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Longitudinal double-spin asymmetries of inclusive jet and dijet production at STAR
by Maria Zurek
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Submission summary
Authors (as registered SciPost users): | Maria Zurek |
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Preprint Link: | scipost_202107_00085v1 (pdf) |
Date accepted: | 2022-05-06 |
Date submitted: | 2021-07-30 05:05 |
Submitted by: | Zurek, Maria |
Submitted to: | SciPost Physics Proceedings |
Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
Ontological classification | |
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Academic field: | Physics |
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Abstract
At the STAR experiment, the gluon helicity distribution Δg(x,Q2) can be accessed through the double-spin asymmetries ALL of inclusive jet and dijet production in collisions of longitudinally polarized protons. These proceedings report on recently published results of ALL for inclusive jets and dijets at √s=200~GeV and √s=510 GeV in mid-pseudorapidity (|η|<1) and preliminary results for dijets in intermediate pseudrapidity (−0.8<η<1.8). The mid-pseudorapidity jet and dijet measurements are sensitive to Δg(x,Q2) for gluon momentum fractions x from ≃0.5 down to ≃0.015; the sensitivity region for dijets in intermediate pseudorapidity at 510 GeV extends to even lower x. The measurements are in good agreement with previous STAR results and recent theoretical evaluations of prior world data.
Published as SciPost Phys. Proc. 8, 086 (2022)