Published February 5, 2016 | Version v1
Journal article

Recent results from COMPASS on exclusive muoproduction

  • 1. Division of High Energy Physics, National Centre for Nuclear Research, PL 00-681 Warsaw (Poland)

Description

The 160 GeV polarised muon beam available at CERN, with positive or negative charge, makes COMPASS a unique place for GPD studies. The first GPD related COMPASS results come from exclusive vector meson production on transversely polarised protons and deuterons. The data were taken in 2003-2010 with large solid-state polarised targets, although without detection of recoil particles. Results on various transverse target spin dependent azimuthal asymmetries are presented and their relations to GPDs are discussed. The dedicated COMPASS GPD program started in 2012 with commissioning of a new long liquid hydrogen target and new detectors such as the large recoil proton detector and the large-angle electromagnetic calorimeter. It was followed by a short pilot 'DVCS run'. The performance of the setup and first results on DVCS and exclusive π0 channels have been demonstrated. The full data taking for the GPD program approved within COMPASS-II proposal is planned for 2016 and 2017. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/678/1/012045

Additional details

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
678
Journal Issue
1
Journal Page Range
[6 p.]
ISSN
1742-6596

Conference

Title
16. workshop on high energy spin physics
Acronym
D-SPIN2015
Dates
8-12 Sep 2015
Place
Dubna (Russian Federation)