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Measurement of inclusive J/ψ production in Au+Au collisions at sNN=54.4 GeV at STAR

https://doi.org/10.1016/j.physletb.2026.140405

Aboona, BE; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alshammri, AK; Aschenauer, EC; Aslam, S; Atchison, J; et al (June 2026, Physics Letters B)

Free, publicly-accessible full text available June 1, 2027
Measurement of fifth- and sixth-order fluctuations of (net-)proton number in $Au + Au$ collisions from phase II of the beam energy scan program at RHIC

https://doi.org/10.1103/lq8c-9fr6

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Alshammri, A K; Aschenauer, E C; Aslam, S; Atchison, J; et al (May 2026, Physical Review C)

Free, publicly-accessible full text available May 1, 2027
Measuring spin correlation between quarks during QCD confinement

https://doi.org/10.1038/s41586-025-09920-0

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Alshammri, A K; Aschenauer, E C; Aslam, S; Atchison, J; et al (February 2026, Nature)

Free, publicly-accessible full text available February 5, 2027
Measurement of medium-induced acoplanarity in central Au-Au and $p p$ collisions at $\sqrt{s_{N N}} = 200$ GeV using direct- $photon + jet$ and $π^{0}$ $+$ jet correlations

https://doi.org/10.1103/k29c-d5ry

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Alshammri, A K; Anderson, D M; Aschenauer, E C; Aslam, S; et al (January 2026, Physical Review C)

Free, publicly-accessible full text available January 1, 2027
Energy Independence of the Collins Asymmetry in $p^{↑} p$ Collisions

https://doi.org/10.1103/jgsw-zhny

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Alshammri, A K; Aschenauer, E C; Aslam, S; Atchison, J; et al (December 2025, Physical Review Letters)

The STAR experiment reports new, high-precision measurements of the transverse single-spin asymmetries for $π^{\pm}$ within jets, namely the Collins asymmetries, from transversely polarized $p^{↑} p$ collisions at $\sqrt{s} = 510 GeV$ . The energy-scaled distribution of jet transverse momentum, $x_{T} = 2 p_{T, jet} / \sqrt{s}$ , shows a remarkable consistency for Collins asymmetries of $π^{\pm}$ in jets between $\sqrt{s} = 200 GeV$ and 510 GeV. This indicates that the Collins asymmetries are nearly energy independent, with, at most, a very weak scale dependence in $p^{↑} p$ collisions. These results extend to high-momentum scales ( $Q^{2} \leq 3400 {GeV}^{2}$ ) and enable unique tests of evolution and universality in the transverse-momentum-dependent formalism, thus providing important constraints for the Collins fragmentation functions.
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Free, publicly-accessible full text available December 1, 2026
Precision Measurement of Net-Proton-Number Fluctuations in $Au + Au$ Collisions at RHIC

https://doi.org/10.1103/9l69-2d7p

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Alshammri, A K; Aschenauer, E C; Aslam, S; Atchison, J; et al (September 2025, Physical Review Letters)

Free, publicly-accessible full text available September 1, 2026
Precision measurement of the longitudinal double-spin asymmetry for dijet production at intermediate pseudorapidity in polarized $p p$ collisions at $\sqrt{s} = 200 GeV$

https://doi.org/10.1103/r5jw-lwhg

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Aschenauer, E C; Aslam, S; Atchison, J; Bairathi, V; et al (July 2025, Physical Review D)

The STAR Collaboration reports precise measurements of the longitudinal double-spin asymmetry, $A_{L L}$ , for dijet production with at least one jet at intermediate pseudorapidity $0.8 < η_{jet} < 1.8$ in polarized proton-proton collisions at a center-of-mass energy of 200 GeV. This study explores partons scattered with a longitudinal momentum fraction ( $x$ ) from 0.01 to 0.5, which 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 find the gluon polarization to be positive. In contrast, the negative gluon polarization solution from the JAM Collaboration is found to be strongly disfavored.
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Measurement of In-Medium Jet Modification Using Direct $Photon + Jet$ and $π^{0} + Jet$ Correlations in $p + p$ and Central $Au + Au$ Collisions at $\sqrt{s_{N N}} = 200 GeV$

https://doi.org/10.1103/PhysRevLett.134.232301

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Anderson, D M; Aschenauer, E C; Aslam, S; Atchison, J; et al (June 2025, Physical Review Letters)

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Semi-inclusive direct photon $+$ jet and $π^{0} + jet$ correlations measured in $p + p$ and central $Au + Au$ collisions at $\sqrt{s_{N N}} = 200 GeV$

https://doi.org/10.1103/8b8y-98yh

Aboona, B E; Adam, J; Adamczyk, L; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Anderson, D M; Aschenauer, E C; Aslam, S; Atchison, J; et al (June 2025, Physical Review C)

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Measurement of directed flow in $Au + Au$ collisions at $\sqrt{s_{N N}} = 19.6$ and 27 GeV with the STAR event plane detector

https://doi.org/10.1103/PhysRevC.111.014906

Abdulhamid, M I; Aboona, B E; Adam, J; Adamczyk, L; Adams, J R; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Aschenauer, E C; Aslam, S; et al (January 2025, Physical Review C)

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