Spin-Parity Analysis of the Centrally produced KsKs system at 800 GeV

TL;DR

This paper analyzes the spin and parity of the centrally produced KsKs system at 800 GeV, revealing dominant S-wave production below 1.58 GeV/c^2 and ambiguity above, affecting the identification of the f_J(1710) meson.

Contribution

It provides the first detailed spin-parity analysis of the KsKs system at this energy, highlighting the S-wave dominance and the ambiguity in higher mass regions.

Findings

KsKs system is mainly produced in S-wave below 1.58 GeV/c^2

f_0(1500) resonance is clearly observed

Ambiguity exists in the spin assignment of f_J(1710) above 1.58 GeV/c^2

Abstract

Results are presented of the spin-parity analysis on a sample of centrally produced mesons in the reaction (p p -> p_{slow} K_s K_s p_{fast}) with 800 GeV protons on liquid hydrogen. The spin-parity analysis in the mass region between threshold and 1.58 GeV/c^2 shows that the (K_s K_s) system is produced mainly in S-wave. The f_0(1500) is clearly observed in this region. Above 1.58 GeV/c^2 two solutions are possible, one with mainly S-wave and another with mainly D-wave. This ambiguity prevents a unique determination of the spin of the f_J(1710) meson.