Role of pentaquark components in $\phi$ meson production proton-antiproton annihilation reactions

TL;DR

This paper investigates how including pentaquark components in proton wave functions affects phi meson production in proton-antiproton annihilation, aligning theoretical predictions with experimental data.

Contribution

It introduces a detailed pentaquark model into proton wave functions to better explain phi meson production in annihilation reactions, using effective quark line diagrams and the 3P0 model.

Findings

Best agreement with experimental data achieved with specific pentaquark flavor-spin symmetry.

Pentaquark components significantly influence phi meson production rates.

The model successfully predicts branching ratios for various annihilation channels.

Abstract

The pentaquark component is included in the proton wave functions to study phi meson production proton-antiproton annihilation reactions. With all possible configurations of the uuds subsystem proposed for describing the strangeness spin and magnetic moment of the proton, we estimate the branching ratios of the annihilation reactions at rest proton-antiproton to phi + X (X=pi, eta, rho, omega) from atomic proton-antiproton S- and P-wave states by using effective quark line diagrams incorporating the 3P0 model. The best agreement of theoretical prediction with the experimental data is found when the pentaquark configuration of the proton wave function takes the flavor-spin symmetry, [4]_FS [22]_F [22]_S.