1. RIKEN/BNL Lunch Time Talk

    "Application of the twist-3 framework to the high energy spin physics"

    Presented by Shinsuke Yoshida, Nishina Center, RIKEN

    Thursday, October 17, 2013, 12:30 pm
    Physics, Building 510, Room 2-160

    Hosted by: Koji Kashiwa

    : High energy hadron scattering is a powerful tool to investigate the internal structure of the hadrons. The perturbative QCD analysis have been successful in giving the quantitative description for many high energy processes and the knowledge of hadron structure based on the first principle. Recently some observables have shown the apparent disagreement with the conventional pQCD calculation. These novel observables have received much attention in recent decades and many theoretical works were proposed to solve the problems. In this talk, I introduce the twist-3 mechanism as the recent important progress of pQCD analysis. I especially discuss the application of the framework to the two unsolved problems, the single spin asymmetry and the proton spin problem.