A Partial-Wave Analysis of Centrally Produced Two-Pseudoscalar Final States in pp Reactions at COMPASS

Understand

COMPASS is a fixed-target experiment at CERN SPS which focused on light-quark hadron spectroscopy during the data taking in 2008 and 2009.

• A world-leading data set was collected with a 190GeV/c hadron beam impinging on a liquid hydrogen target in order to study the central production of glueball candidates.
• In this report, we motivate double-Pomeron exchange as a relevant production process for mesons without valence quark content.
• We select a centrally produced sample from the COMPASS data set recorded with a proton beam and introduce a decomposition into partial waves.