Spin physics with antiprotons

Abstract

New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessing in Drell-Yan processes experimental asymmetries related to cross-sections in which the parton distribution functions (PDF) only appear, without any contribution from fragmentation functions; such processes are not affected by the chiral suppression of the transversity function $h_1(x)$. Spin asymmetries in hyperon production and Single Spin Asymmetries are discussed as well, together with further items like electric and magnetic nucleonic form factors and open charm production. Counting rates estimations are provided for each physical case. The sketch of a possible experimental apparatus is proposed.

Presented for the proceedings of ASI "Spin and Symmetry", Prague, July 5-10, 2004, to be published in Czech. J. Phys. 55 (2005)

References in corpus (20)

• Leading-twist Single-transverse-spin asymmetries: Drell-Yan and Deep-Inelastic Scattering
• Transverse Polarisation of Quarks in Hadrons
• Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
• Investigating the origins of transverse spin asymmetries at RHIC
• Initial-State Interactions in the Unpolarized Drell-Yan Process
• Single spin asymmetries from a gluonic background in the Drell-Yan process
• Lambda polarization from unpolarized quark fragmentation
• High-Energy Hadron-Induced Dilepton Production from Nucleons and Nuclei
• Color gauge invariance in the Drell-Yan process
• Parton intrinsic motion: suppression of the Collins mechanism for transverse single spin asymmetries in p(transv. polarised) p --> pion + X
• Transverse single spin asymmetries in Drell-Yan processes
• Single spin asymmetry for the Drell-Yan process
• Double-Spin Transverse Asymmetries in Drell-Yan Processes
• THE PROTON SPIN PUZZLE AND DEPOLARIZATION IN $\bar{p}p\to \bar{\Lambda }\Lambda$
• Spin Transfer in Exclusive Lambda Production from pp Collisions at 3.67 GeV/c
• Monte-Carlo simulation of events with Drell-Yan lepton pairs from antiproton-proton collisions
• Single transverse-spin asymmetry in Drell-Yan lepton angular distribution
• Charm and Bottom Quark Production Cross Sections Near Threshold
• Spin Observables in Antilambda-Lambda Production from Antiproton-Proton Annihilation with a Transverse Inital State Polarization
• Novel Azimuthal Asymmetries in Drell Yan and Semi-inclusive Deep Inelastic Scattering

Cited by in corpus (5)

• Dilepton production near partonic threshold in transversely polarized proton-antiproton collisions
• Monte Carlo simulation of events with Drell-Yan lepton pairs from antiproton-proton collisions: the fully polarized case
• Monte Carlo simulation of the Sivers effect in high-energy proton-proton collisions
• Effects of azimuth-symmetric acceptance cutoffs on the measured asymmetry in unpolarized Drell-Yan fixed target experiments
• QCD Corrections to Dilepton Production near Partonic Threshold in proton-antiproton Scattering