Eur. Phys. J. A (2007) 31: 417-423
https://doi.org/10.1140/epja/i2006-10232-4

QNP 2006

Hard collisions of spinning protons: Past, present and future

Spin Physics Center, University of Michigan, 48109-1120, Ann Arbor, MI, USA

^* e-mail: krisch@umich.edu

Received: 8 November 2006
Accepted: 15 November 2006
Published online: 21 March 2007

Abstract

There will be a review of the history of polarized proton beams, and a discussion of the unexpected and still unexplained large transverse spin effects found in several high-energy proton-proton spin experiments at the ZGS, AGS and Fermilab. Next, there will be a discussion of present and possible future experiments on the violent elastic collisions of polarized protons at IHEP-Protvino's 70GeV U-70 accelerator in Russia and the new high-intensity 50GeV J-PARC facility being built at Tokai in Japan.