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Measurement of charged hadron multiplicity in Au+Au collisions at $$ \sqrt{{\textrm{s}}_{\textrm{NN}}} $$ = 200 GeV with the sPHENIX detector

https://doi.org/10.1007/JHEP08(2025)075

Abdulhamid, M I; Acharya, U; Adams, E R; Adawi, G; Aidala, C A; Akiba, Y; Alfred, M; Ali, S; Alsayegh, A; Altaf, S; et al (August 2025, Journal of High Energy Physics)

A<sc>bstract</sc> The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of$$ \sqrt{{\textrm{s}}_{\textrm{NN}}} $$ $\sqrt{s_{NN}}$ = 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |η|<1.1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
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Measurement of the transverse energy density in $Au + Au$ collisions at $\sqrt{s_{N N}} = 200 GeV$ with the sPHENIX detector

https://doi.org/10.1103/h8d5-swg6

Abdulhamid, M I; Acharya, U; Adams, E R; Adawi, G; Aidala, C A; Akiba, Y; Alfred, M; Ali, S; Alsayegh, A; Altaf, S; et al (August 2025, Physical Review C)

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Design and Beam Test Results for the 2-D Projective sPHENIX Electromagnetic Calorimeter Prototype

https://doi.org/10.1109/TNS.2020.3034643

Aidala, C. A.; Altaf, S.; Belmont, R.; Boose, S.; Cacace, D.; Connors, M.; Desmond, E.; Frantz, J.; Gamez, E. A.; Grau, N.; et al (February 2021, IEEE Transactions on Nuclear Science)
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Centrality dependence of Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{N N}} = 200$ GeV $Au + Au$ collisions

https://doi.org/10.1103/PhysRevC.110.064909

Abdulameer, N J; Acharya, U; Adare, A; Aidala, C; Ajitanand, N N; Akiba, Y; Akimoto, R; Al-Ta'ani, H; Alexander, J; Angerami, A; et al (December 2024, Physical Review C)

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Jet modification via $π^{0}$ -hadron correlations in $Au + Au$ collisions at $\sqrt{s_{N N}} = 200$ GeV

https://doi.org/10.1103/PhysRevC.110.044901

Abdulameer, N J; Acharya, U; Adare, A; Afanasiev, S; Aidala, C; Ajitanand, N N; Akiba, Y; Al-Bataineh, H; Alexander, J; Alfred, M; et al (October 2024, Physical Review C)

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Nonprompt direct-photon production in $Au + Au$ collisions at $\sqrt{s_{N N}} = 200$ GeV

https://doi.org/10.1103/PhysRevC.109.044912

Abdulameer, N J; Acharya, U; Adare, A; Aidala, C; Ajitanand, N N; Akiba, Y; Alfred, M; Apadula, N; Asano, H; Azmoun, B; et al (April 2024, Physical Review C)

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Charm- and bottom-quark production in Au+Au collisions at $\sqrt{s_{N N}} = 200$ GeV

https://doi.org/10.1103/PhysRevC.109.044907

Abdulameer, N J; Acharya, U; Adare, A; Aidala, C; Ajitanand, N N; Akiba, Y; Alfred, M; Apadula, N; Asano, H; Azmoun, B; et al (April 2024, Physical Review C)

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Identified charged-hadron production in $p + Al$ , ${}^{3}{He} + Au$ , and $Cu + Au$ collisions at $\sqrt{s_{N N}} = 200 GeV$ and in $U + U$ collisions at $\sqrt{s_{N N}} = 193 GeV$

https://doi.org/10.1103/PhysRevC.109.054910

Abdulameer, N J; Acharya, U; Adare, A; Aidala, C; Ajitanand, N N; Akiba, Y; Akimoto, R; Alexander, J; Alfred, M; Andrieux, V; et al (May 2024, Physical Review C)

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Transverse single-spin asymmetry of charged hadrons at forward and backward rapidity in polarized $p + p$ , $p + Al$ , and $p + Au$ collisions at $\sqrt{s_{N N}} = 200 GeV$

https://doi.org/10.1103/PhysRevD.108.072016

Abdulameer, N J; Acharya, U; Aidala, C; Akiba, Y; Alfred, M; Andrieux, V; Apadula, N; Asano, H; Azmoun, B; Babintsev, V; et al (October 2023, Physical Review D)

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Improving constraints on gluon spin-momentum correlations in transversely polarized protons via midrapidity open-heavy-flavor electrons in $p^{↑} + p$ collisions at $\sqrt{s} = 200 GeV$

https://doi.org/10.1103/PhysRevD.107.052012

Abdulameer, N. J.; Acharya, U.; Aidala, C.; Akiba, Y.; Alfred, M.; Andrieux, V.; Apadula, N.; Asano, H.; Azmoun, B.; Babintsev, V.; et al (March 2023, Physical Review D)

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