A study of the f0(1370), f0(1500), f0(2000) and f2(1950) observed in the centrally produced 4pi final states

TL;DR

This paper investigates the production and decay characteristics of several scalar and tensor mesons in central proton-proton interactions at high energy, revealing differences in their distribution patterns that suggest underlying physical distinctions.

Contribution

It provides detailed measurements of the dPT, phi, and |t| distributions for multiple f0 and f2 resonances, highlighting differences not solely attributable to spin.

Findings

f0(1370) and f0(2000) have similar distribution dependences

f2(1950) exhibits different distribution patterns from f2(1270) and f2'(1520)

distribution dependences are not solely determined by spin

Abstract

The production and decay properties of the f0(1370), f0(1500), f0(2000) and f2(1950) have been studied in central pp interactions at 450 GeV/c. The dPT, phi and |t| distributions of these resonances are presented. For the J = 0 states, the f0(1370) and f0(2000) have similar dPT and phi dependences. These are different to the dPT and phi dependences of the f0(980), f0(1500) and f0(1710). For the J = 2 states the f2(1950) has different dependences to the f2(1270) and f2'(1520). This shows that the dPT and phi dependences are not just J phenomena.