Session M3: New Results on the Polarized Glue in the Nucleon

3:30 PM–5:18 PM, Sunday, April 13, 2008
Hyatt Regency St. Louis Riverfront (formerly Adam's Mark Hotel), - St. Louis E

Sponsoring Unit: DNP
Chair: Abhay Deshpande, Stony Brook University and RIKEN-BNL Research Center

Abstract ID: BAPS.2008.APR.M3.3

Abstract: M3.00003 : Beller Lectureship Talk: Theoretical status and advances in understanding the role of polarized gluons

4:42 PM–5:18 PM

Preview Abstract

Author:

  Daniel de Florian
    (Universidad de Buenos Aires)

The contribution of quarks and gluons to the spin of the proton has been a puzzle since the first precise polarized measurements performed 20 years ago. In this talk, after summarizing the current knowledge on spin dependent parton distributions, I will present the results of a global QCD (NLO) analysis of all available polarized data. The inclusion of the recent proton-proton RHIC data, plus the DIS inclusive and semi- inclusive measurements allows attempting for a more precise determination of the gluon polarization. I will put special emphasis on the value obtained for the first moment of the gluonic distribution, the actual contribution of gluons to the spin of the nucleon.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.APR.M3.3