D. Richford

activity

20162026

most citedCreating small circular, elliptical, and triangular droplets of quark-gluon plasma

317 citations · 1.1k across the 62 of their papers we have counts for

collaborators

65 papers

nucl-ex2026

Elliptic flow of $π^{0}$ mesons in Cu $+$ Au collisions at $s_{_{N N}} = 200$ GeV and U $+$ U at $s_{_{N N}} = 193$ GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +379

The second-order azimuthal anisotropy coefficients ( $v_{2}$ ) of neutral $π$ mesons ( $π^{0}$ ) have been measured as a function of the transverse momentum ( $p_{T}$ ) and centrality of Cu $+$ …

nucl-ex2026

Measurement of isolated prompt photon production in $p$ + $p$ collisions at $s = 200$ GeV with the sPHENIX detector

sPHENIX Collaboration, M. I. Abdulhamid, U. Acharya +217

The differential cross section of isolated prompt photon production is measured as a function of photon transverse energy ( $E_{T}^{γ}$ ) in proton--proton ( $p$ + $p$ ) collision…

nucl-ex2026

Measurement of dijet transverse momentum imbalance and azimuthal acoplanarity in $p$ + $p$ collisions at $s = 200$ GeV with the sPHENIX detector

sPHENIX Collaboration, M. I. Abdulhamid, U. Acharya +326

This Letter reports on measurements of dijet transverse momentum ( $p_{T}$ ) imbalance and azimuthal acoplanarity in proton-proton collisions at $s = 200$ ~GeV, using da…

hep-ex2025

Transverse single-spin asymmetry of forward $η$ mesons in $p^{↑} + p$ collisions at $s = 200$ GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +380

Utilizing the 2012 transversely polarized proton data from the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, the forward $η$ -meson transverse single-spin asymm…

hep-ex2025

Cross sections of $η$ mesons in $p$ $+$ $p$ collisions at forward rapidity at $s = 500$ GeV and central rapidity at $s = 510$ GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +497

We present the first measurements of the forward and midrapidity $η$ -meson cross sections from $p$ $+$ $p$ collisions at $s = 500$ and $510$ ~GeV, respectively. We also report th…

nucl-ex2025

Low-mass vector-meson production at forward rapidity in $p$ $+$ $p$ and Au $+$ Au collisions at $s_{_{N N}} = 200$ ~GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +352

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson ( $ω + ρ$ and $ϕ$ ) production through the dimuon decay channel at forward rapidity $(1.…

nucl-ex2025

Azimuthal anisotropy of direct photons in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +322

The PHENIX experiment at the Relativistic Heavy Ion Collider measured the second Fourier component $v_{2}$ of the direct-photon azimuthal anisotropy at midrapidity in Au $+$ Au collisi…

nucl-ex2025★ 2 cited

Measurement of the transverse energy density in Au+Au collisions at $s_{N N} = 200$ GeV with the sPHENIX detector

sPHENIX Collaboration, M. I. Abdulhamid, U. Acharya +302

This paper reports measurements of the transverse energy per unit pseudorapidity ( $d E_{T} / d η$ ) produced in Au+Au collisions at $s_{N N} = 200$ GeV, performed with the sPHENIX…

nucl-ex2025★ 3 cited

Measurement of charged hadron multiplicity in Au+Au collisions at $s_{NN} = 200$ GeV with the sPHENIX detector

sPHENIX Collaboration, M. I. Abdulhamid, U. Acharya +302

The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of $s_{NN} = 200$ GeV is measured using data collected by t…

nucl-ex2024

Measurement of elliptic flow of J $/ ψ$ in $s_{_{N N}} = 200$ GeV Au $+$ Au collisions at forward rapidity

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +365

We report the first measurement of the azimuthal anisotropy of J $/ ψ$ at forward rapidity ( $1.2 < ∣ η ∣ < 2.2$ ) in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV at the Relativistic Hea…

hep-ex2024

Multiplicity dependent $J / ψ$ and $ψ (2 S)$ production at forward and backward rapidity in $p$ $+$ $p$ collisions at $s = 200$ GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +298

The $J / ψ$ and $ψ (2 S)$ charmonium states, composed of $c c ˉ$ quark pairs and known since the 1970s, are widely believed to serve as ideal probes to test quantum chromodynamics i…

nucl-ex2024★ 7 cited

Centrality dependence of Lévy-stable two-pion Bose-Einstein correlations in $s_{_{N N}} = 200$ GeV Au $+$ Au collisions

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +394

The PHENIX experiment measured the centrality dependence of two-pion Bose-Einstein correlation functions in $s_{_{N N}} = 200$ ~GeV Au $+$ Au collisions at the Relativistic Heavy…

nucl-ex2024★ 5 cited

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

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +532

High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charg…

nucl-ex2023★ 8 cited

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

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +477

The PHENIX experiment has performed a systematic study of identified charged-hadron ( $π^{\pm}$ , $K^{\pm}$ , $p$ , $p ˉ$ ) production at midrapidity in $p$ $+$ Al, $^{3}$ He $+$ Au, Cu $+$ Au c…

physics.acc-ph2023

Artificial Intelligence for the Electron Ion Collider (AI4EIC)

C. Allaire, R. Ammendola, E. -C. Aschenauer +92

The Electron-Ion Collider (EIC), a state-of-the-art facility for studying the strong force, is expected to begin commissioning its first experiments in 2028. This is an opportune t…

nucl-ex2023★ 13 cited

Disentangling centrality bias and final-state effects in the production of high- $p_{T}$ $π^{0}$ using direct $γ$ in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

N. J. Abdulameer, U. Acharya, C. Aidala +275

PHENIX presents a simultaneous measurement of the production of direct $γ$ and $π^{0}$ in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV over a $p_{T}$ range of 7.5 to 18 GeV/ $c$ fo…

hep-ex2023★ 4 cited

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

N. J. Abdulameer, U. Acharya, C. Aidala +319

Reported here are transverse single-spin asymmetries ( $A_{N}$ ) in the production of charged hadrons as a function of transverse momentum ( $p_{T}$ ) and Feynman- $x$ ( $x_{F}$ ) in polarize…

hep-ex2023

Transverse single-spin asymmetry of midrapidity $π^{0}$ and $η$ mesons in $p$ +Au and $p$ +Al collisions at $s_{_{N N}} =$ 200 GeV

N. J. Abdulameer, U. Acharya, C. Aidala +319

Presented are the first measurements of the transverse single-spin asymmetries ( $A_{N}$ ) for neutral pions and eta mesons in $p$ +Au and $p$ +Al collisions at $s_{_{N N}} = 200$ Ge…

nucl-ex2022★ 13 cited

Measurement of $ϕ$ -meson production in Cu $+$ Au at $s_{_{N N}} = 200$ GeV and U $+$ U at $s_{_{N N}} = 193$ GeV

N. J. Abdulameer, U. Acharya, C. Aidala +408

The PHENIX experiment reports systematic measurements at the Relativistic Heavy Ion Collider of $ϕ$ -meson production in asymmetric Cu $+$ Au collisions at $s_{_{N N}}$ =200 GeV…

hep-ex2022

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

N. J. Abdulameer, U. Acharya, C. Aidala +321

Polarized proton-proton collisions provide leading-order access to gluons, presenting an opportunity to constrain gluon spin-momentum correlations within transversely polarized pro…

nucl-ex2022★ 20 cited

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

U. A. Acharya, A. Adare, C. Aidala +332

The measurement of the direct-photon spectrum from Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV is presented by the PHENIX collaboration using the external-photon-conversion te…

nucl-ex2022★ 3 cited

Charm- and Bottom-Quark Production in Au $+$ Au Collisions at $s_{_{N N}}$ = 200 GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +342

The invariant yield of electrons from open-heavy-flavor decays for $1 < p_{T} < 8$ GeV/ $c$ at midrapidity $∣ y ∣ < 0.35$ in Au $+$ Au collisions at $s_{_{N N}}$ = 200 GeV has been measur…

nucl-ex2022

Low- $p_{T}$ direct-photon production in Au $+$ Au collisions at $s_{_{N N}} = 39$ and 62.4 GeV

N. J. Abdulameer, U. Acharya, A. Adare +431

The measurement of direct photons from Au $+$ Au collisions at $s_{_{N N}} = 39$ and 62.4 GeV in the transverse-momentum range $0.4 < p_{T} < 3$ Gev/ $c$ is presented by the PHENIX coll…

nucl-ex2022

Measurements of second-harmonic Fourier coefficients from azimuthal anisotropies in $p$ $+$ $p$ , $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV

N. J. Abdulameer, U. Acharya, A. Adare +389

Recently, the PHENIX Collaboration has published second- and third-harmonic Fourier coefficients $v_{2}$ and $v_{3}$ for midrapidity ( $∣ η ∣ < 0.35$ ) charged hadrons in 0\%--5\% central $p…

Elliptic flow of π0 mesons in Cu+Au collisions at sNN​​​=200 GeV and U+U at sNN​​​=193 GeV

Measurement of isolated prompt photon production in p+p collisions at s​=200 GeV with the sPHENIX detector

Measurement of dijet transverse momentum imbalance and azimuthal acoplanarity in p+p collisions at s​=200 GeV with the sPHENIX detector

Transverse single-spin asymmetry of forward η mesons in p↑+p collisions at s​=200 GeV

Cross sections of η mesons in p+p collisions at forward rapidity at s​=500 GeV and central rapidity at s​=510 GeV

Low-mass vector-meson production at forward rapidity in p+p and Au+Au collisions at sNN​​​=200~GeV

Azimuthal anisotropy of direct photons in Au+Au collisions at sNN​​​=200 GeV

Measurement of the transverse energy density in Au+Au collisions at sNN​​=200 GeV with the sPHENIX detector

Measurement of charged hadron multiplicity in Au+Au collisions at sNN​​=200 GeV with the sPHENIX detector

Measurement of elliptic flow of J/ψ in sNN​​​=200 GeV Au+Au collisions at forward rapidity

Multiplicity dependent J/ψ and ψ(2S) production at forward and backward rapidity in p+p collisions at s​=200 GeV

Centrality dependence of Lévy-stable two-pion Bose-Einstein correlations in sNN​​​=200 GeV Au+Au collisions

Jet modification via π0-hadron correlations in Au+Au collisions at sNN​​​=200 GeV

Identified charged-hadron production in p+Al, 3He+Au, and Cu+Au collisions at sNN​​​=200 GeV and in U+U collisions at sNN​​​=193 GeV

Artificial Intelligence for the Electron Ion Collider (AI4EIC)

Disentangling centrality bias and final-state effects in the production of high-pT​ π0 using direct γ in d+Au collisions at sNN​​​=200 GeV

Transverse single-spin asymmetry of charged hadrons at forward and backward rapidity in polarized p+p, p+Al, and p+Au collisions at sNN​​=200 GeV}

Transverse single-spin asymmetry of midrapidity π0 and η mesons in p+Au and p+Al collisions at sNN​​​= 200 GeV

Measurement of ϕ-meson production in Cu+Au at sNN​​​=200 GeV and U+U at sNN​​​=193 GeV

Improving constraints on gluon spin-momentum correlations in transversely polarized protons via midrapidity open-heavy-flavor electrons in p↑+p collisions at s​=200 GeV

Nonprompt direct-photon production in Au+Au collisions at sNN​​​=200 GeV

Charm- and Bottom-Quark Production in Au+Au Collisions at sNN​​​ = 200 GeV

Low-pT​ direct-photon production in Au+Au collisions at sNN​​​=39 and 62.4 GeV

Measurements of second-harmonic Fourier coefficients from azimuthal anisotropies in p+p, p+Au, d+Au, and 3He+Au collisions at sNN​​​=200 GeV

Elliptic flow of $π^{0}$ mesons in Cu $+$ Au collisions at $s_{_{N N}} = 200$ GeV and U $+$ U at $s_{_{N N}} = 193$ GeV

Measurement of isolated prompt photon production in $p$ + $p$ collisions at $s = 200$ GeV with the sPHENIX detector

Measurement of dijet transverse momentum imbalance and azimuthal acoplanarity in $p$ + $p$ collisions at $s = 200$ GeV with the sPHENIX detector

Transverse single-spin asymmetry of forward $η$ mesons in $p^{↑} + p$ collisions at $s = 200$ GeV

Cross sections of $η$ mesons in $p$ $+$ $p$ collisions at forward rapidity at $s = 500$ GeV and central rapidity at $s = 510$ GeV

Low-mass vector-meson production at forward rapidity in $p$ $+$ $p$ and Au $+$ Au collisions at $s_{_{N N}} = 200$ ~GeV

Azimuthal anisotropy of direct photons in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

Measurement of the transverse energy density in Au+Au collisions at $s_{N N} = 200$ GeV with the sPHENIX detector

Measurement of charged hadron multiplicity in Au+Au collisions at $s_{NN} = 200$ GeV with the sPHENIX detector

Measurement of elliptic flow of J $/ ψ$ in $s_{_{N N}} = 200$ GeV Au $+$ Au collisions at forward rapidity

Multiplicity dependent $J / ψ$ and $ψ (2 S)$ production at forward and backward rapidity in $p$ $+$ $p$ collisions at $s = 200$ GeV

Centrality dependence of Lévy-stable two-pion Bose-Einstein correlations in $s_{_{N N}} = 200$ GeV Au $+$ Au collisions

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

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

Disentangling centrality bias and final-state effects in the production of high- $p_{T}$ $π^{0}$ using direct $γ$ in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

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

Transverse single-spin asymmetry of midrapidity $π^{0}$ and $η$ mesons in $p$ +Au and $p$ +Al collisions at $s_{_{N N}} =$ 200 GeV

Measurement of $ϕ$ -meson production in Cu $+$ Au at $s_{_{N N}} = 200$ GeV and U $+$ U at $s_{_{N N}} = 193$ GeV

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

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

Charm- and Bottom-Quark Production in Au $+$ Au Collisions at $s_{_{N N}}$ = 200 GeV

Low- $p_{T}$ direct-photon production in Au $+$ Au collisions at $s_{_{N N}} = 39$ and 62.4 GeV

Measurements of second-harmonic Fourier coefficients from azimuthal anisotropies in $p$ $+$ $p$ , $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV