Violent Collisions of Spinning Protons

TL;DR

This paper reviews the history and recent experimental findings on large transverse spin effects in polarized proton collisions, and discusses future experiments at high-energy accelerators to explore these phenomena.

Contribution

It provides a comprehensive overview of past results and outlines future experimental plans to investigate violent elastic collisions of polarized protons.

Findings

Large transverse spin effects observed in high energy proton-proton experiments

Unexplained phenomena in polarized proton collisions at various accelerators

Future experiments planned at IHEP-Protvino and J-PARC to study these effects

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 the 70 GeV U-70 accelerator at IHEP-Protvino in Russia and the new high intensity 50 GeV J-PARC facility being built at Tokai in Japan.