N. Novitzky

Measurement of $I ¨ $ -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 $I ¨ $ -meson production in asymmetric Cu $+$ Au collisions at $s_{_{N N}}$ =200 GeV…

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…

Nonperturbative transverse momentum broadening in dihadron angular correlations in $s_{N N} = 200$ GeV proton-nucleus collisions

C. Aidala, Y. Akiba, M. Alfred +296

The PHENIX collaboration has measured high- $p_{T}$ dihadron correlations in $p$ $+$ $p$ , $p$ $+$ Al, and $p$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV. The correlations arise from in…

hep-ph2023

The Present and Future of QCD

P. Achenbach, D. Adhikari, A. Afanasev +400

This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclea…

Measurements of mass-dependent azimuthal anisotropy in central $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +349

We present measurements of the transverse-momentum dependence of elliptic flow $v_{2}$ for identified pions and (anti)protons at midrapidity ( $∣ I^\cdot ∣ < 0.35$ ), in 0%--5% central $p$ $+$ Au…

Disentangling centrality bias and final-state effects in the production of high- $p_{T}$ $I ¨ ^{0}$ using direct $I^^{3}$ 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 $I^^{3}$ and $I ¨ ^{0}$ in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV over a $p_{T}$ range of 7.5 to 18 GeV/ $c$ …

$I ¨ $ meson production in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

PHENIX Collaboration, A. Adare, C. Aidala +482

The PHENIX experiment has measured $I ¨ $ meson production in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV using the dimuon and dielectron decay channels. The $I ¨ $ meson is meas…

physics.ins-det2024

A Large-Scale Pad-Sensor Based Prototype of the Silicon Tungsten Electromagnetic Calorimeter for the Forward Direction in ALICE at LHC

R. G. E. Barthel, T. Chujo, T. Hachiya +21

We constructed a large-scale electromagnetic calorimeter prototype as a part of the Forward Calorimeter upgrade project (FoCal) for the ALICE experiment at the Large Hadron Collide…

Nonperturbative transverse-momentum-dependent effects in dihadron and direct photon-hadron angular correlations in $p + p$ collisions at $s = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +291

Dihadron and isolated direct photon-hadron angular correlations are measured in $p$ $+$ $p$ collisions at $s = 200$ GeV. The correlations are sensitive to nonperturbative initia…

Heavy-quark production and elliptic flow in Au $+$ Au collisions at $s_{_{N N}} = 62.4$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +366

We present measurements of electrons and positrons from the semileptonic decays of heavy-flavor hadrons at midrapidity ( $∣ y ∣ <$ 0.35) in Au $+$ Au collisions at $\sqrt{s_{_{NN}}}=62.4…

An Upgrade Proposal from the PHENIX Collaboration

A. Adare, S. Afanasiev, C. Aidala +473

In this document the PHENIX collaboration proposes a major upgrade to the PHENIX detector at the Relativistic Heavy Ion Collider. This upgrade, sPHENIX, enables an extremely rich j…

Nuclear dependence of the transverse-single-spin asymmetry for forward neutron production in polarized $p$ $+$ $A$ collisions at $s_{_{N N}} = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +312

During 2015 the Relativistic Heavy Ion Collider (RHIC) provided collisions of transversely polarized protons with Au and Al nuclei for the first time, enabling the exploration of t…

Single-spin asymmetry of $J / I ¨ $ production in $p$ $+$ $p$ , $p$ $+$ Al, and $p$ $+$ Au collisions with transversely polarized proton beams at $s_{_{N N}} = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +289

We report the transverse single-spin asymmetries of $J / I ¨ $ production at forward and backward rapidity, $1.2 < ∣ y ∣ < 2.2$ , as a function of $J / I ¨ $ transverse momentum ( $p_{T}$ ) and Feynm…

Systematic study of nuclear effects in $p$ $+$ Al, $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV using $I ¨ ^{0}$ production

U. A. Acharya, A. Adare, C. Aidala +550

The PHENIX collaboration presents a systematic study of $I ¨ ^{0}$ production from $p$ $+$ $p$ , $p$ $+$ Al, $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV.…

Production of $I ¨ ^{0}$ and $I^\cdot$ mesons in U $+$ U collisions at $s_{_{N N}} = 192$ GeV

U. Acharya, C. Aidala, N. N. Ajitanand +399

The PHENIX experiment at the Relativistic Heavy Ion Collider measured $I ¨ ^{0}$ and $I^\cdot$ mesons at midrapidity in U $+$ U collisions at $s_{_{N N}} = 192$ GeV in a wide transverse m…

Nuclear dependence of the transverse single-spin asymmetry in the production of charged hadrons at forward rapidity in polarized $p + p$ , $p +$ Al, and $p +$ Au collisions at $s_{_{N N}} = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +300

We report on the nuclear dependence of transverse single-spin asymmetries (TSSAs) in the production of positively-charged hadrons in polarized $p^{↑} + p$ , $p^{↑} +$ Al a…

Low-momentum direct photon measurement in Cu $+$ Cu collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +447

We have measured direct photons for $p_{T} < 5$ GeV/ $c$ in minimum bias and 0\%--40\% most central events at midrapidity for Cu $+$ Cu collisions at $s_{_{N N}} = 200$ GeV. The $e^{+…

physics.ins-det2020

Design and Performance of a Silicon Tungsten Calorimeter Prototype Module and the Associated Readout

T. Awes, C. L. Britton, T. Chujo +41

We describe the details of a silicon-tungsten prototype electromagnetic calorimeter module and associated readout electronics. Detector performance for this prototype has been meas…

Cross section and longitudinal single-spin asymmetry $A_{L}$ for forward $W^{\pm} \to I^¼^{\pm} I^½$ production in polarized $p$ $+$ $p$ collisions at $s = 510$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +426

We have measured the cross section and single spin asymmetries from forward $W^{\pm} \to I^¼^{\pm} I^½$ production in longitudinally polarized $p$ $+$ $p$ collisions at $\sqrt{s}=…

Beam-energy and system-size dependence of the space-time extent of the pion emission source produced in heavy ion collisions

A. Adare, S. Afanasiev, C. Aidala +619

Two-pion interferometry measurements are used to extract the Gaussian radii $R_{out}$ , $R_{side}$ , and $R_{long}$ , of the pion emission sources produced in Cu $+$ Cu and…

Measurement of elliptic flow of J $/ I ¨ $ 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 $/ I ¨ $ at forward rapidity ( $1.2 < ∣ I^\cdot ∣ < 2.2$ ) in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV at the Relativistic H…

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

C. Aidala, Y. Akiba, M. Alfred +316

The experimental study of the collisions of heavy nuclei at relativistic energies has established the properties of the quark-gluon plasma (QGP), a state of hot, dense nuclear matt…

Azimuthally anisotropic emission of low-momentum direct photons in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +549

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured 2nd and 3rd order Fourier coefficients of the azimuthal distributions of direct photons emitted at midrapi…

nucl-ex2012

Medium modification of jet fragmentation in Au+Au collisions at sqrt(s_NN)=200 GeV measured in direct photon-hadron correlations

A. Adare, S. Afanasiev, C. Aidala +559

The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV. The p_T of the photon is an excellent approxima…

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 ( $∣ I^\cdot ∣ < 0.35$ ) charged hadrons in 0\%--5\% central $…

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 ( $I ¨ ^{\pm}$ , $K^{\pm}$ , $p$ , $p ˉ$ ) production at midrapidity in $p$ $+$ Al, $^{3}$ He $+$ Au, Cu $+$ Au…

Transverse single-spin asymmetry of midrapidity $I ¨ ^{0}$ and $I^\cdot$ 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…

Polarization and cross section of midrapidity J/ $I ¨ $ production in proton-proton collisions at $s = 510$ GeV

U. Acharya, A. Adare, C. Aidala +347

The PHENIX experiment has measured the spin alignment for inclusive $J / I ¨ \to e^{+} e^{-}$ decays in $p$ + $p$ collisions at $s = 510$ GeV at midrapidity. The angular dist…

Nuclear-modification factor of charged hadrons at forward and backward rapidity in $p$ $+$ Al and $p$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +300

The PHENIX experiment has studied nuclear effects in $p$ $+$ Al and $p$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV on charged hadron production at forward rapidity ( $1.4 < I^\cdot < 2.4$ ,…

Measurements of elliptic and triangular flow in high-multiplicity $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +627

We present the first measurement of elliptic ( $v_{2}$ ) and triangular ( $v_{3}$ ) flow in high-multiplicity $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV. Two-particle correlati…

Comparison of the space-time extent of the emission source in $d$ $+$ Au and Au $+$ Au collisions at $s_{N N} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +519

Two-pion interferometry measurements in $d$ $+$ Au and Au $+$ Au collisions at $s_{N N} = 200$ GeV are used to extract and compare the Gaussian source radii R $_{out}$ , R$_{\rm…

Measurement of charm and bottom production from semileptonic hadron decays in $p$ $+$ $p$ collisions at $s_{N N} = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +299

Measurements of the differential production of electrons from open-heavy-flavor hadrons with charm- and bottom-quark content in $p$ $+$ $p$ collisions at $s = 200$ GeV are prese…

Cross section and transverse single-spin asymmetry of muons from open heavy-flavor decays in polarized $p$ + $p$ collisions at $s = 200$ GeV

C. Aidala, N. N. Ajitanand, Y. Akiba +433

The cross section and transverse single-spin asymmetries of $I^¼^{-}$ and $I^¼^{+}$ from open heavy-flavor decays in polarized $p$ + $p$ collisions at $s = 200$ GeV were measured…

nucl-ex2012

J/psi suppression at forward rapidity in Au+Au collisions at sqrt(s_NN)=39 and 62.4 GeV

A. Adare, C. Aidala, N. N. Ajitanand +361

We present measurements of the J/psi invariant yields in sqrt(s_NN)=39 and 62.4 GeV Au+Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function…

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…

hep-ex2022

Transverse-single-spin asymmetries of charged pions at midrapidity in transversely polarized $p + p$ collisions at $s = 200$ GeV

U. A. Acharya, C. Aidala, Y. Akiba +307

In 2015, the PHENIX collaboration has measured single-spin asymmetries for charged pions in transversely polarized proton-proton collisions at the center of mass energy of $\sqrt{s…

hep-ex2025

Measurement of inclusive jet cross section and substructure in $p$ $+$ $p$ collisions at $s_{_{N N}} = 200$ GeV

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +443

The jet cross-section and jet-substructure observables in $p$ $+$ $p$ collisions at $s = 200$ GeV were measured by the PHENIX Collaboration at the Relativistic Heavy Ion Collide…

Production of $I ¨ ^{0}$ and $I^\cdot$ mesons in Cu $+$ Au collisions at $s_{_{N N}}$ =200 GeV

C. Aidala, N. N. Ajitanand, Y. Akiba +401

Production of $I ¨ ^{0}$ and $I^\cdot$ mesons has been measured at midrapidity in Cu $+$ Au collisions at $s_{_{N N}}$ =200 GeV. Measurements were performed in $I ¨ ^{0} (I^\cdot) \to I^^{3} I^^{3}$ …

Hot and Cold QCD White Paper from ALICE-USA: Input for 2023 U.S. Long Range Plan for Nuclear Science

N. Alizadehvandchali, N. Apadula, M. Arslandok +80

The ALICE-USA collaboration presents its plans for the 2023 U.S. Long Range Plan for Nuclear Science.

Measurement of two-particle correlations with respect to second- and third-order event planes in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +453

We present measurements of azimuthal correlations of charged hadron pairs in $s_{_{N N}} = 200$ GeV Au $+$ Au collisions for the trigger and associated particle transverse-moment…

Single electron yields from semileptonic charm and bottom hadron decays in Au $+$ Au collisions at $s_{N N} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +429

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy-flavor production in minimum bias Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV via the y…

Study of $I ¨ $ -meson production in $p$ $+$ Al, $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV

U. Acharya, A. Adare, C. Aidala +367

Small nuclear collisions are mainly sensitive to cold-nuclear-matter effects; however, the collective behavior observed in these collisions shows a hint of hot-nuclear-matter effec…

Jet modification via $I ¨ ^{0}$ -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…

Measurements of $I^¼ I^¼$ pairs from open heavy flavor and Drell-Yan in $p + p$ collisions at $s = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +290

PHENIX reports differential cross sections of $I^¼ I^¼$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p$ $+$ $p$ collisions at $\sqrt{s…

hep-ex2021

Probing gluon spin-momentum correlations in transversely polarized protons through midrapidity isolated direct photons in $p^{↑} + p$ collisions at $s = 200$ GeV

U. A. Acharya, C. Aidala, Y. Akiba +308

Studying spin-momentum correlations in hadronic collisions offers a glimpse into a three-dimensional picture of proton structure. The transverse single-spin asymmetry for midrapidi…

Centrality-dependent modification of jet-production rates in deuteron-gold collisions at $s_{N N}$ =200 GeV

A. Adare, C. Aidala, N. N. Ajitanand +481

Jet production rates are measured in $p$ $+$ $p$ and $d$ $+$ Au collisions at $s_{N N}$ =200 GeV recorded in 2008 with the PHENIX detector at the Relativistic Heavy Ion Collider.…

Measurements at forward rapidity of elliptic flow of charged hadrons and open-heavy-flavor muons in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

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

We present the first forward-rapidity measurements of elliptic anisotropy of open-heavy-flavor muons at the BNL Relativistic Heavy Ion Collider. The measurements are based on data…

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…

Beam-energy and centrality dependence of direct-photon emission from ultra-relativistic heavy-ion collisions

A. Adare, S. Afanasiev, C. Aidala +669

The PHENIX collaboration presents first measurements of low-momentum ( $0.4 < p_{T} < 3$ GeV/ $c$ ) direct-photon yields from Au $+$ Au collisions at $s_{_{N N}}$ =39 and 62.4 GeV. For b…

Transverse energy production and charged-particle multiplicity at midrapidity in various systems from $s_{N N} = 7.7$ to 200 GeV

A. Adare, S. Afanasiev, C. Aidala +702

Measurements of midrapidity charged particle multiplicity distributions, $d N_{ch} / d I^\cdot$ , and midrapidity transverse-energy distributions, $d E_{T} / d I^\cdot$ , are presented for a variety…

Concept for an Electron Ion Collider (EIC) detector built around the BaBar solenoid

PHENIX Collaboration, A. Adare, C. Aidala +304

The PHENIX collaboration presents here a concept for a detector at a future Electron Ion Collider (EIC). The EIC detector proposed here, referred to as ePHENIX, will have excellent…

Measurement of $J / I ¨ $ at forward and backward rapidity in $p$ + $p$ , $p$ $+ A$ l, $p$ $+ A$ u, and $^{3}$ He+Au collisions at $s_{_{N N}} = 200 GeV$

U. A. Acharya, A. Adare, C. Aidala +358

Charmonium is a valuable probe in heavy-ion collisions to study the properties of the quark gluon plasma, and is also an interesting probe in small collision systems to study cold…

physics.ins-det2024

Performance of the electromagnetic and hadronic prototype segments of the ALICE Forward Calorimeter

M. Aehle, J. Alme, C. Arata +74

We present the performance of a full-length prototype of the ALICE Forward Calorimeter (FoCal). The detector is composed of a silicon-tungsten electromagnetic sampling calorimeter…

Measurement of $K_{S}^{0}$ and $K^{* 0}$ in $p$ $+$ $p$ , $d$ $+$ Au, and Cu $+$ Cu collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +587

The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of $K_{S}^{0}$ and $K^{* 0}$ meson production at midrapidity in $p$ $+$ $p$ , $d$ $+$ Au, and Cu…

Centrality dependence of LÃ©vy-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…

hep-ex2021

Transverse momentum dependent forward neutron single spin asymmetries in transversely polarized $p$ $+$ $p$ collisions at $s = 200$ GeV

U. A. Acharya, C. Aidala, Y. Akiba +311

In 2015, the PHENIX collaboration has measured very forward ( $I^\cdot > 6.8$ ) single-spin asymmetries of inclusive neutrons in transversely polarized proton-proton and proton-nucleus coll…

hep-ex2024

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

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

The $J / I ¨ $ and $I ¨ (2 S)$ 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…

Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at $s_{_{N N}}$ from 62.4 GeV to 2.76 TeV

A. Adare, S. Afanasiev, C. Aidala +627

Measurements of the fractional momentum loss ( $S_{loss} \equiv I^´ p_{T} / p_{T}$ ) of high-transverse-momentum-identified hadrons in heavy ion collisions are presented. Using $I ¨ ^{0}$ in A…

Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in $p$ $+$ $p$ collisions at $s$ =510 GeV

A. Adare, C. Aidala, N. N. Ajitanand +463

Dihadron and isolated direct photon-hadron angular correlations are measured in $p$ $+$ $p$ collisions at $s = 510$ GeV. Correlations of charged hadrons of $0.7 < p_{T} < 10$ GeV/ $c$ …

nucl-ex2017

B-meson production at forward and backward rapidity in $p$ + $p$ and Cu+Au collisions at $s_{_{N N}}$ =200 GeV

C. Aidala, N. N. Ajitanand, Y. Akiba +456

The fraction of $J / I ¨ $ mesons which come from B-meson decay, $F_{B \to J / I ¨ }$ , is measured for J/ $I ¨ $ rapidity \mbox{ $1.2 < ∣ y ∣ < 2.2$ } and $p_{T} > 0$ in $p$ + $p$ and Cu+A…

Measurement of jet-medium interactions via direct photon-hadron correlations in Au $+$ Au and $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

U. Acharya, A. Adare, S. Afanasiev +574

We present direct photon-hadron correlations in 200 GeV/A Au $+$ Au, $d$ $+$ Au and $p$ $+$ $p$ collisions, for direct photon $p_{T}$ from 5--12 GeV/ $c$ , collected by the PHENIX Collaborat…

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 ( $I ¨ + I ¨ $ and $I ¨ $ ) production through the dimuon decay channel at forward rapidity $…

hep-ex2015

Inclusive cross section and double-helicity asymmetry for $I ¨ ^{0}$ production at midrapidity in $p$ $+$ $p$ collisions at $s = 510$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +410

PHENIX measurements are presented for the cross section and double-helicity asymmetry ( $A_{LL}$ ) in inclusive $I ¨ ^{0}$ production at midrapidity from $p$ $+$ $p$ collisions at $\sqrt{s…

Nuclear matter effects on $J / I ¨ $ production in asymmetric Cu+Au collisions at $s_{_{N N}}$ = 200 GeV

C. Aidala, N. N. Ajitanand, Y. Akiba +346

We report on $J / I ¨ $ production from asymmetric Cu+Au heavy-ion collisions at $s_{_{N N}}$ =200 GeV at the Relativistic Heavy Ion Collider at both forward (Cu-going direction)…

nucl-ex2012

sPHENIX: An Upgrade Concept from the PHENIX Collaboration

A. Adare, C. Aidala, N. N. Ajitanand +423

The PHENIX collaboration presents a concept for a major upgrade to the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). This upgrade, referred to as sPHENIX, brings e…

Angular decay coefficients of $J / I ¨ $ mesons at forward rapidity from $p + p$ collisions at $s = 510$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +387

We report the first measurement of the full angular distribution for inclusive $J / I ¨ \to I^¼^{+} I^¼^{-}$ decays in $p$ $+$ $p$ collisions at $s = 510$ GeV. The measurements…

Systematic study of charged-pion and kaon femtoscopy in Au $+$ Au collisions at $s_{_{N N}}$ =200 GeV

A. Adare, S. Afanasiev, C. Aidala +496

We present a systematic study of charged pion and kaon interferometry in Au $+$ Au collisions at $s_{_{N N}}$ =200 GeV. The kaon mean source radii are found to be larger than pi…

Measurement of $I ¨ (2 S)$ nuclear modification at backward and forward rapidity in $p$ $+$ $p$ , $p$ $+$ Al, and $p$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

U. A. Acharya, C. Aidala, Y. Akiba +313

Suppression of the $J / I ¨ $ nuclear-modification factor has been seen as a trademark signature of final-state effects in large collision systems for decades. In small systems, the nu…

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…

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…

Measurements of directed, elliptic, and triangular flow in Cu $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +401

Measurements of anisotropic flow Fourier coefficients ( $v_{n}$ ) for inclusive charged particles and identified hadrons $I ¨ ^{\pm}$ , $K^{\pm}$ , $p$ , and $p ˉ$ produced at midrapidi…

Centrality dependence of low-momentum direct-photon production in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +477

The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV down to $p_{T} = 0.4$ GeV/ $c$ . Pho…

Measurement of Direct-Photon Cross Section and Double-Helicity Asymmetry at $s = 510$ GeV in $p + p$ Collisions

PHENIX Collaboration, N. J. Abdulameer, U. Acharya +358

We present measurements of the cross section and double-helicity asymmetry $A_{LL}$ of direct-photon production in $p + p$ collisions at $s = 510$ GeV. The measureme…

Pseudorapidity dependence of particle production and elliptic flow in asymmetric nuclear collisions of $p$ $+$ Al, $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +364

Asymmetric nuclear collisions of $p$ $+$ Al, $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au at $s_{_{N N}} = 200$ GeV provide an excellent laboratory for understanding particle production…

Search for dark photons from neutral meson decays in $p$ $+$ $p$ and $d$ $+$ Au collisions at $s_{_{N N}}$ =200 GeV

A. Adare, S. Afanasiev, C. Aidala +577

The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment $(g - 2)_{I^} ¼$ deviates from SM calculations by 3.…

Measurements of double-helicity asymmetries in inclusive $J / I ¨ $ production in longitudinally polarized $p + p$ collisions at $s = 510$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +332

We report the double helicity asymmetry, $A_{LL}^{J / I ¨ }$ , in inclusive $J / I ¨ $ production at forward rapidity as a function of transverse momentum $p_{T}$ and rapidity $∣ y ∣$ . The data…

nucl-ex2017

Measurements of azimuthal anisotropy and charged-particle multiplicity in $d$ $+$ Au collisions at $s_{_{N N}} =$ 200, 62.4, 39, and 19.6 GeV

C. Aidala, Y. Akiba, M. Alfred +243

We present measurements of the elliptic flow, $v_{2}$ , as a function of transverse momentum ( $p_{T}$ ), pseudorapidity ( $I^\cdot$ ), and centrality in $d$ $+$ Au collisions at $\sqrt{s_{_{NN}}}…

$J / I ¨ $ and $I ¨ (2 S)$ production at forward rapidity in $p$ + $p$ collisions at $s = 510$ GeV

U. A. Acharya, A. Adare, C. Aidala +357

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive $J…

Measurements of $B \to J / I ¨ $ at forward rapidity in $p$ $+$ $p$ collisions at $s = 510$ GeV

C. Aidala, N. N. Ajitanand, Y. Akiba +427

We report the first measurement of the fraction of $J / I ¨ $ mesons coming from $B$ -meson decay ( $F_{B \to J / I ¨ }$ ) in $p$ + $p$ collisions at $s =$ 510 GeV. The measuremen…

hep-ex2025

Transverse single-spin asymmetry of forward $I^\cdot$ 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 $I^\cdot$ -meson transverse single-spin asym…

hep-ex2012

Inclusive J/psi production in pp collisions at sqrt(s) = 2.76 TeV

ALICE Collaboration, B. Abelev, J. Adam +966

The ALICE Collaboration has measured inclusive J/psi production in pp collisions at a center of mass energy sqrt(s)=2.76 TeV at the LHC. The results presented in this Letter refer…

Measurements of multiparticle correlations in $d$ $+$ Au collisions at 200, 62.4, 39, and 19.6 GeV and $p$ $+$ Au collisions at 200 GeV and implications for collective behavior

C. Aidala, Y. Akiba, M. Alfred +314

Recently, multiparticle-correlation measurements of relativistic $p / d /^{3}$ He $+$ Au, $p$ $+$ Pb, and even $p$ $+$ $p$ collisions have shown surprising collective signatures. Here we prese…

Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized $p$ $+$ $p$ collisions at $s = 510$ GeV

U. A. Acharya, A. Adare, C. Aidala +357

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, $A_{LL}$ , for charged pions at midrapidity ( $∣ I^\cdot ∣ < 0.35$ ) in long…

physics.ins-det2024

Beam test of n-type Silicon pad array detector at PS CERN

Sawan, M. Bregant, J. L. Bouly +21

This work reports the testing of a Forward Calorimeter (FoCal) prototype based on an n-type Si pad array detector at the CERN PS accelerator. The FoCal is a proposed upgrade in the…

Correlations of $I^¼ I^¼$ , $e I^¼$ , and $ee$ pairs in $p$ + $p$ collisions at $s = 200$ GeV and implications for $c c ˉ$ and $b b ˉ$ production mechanisms

C. Aidala, Y. Akiba, M. Alfred +290

PHENIX has measured the azimuthal correlations of muon pairs from charm and bottom semi-leptonic decays in $p$ + $p$ collisions at $s = 200$ GeV, using a novel analysis techniqu…

nucl-ex2019

Multi-particle azimuthal correlations for extracting event-by-event elliptic and triangular flow in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +319

We present measurements of elliptic and triangular azimuthal anisotropy of charged particles detected at forward rapidity $1 < ∣ I^\cdot ∣ < 3$ in Au $+$ Au collisions at $s_{_{N N}} = 200$ …

Measurement of $I ¨ $ -meson production at forward rapidity in $p$ $+$ $p$ collisions at $s$ =510 GeV and energy dependence of $I ¨ _{I ¨} $ from $s$ =200 GeV to 7 TeV

A. Adare, C. Aidala, N. N. Ajitanand +355

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section of $I ¨ $ (1020)-meson production at forward rapidity in $p$ $+$ $p$ collisions…

Dielectron production in Au $+$ Au collisions at $s_{N N}$ =200 GeV

A. Adare, C. Aidala, N. N. Ajitanand +444

We present measurements of $e^{+} e^{-}$ production at midrapidity in Au $+$ Au collisions at $s_{_{N N}}$ = 200 GeV. The invariant yield is studied within the PHENIX detector accep…

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 +386

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-ex2017

Measurement of long-range angular correlations and azimuthal anisotropies in high-multiplicity $p$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV

C. Aidala, Y. Akiba, M. Alfred +270

We present the first measurements of long-range angular correlations and the transverse momentum dependence of elliptic flow $v_{2}$ in high-multiplicity $p$ $+$ Au collisions at $\sqr…

Measurement of emission angle anisotropy via long-range angular correlations with high $p_{T}$ hadrons in $d$ $+$ Au and $p$ $+$ $p$ collisions at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +470

We present measurements of two-particle angular correlations between high-transverse-momentum ( $2 < p_{T} < 11$ GeV/ $c$ ) $I ¨ ^{0}$ observed at midrapidity ( $∣ I^\cdot ∣ < 0.35$ ) and particles produc…

Forward $J / I ¨ $ production in U $+$ U collisions at $s_{N N}$ =193 GeV

A. Adare, C. Aidala, N. N. Ajitanand +401

The invariant yields for $J / I ¨ $ production at forward rapidity $(1.2 < ∣ y ∣ < 2.2)$ in U $+$ U collisions at $s_{_{N N}}$ =193 GeV have been measured as a function of collision centr…

nucl-ex2026

ePIC Early Science Report

D. Abbott, N. Abdelrahman, S. Abhijit +781

This Early Science Report from the ePIC Collaboration outlines the compelling physics program achievable during the first years of operation of the Electron-Ion Collider (EIC), pri…

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…

hep-ex2022

Kinematic dependence of azimuthal anisotropies in $p$ $+$ Au, $d$ $+$ Au, $^{3}$ He+Au at $s_{_{N N}}$ = 200 GeV

U. A. Acharya, A. Adare, C. Aidala +378

There is strong evidence for the formation of small droplets of quark-gluon plasma in $p / d /^{3}$ He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) and in $p$ + $p$ /Pb col…

A. Adare, C. Aidala, N. N. Ajitanand +444

We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $s_{_{N N}} = 200$ GeV Au $+$ Au collisions by the PHENIX experiment at the Relat…

hep-ex2022

Transverse single spin asymmetries of forward neutrons in $p$ $+$ $p$ , $p$ $+$ Al, and $p$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV as a function of transverse and longitudinal momenta

U. A. Acharya, C. Aidala, Y. Akiba +308

In 2015 the PHENIX collaboration at the Relativistic Heavy Ion Collider recorded $p$ $+$ $p$ , $p$ $+$ Al, and $p$ $+$ Au collision data at center of mass energies of $\sqrt{s_{_{NN}}}=20…

Hot QCD White Paper

M. Arslandok, S. A. Bass, A. A. Baty +170

Hot QCD physics studies the nuclear strong force under extreme temperature and densities. Experimentally these conditions are achieved via high-energy collisions of heavy ions at t…