Title:  Precision Measurement of the Longitudinal Double-Spin Asymmetries for Dijet Production at Intermediate Pseudorapidity in Polarized $pp$ Collisions at $\sqrt{s}$ = 200 GeV

PA: Ting Lin

Target Journal: Phys. Rev. D

Abstract: The STAR Collaboration reports precise measurements of the longitudinal double-spin asymmetry, $A_{LL}$, for dijet production within the intermediate pseudorapidity in polarized proton-proton ($pp$) collisions at a center-of-mass energy of 200 GeV. This study explores partons scattered in higher pseudorapidity regions with a momentum fraction ($x$) from 0.01 to 0.5, that are predominantly characterized by interactions between high-$x$ valence quarks and low-$x$ gluons. The results are in good agreement with previous measurements at 200 GeV with improved precision and are found to be consistent with the predictions of global analyses that incorporate the previous RHIC results.

Paper Draft:

    Version-2024-04-16 (Add one session for JAM22) 

    Version-2024-01-23 (for Spin/Cold-QCD PWG preview)
   

Analysis Note:

 
    PSN0828

     Version-2024-01-23

     Version-2022-07-06

     Version-2022-12-08

       offline/paper/psn0828/

Presentation:
   GPC request in PWG - 2024-01-24 

   Paper preview in PWGC - 2022-12-02

 
Proposed Figures: