2024-03-28T12:24:59Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00041462
2022-08-05T00:25:28Z
3:62:5598:84
Measurement of the cross section and longitudinal double-spin asymmetry for dijet production in polarized pp collisions at √s=200 GeV
STA Collaboration
Esumi, S.
江角, 晋一
エスミ, シンイチ
We report the first measurement of the longitudinal double-spin asymmetry ALL for midrapidity dijet production in polarized pp collisions at a center-of-mass energy of √s=200 GeV. The dijet cross section was measured and is shown to be consistent with next-to-leading order (NLO) perturbative QCD predictions. ALL results are presented for two distinct topologies, defined by the jet pseudorapidities, and are compared to predictions from several recent NLO global analyses. The measured asymmetries, the first such correlation measurements, support those analyses that find positive gluon polarization at the level of roughly 0.2 over the region of Bjorken-x>0.05.
journal article
American Physical Society
2017-04
application/pdf
Physical review D
7
95
071103
2470-0010
AA00773624
https://tsukuba.repo.nii.ac.jp/record/41462/files/PRD_95-071103.pdf
eng
https://doi.org/10.1103/PhysRevD.95.071103
(c) 2017 American Physical Society
open access