Updated Charged Pion A_{LL} predictions
Received some new NLO pQCD predictions from Werner incorporating DSS fragmentation functions. Here's a comparison of these predictions to the old mocked up ones used in the SPIN 2006 preliminary result:
![](/STAR/system/files/new_plus_predictions.gif)
![](/STAR/system/files/new_minus_predictions.gif)
No really dramatic changes here. The increased asymmetries might mean that g-g scattering is even more important than predicted originally. Of course, this goes in the wrong direction if we're looking for better agreement with our Pythia.
![](/STAR/system/files/new_plus_predictions.gif)
![](/STAR/system/files/new_minus_predictions.gif)
No really dramatic changes here. The increased asymmetries might mean that g-g scattering is even more important than predicted originally. Of course, this goes in the wrong direction if we're looking for better agreement with our Pythia.
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