The COMPASS Hadron Spectroscopy Programme
A. Austregesilo (for the COMPASS collaboration)

TL;DR
The COMPASS experiment at CERN investigates hadron structure and dynamics, focusing on light-quark spectroscopy, exotic mesons, and baryons using high-statistics data and advanced analysis techniques to explore fundamental QCD phenomena.
Contribution
This paper presents new high-statistics data and analysis methods for light-quark hadron spectroscopy, including spin-exotic mesons and baryons, advancing understanding of QCD resonances.
Findings
Observation of a spin-exotic resonance
Identification of glueball candidates
Detailed partial wave analysis results
Abstract
COMPASS is a fixed-target experiment at the CERN SPS for the investigation of the structure and the dynamics of hadrons. The experimental setup features a large acceptance and high momentum resolution spectrometer including particle identification and calorimetry and is therefore ideal to access a broad range of different final states. Following the promising observation of a spin-exotic resonance during an earlier pilot run, COMPASS focused on light-quark hadron spectroscopy during the years 2008 and 2009. A data set, world leading in terms of statistics and resolution, has been collected with a 190GeV/c hadron beam impinging on either liquid hydrogen or nuclear targets. Spin-exotic meson and glueball candidates formed in both diffractive dissociation and central production are presently studied. Since the beam composition includes protons, the excited baryon spectrum is also…
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research
