PAX: Polarized Antiproton eXperiments

Journal Article · Thu Oct 06 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2122212· OSTI ID:20726403

Lenisa, P ^[1]; INFN, 44100 Ferrara ^[2]

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1. Universita di Ferrara, 44100 Ferrara (Italy)
2. Italy

Polarized antiprotons produced by spin filtering with an internal polarized gas target provide access to a wealth of single- and double-spin observables, thereby opening a window to physics uniquely accessible with the HESR at FAIR. This includes a first measurement of the transversity distribution of the valence quarks in the proton, and a first measurement of the moduli and the relative phase of the time-like electric and magnetic form factors GE,M of the proton. In polarized and unpolarized pp-bar elastic scattering open questions like the contribution from the odd charge-symmetry Landshoff-mechanism at large vertical bar t vertical bar and spin-effects in the extraction of the forward scattering amplitude at low vertical bar t vertical bar can be addressed.

• OSTI ID: 20726403
• Journal Information: AIP Conference Proceedings, Vol. 792, Issue 1; Conference: DIS 2005: 13. international workshop on deep inelastic scattering, Madison, WI (United States), 27 Apr - 1 May 2005; Other Information: DOI: 10.1063/1.2122212; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
43 PARTICLE ACCELERATORS
ANTIPROTON SOURCES
ANTIPROTONS
DISTRIBUTION
ELASTIC SCATTERING
ELECTROMAGNETIC FORM FACTORS
POLARIZATION
POLARIZED TARGETS
QUARKS
SCATTERING AMPLITUDES
SPIN
SYMMETRY
TRANSVERSE MOMENTUM
VALENCE