- final states in proton-proton collisions at 450 GeV/c, determining resonance properties and production characteristics of several scalar mesons.

Contribution

It provides the first detailed coupled channel analysis of these final states at this energy, including pole positions and branching ratios for multiple resonances.

Findings

Determined pole positions and branching ratios for f0(980), f0(1370), f0(1500), and f0(1710).

Systematic study of production properties of scalar resonances.

Enhanced understanding of scalar meson production in pp collisions.

Abstract

A coupled channel analysis of the centrally produced K+K- and pi+pi- final states has been performed in pp collisions at an incident beam momentum of 450 GeV/c. The pole positions and branching ratios to pipi and KK of the f0(980), f0(1370), f0(1500) and f0(1710) have been determined. A systematic study of the production properties of all the resonances observed in the pi+pi- and K+K- channels has been performed.