The COMPASS experiment at CERN

By O. Kouznetsov. 2012

141 citations recorded by the source corpus.

COMPASS ( COmmonMuon andProton Apparatus forStructure andSpectroscopy) is a fixed target experiment at CERN dedicated to studies of the spin st ructure of the nucleon and of the spectroscopy of hadrons. During the years 2002-2004, 20067 and 2010 the COMPASS collaboration has collected a large amount of data by scatterin g polarized 160 GeV/c muons on polarized6LiD and NH3 targets. These data were used in particulary to evaluate the gluon contribution ∆G to the nucleon spin, to measure the helicity quark distribut ionsx∆q(x) and for study the transversity effects. In 2008-2009 COMPASS performed a search for J PC-exotic mesons, glueballs or hybrids, through light hadron spectroscopy in high energy 190 GeV/c π−-proton reactions using both centrally produced and diffractive events. Preliminary results from the se searches are discussed. Finally the future COMPASS-II experimental program beyond 2011 is presented. A study of Generalised Parton Distributions (GPDs) will be done in exc lusive reactions like Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Pro duction (DVMP). In parallel the study of flavour separation and hadron fragmentation in Semi -Inclusive Deep Inelastic Scattering (SIDIS) will be continued. Drell-Yan (DY) processes wil l be used for study of Transverse Momentum Dependent distributions (TMDs) using a transvers ely polarized target. A Primakoff reaction will be used to extract pion and kaon polarisabilit ies.

Subfields: Computer Networks and Communications, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/430afc4624258ba26309c933ac10db6fcc4a6c1c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computer Networks and Communications

  1. W. Ochs

In Nuclear and High Energy Physics

  1. W. Ochs

Citations in the corpus