Sala de Conferências no 3º andar (LIP Coimbra / Departamento de Física)
Sala de Conferências no 3º andar
LIP Coimbra / Departamento de Física
Description
COMPASS experiment is a fixed target experiment at the CERN SPS using
muon and hadron beams with high energy (about 200 GeV) for the
investigation of the spin structure of the nucleon and hadron
spectroscopy, respectively.
In the QCD frame, the nucleon spin structure is an interesting and
challenging topic. In this seminar, the COMPASS results on parton
momentum distributions obtained with longitudinal and transverse target
polarisations as well as the determination of the gluon polarisation are
presented.
The open questions and recent developments are discussed. New
phenomenological approaches beyond collinear frame to access a new
complementary information to help understating the nucleon
structure are also presented.