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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.

Institutional Review

Valpariso University (Reply)

Sejong University (Reply)

Kentucky University (Reply)

ACU University (Reply)

AGH University (Reply)

Paper Draft:

Version-2024-11-16 (2nd round Collaboration review)

Version-2024-11-06 (After 1st round collaboration review, with Oleg's suggestions)

Version-2024-11-05 (After Institutional Review, with Carl's suggestions)

Version-2024-10-28 (After Institutional Review)

Version-2024-09-13 (For the Collaboration Review)

Version-2024-09-04 (With Carl's suggestions from GPC)

Version-2024-09-03 (With Carl's suggestions from GPC)

Version-2024-08-28 (With Carl's suggestions from GPC)

   Version-2024-08-16 (With Oleg and Jae's suggestions from GPC)

Version-2024-08-14 (With Jae's suggestions from GPC)

Version-2024-07-04 (With Zilong's suggestions from GPC)

Version-2024-06-25 (With Carl's suggestions from GPC)

Version-2024-06-23 (With Carl's suggestions from GPC, different style for Fig.9)

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

Version-2024-03-03 (After 2nd round Spin/Cold-QCD PWG Preview)

  Version-2024-02-27 (After Spin/Cold-QCD PWG Preview)

  Version-2024-02-26 (After 1st round Spin/Cold-QCD PWG preview)

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

Analysis Note:

PSN0828

Version-2024-06-23

Version-2024-05-13

Version-2024-01-23

Version-2022-07-06

Version-2022-12-08

Code:

offline/paper/psn0828/

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

Paper preview in PWGC - 2022-12-02

Proposed Figures: