High Energy Physics Esperiment (hep-ex/0505054). The document describes the physics case of the PAX experiment using polarized antiprotons, which has recently been proposed for the new Facility for Antiprotons and Ions Research (FAIR) at GSI--Darmstadt. Polarized antiprotons provide access to a wealth of single-- and double--spin observables, thereby opening a new window to physics uniquely accessible at the HESR. The polarized antiprotons would be most efficiently produced by spin--filtering in a dedicated Antiproton Polarizer Ring (APR) using an internal polarized hydrogen gas target. In the proposed collider scenario of the PAX experiment, polarized protons stored in a COSY--like Cooler Storage Ring (CSR) up to momenta of 3.5 GeV/c are bombarded head--on with 15 GeV/c polarized antiprotons stored in the HESR. This asymmetric double--polarized antiproton--proton collider is ideally suited to map, e.g., the transversity distribution in the proton. The proposed detector consists of a large--angle apparatus optimized for the detection of Drell--Yan electron pairs

Antiproton-proton scattering experiments with polarization.

CAPILUPPI, Marco;CIULLO, Giuseppe;CONTALBRIGO, Marco;DRAGO, Alessandro;FERRETTI, Paola;GIORDANO, Francesca;LENISA, Paolo;PAPPALARDO, Luciano Libero;STANCARI, Giulio;STANCARI, Michelle Dawn;STATERA, Marco;
2005

Abstract

High Energy Physics Esperiment (hep-ex/0505054). The document describes the physics case of the PAX experiment using polarized antiprotons, which has recently been proposed for the new Facility for Antiprotons and Ions Research (FAIR) at GSI--Darmstadt. Polarized antiprotons provide access to a wealth of single-- and double--spin observables, thereby opening a new window to physics uniquely accessible at the HESR. The polarized antiprotons would be most efficiently produced by spin--filtering in a dedicated Antiproton Polarizer Ring (APR) using an internal polarized hydrogen gas target. In the proposed collider scenario of the PAX experiment, polarized protons stored in a COSY--like Cooler Storage Ring (CSR) up to momenta of 3.5 GeV/c are bombarded head--on with 15 GeV/c polarized antiprotons stored in the HESR. This asymmetric double--polarized antiproton--proton collider is ideally suited to map, e.g., the transversity distribution in the proton. The proposed detector consists of a large--angle apparatus optimized for the detection of Drell--Yan electron pairs
proposal; anti-p p inelastic scattering; anti-p p elastic scattering; anti-p polarized beam; polarized target internal; spin effect; Drell-Yan process; D. hadroproduction; quark valence; quark spin; polarization transverse; spin asymmetry; p form factor; scattering amplitude forward scattering; momentum transfer dependence; cross section; storage ring proposed; storage ring lattice; luminosity; resonance depolarization; spin rotator; polarization measurement; magnetic spectrometer proposed; proposed experiment; Juelich COSY PS
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11392/1189413
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