Differential cross sections and spin density matrix elements for the reaction gamma p -> p omega

TL;DR

This paper presents the most precise and extensive measurements of differential cross sections and spin density matrix elements for the gamma p -> p omega reaction, revealing new structures in the data across a wide energy range.

Contribution

It provides high-statistics, detailed measurements of omega photoproduction, significantly improving the precision and scope compared to previous studies.

Findings

Identification of prominent structures in the data

First observation of several features due to improved statistics

Extensive data covering energies from threshold to 2.84 GeV

Abstract

High-statistics differential cross sections and spin density matrix elements for the reaction gamma p -> p omega have been measured using the CLAS at Jefferson Lab for center-of-mass (CM) energies from threshold up to 2.84 GeV. Results are reported in 112 10-MeV wide CM energy bins, each subdivided into cos(theta_CM) bins of width 0.1. These are the most precise and extensive omega photoproduction measurements to date. A number of prominent structures are clearly present in the data. Many of these have not previously been observed due to limited statistics in earlier measurements.