G. D. Westfall

activity

20002023

most citedExperimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions

3.4k citations · 14.8k across the 80 of their papers we have counts for

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73 papers · 1 filter

nucl-ex2019★ 46 cited

Charge-dependent pair correlations relative to a third particle in $p$ +Au and $d$ +Au collisions at RHIC

STAR collaboration

Quark interactions with topological gluon configurations can induce chirality imbalance and local parity violation in quantum chromodynamics. This can lead to electric charge separ…

nucl-ex2019★ 1 cited

Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at $s_{_{NN}} = 200$ GeV

STAR Collaboration

High transverse momentum ( $p_{T}$ ) particle production is suppressed due to parton (jet) energy loss in the hot dense medium created in relativistic heavy-ion collisions. Redistribut…

nucl-ex2019★ 237 cited

Polarization of $Λ$ ( $Λ ˉ$ ) hyperons along the beam direction in Au+Au collisions at $s_{_{N N}}$ = 200 GeV

STAR Collaboration, J. Adam, L. Adamczyk +343

The $Λ$ ( $Λ ˉ$ ) hyperon polarization along the beam direction has been measured for the first time in Au+Au collisions at $s_{_{N N}}$ = 200 GeV. The polarization dependenc…

nucl-ex2019★ 96 cited

First observation of the directed flow of $D^{0}$ and $D^{0}$ in Au+Au collisions at $s_{NN}$ = 200~GeV

STAR Collaboration, J. Adam, L. Adamczyk +342

We report the first measurement of rapidity-odd directed flow ( $v_{1}$ ) for $D^{0}$ and $D^{0}$ mesons at mid-rapidity ( $∣ y ∣ < 0.8$ ) in Au+Au collisions at $\sqrt{s_{\rm…

nucl-ex2017★ 36 cited

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

STAR Collaboration, L. Adamczyk, J. R. Adams +345

The azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at $s_{_{N N}}$ = 200 GeV for harmonics $n…

nucl-ex2017★ 69 cited

Measurement of hyper triton lifetime in Au + Au collisions at the Relativistic Heavy-Ion Collider

The STAR Collaboration

A precise measurement of the hypertriton lifetime is presented. In this letter, the mesonic decay modes $_{Λ}^{3} H \to^{3} He + π^{-}$ and $\mathrm{{^3_Λ}H \rightarrow d…

nucl-ex2017★ 62 cited

Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at $s_{_{NN}}$ = 7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

STAR Collaboration, L. Adamczyk, J. R. Adams +338

We report measurements of the nuclear modification factor, $R_{CP}$ , for charged hadrons as well as identified $π^{+ (-)}$ , $K^{+ (-)}$ , and $p (p)$ for Au+Au col…

nucl-ex2017★ 102 cited

Measurements of jet quenching with semi-inclusive hadron+jet distributions in Au+Au collisions at $s_{N N}$ = 200 GeV

STAR Collaboration, L. Adamczyk, J. K. Adkins +341

The STAR Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum hadron trigger, in central and per…

nucl-ex2017★ 633 cited

Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program

STAR Collaboration, L. Adamczyk, J. K. Adkins +340

We present measurements of bulk properties of the matter produced in Au+Au collisions at $s_{N N} =$ 7.7, 11.5, 19.6, 27, and 39 GeV using identified hadrons ( $π^{\pm}$ , $K^{\pm}$ …

nucl-ex2015★ 120 cited

Measurement of interaction between antiprotons

STAR Collaboration

One of the primary goals of nuclear physics is to understand the force between nucleons, which is a necessary step for understanding the structure of nuclei and how nuclei interact…

nucl-ex2014★ 12 cited

Dielectron Azimuthal Anisotropy at mid-rapidity in Au+Au collisions at $s_{_{N N}} = 200$ GeV

STAR Collaboration

We report on the first measurement of the azimuthal anisotropy ( $v_{2}$ ) of dielectrons ( $e^{+} e^{-}$ pairs) at mid-rapidity from $s_{_{N N}} = 200$ GeV Au+Au collisions with t…

nucl-ex2014★ 317 cited

Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC

STAR Collaboration

We report the first measurements of the moments -- mean ( $M$ ), variance ( $σ^{2}$ ), skewness ( $S$ ) and kurtosis ( $κ$ ) -- of the net-charge multiplicity distributions at mid-rapidity…

nucl-ex2013★ 13 cited

$J / ψ$ polarization in p+p collisions at $s$ = 200 GeV in STAR

STAR Collaboration, L. Adamczyk, J. K. Adkins +353

We report on a polarization measurement of inclusive $J / ψ$ mesons in the di-electron decay channel at mid-rapidity at 2 $< p_{T} <$ 6 GeV/ $c$ in $p + p$ collisions at $s$ = 200…

nucl-ex2013★ 105 cited

Measurement of Charge Multiplicity Asymmetry Correlations in High Energy Nucleus-Nucleus Collisions at 200 GeV

STAR Collaboration, L. Adamczyk, J. K. Adkins +360

A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au+Au collisions at 200 GeV. The charge multiplicity a…

nucl-ex2013★ 176 cited

Elliptic flow of identified hadrons in Au+Au collisions at $s_{N N} =$ 7.7--62.4 GeV

L. Adamczyk, J. K. Adkins, G. Agakishiev +362

Measurements of the elliptic flow, $v_{2}$ , of identified hadrons ( $π^{\pm}$ , $K^{\pm}$ , $K_{s}^{0}$ , $p$ , $p ˉ$ , $ϕ$ , $Λ$ , $Λ ˉ$ , $Ξ^{-}$ , $Ξ ˉ^{+}$ , $Ω^{-}$ , $Ω ˉ^{+}$ )…

nucl-ex2012★ 57 cited

Measurement of J/{psi} Azimuthal Anisotropy in Au+Au Collisions at {sqrt{s_{NN}}} = 200 GeV

STAR Collaboration

The measurement of J/{psi} azimuthal anisotropy is presented as a function of transverse momentum for different centralities in Au+Au collisions at {sqrt{s_{NN}}} = 200 GeV. The me…

nucl-ex2012★ 103 cited

J/ $ψ$ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV

STAR Collaboration

We report $J / ψ$ spectra for transverse momenta $p_{T}$ > 5 GeV/ $c$ at mid-rapidity in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV.The inclusive $J / ψ$ spectrum and the extracted…

nucl-ex2012★ 142 cited

Measurements of $D^{0}$ and $D^{*}$ Production in $p$ + $p$ Collisions at $s$ = 200 GeV

STAR Collaboration, L. Adamczyk, G. Agakishiev +368

We report measurements of charmed-hadron ( $D^{0}$ , $D^{*}$ ) production cross sections at mid-rapidity in $p$ + $p$ collisions at a center-of-mass energy of 200 GeV by the STAR expe…

nucl-ex2011★ 51 cited

Energy and system-size dependence of two- and four-particle $v_{2}$ measurements in heavy-ion collisions at RHIC and their implications on flow fluctuations and nonflow

The STAR Collaboration, G. Agakishiev, M. M. Aggarwal +344

We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants $v_{2}$ ( $v_{2} {2}$ and $v_{2} {4}$ ) for Au+Au and Cu+Cu collisions at center of…

nucl-ex2011★ 39 cited

Directed Flow of Identified Particles in Au + Au Collisions at $\sqrtsNN = 200$ GeV at RHIC

the STAR Collaboration

STAR's measurements of directed flow ( $v_{1}$ ) around midrapidity for $π^{\pm}$ , K $^{\pm}$ , K $_{S}^{0}$ , $p$ and $p ˉ$ in Au + Au collisions at $\sqrtsNN = 200$ GeV are presented. A…

nucl-ex2011★ 32 cited

System size and energy dependence of near-side di-hadron correlations

STAR Collaboration, G. Agakishiev, M. M. Aggarwal +353

Two-particle azimuthal ( $Δ ϕ$ ) and pseudorapidity ( $Δ η$ ) correlations using a trigger particle with large transverse momentum ( $p_{T}$ ) in $d$ +Au, Cu+Cu and Au+Au collisions at $\sqrt…

nucl-ex2011★ 100 cited

Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at $s_{_{N N}} = 200$ GeV

STAR Collaboration

We report transverse momentum ( $p_{T} \leq 15$ GeV/ $c$ ) spectra of $π^{\pm}$ , $K^{\pm}$ , $p$ , $p ˉ$ , $K_{S}^{0}$ , and $ρ^{0}$ at mid-rapidity in p+p and Au+Au collisions at $\sq…

nucl-ex2011★ 29 cited

Directed and elliptic flow of charged particles in Cu+Cu collisions at $s_{NN} =$ 22.4 GeV

G. Agakishiev, M. M. Aggarwal, Z. Ahammed +366

This paper reports results for directed flow $v_{1}$ and elliptic flow $v_{2}$ of charged particles in Cu+Cu collisions at $s_{N N} =$ 22.4 GeV at the Relativistic Heavy Ion C…

nucl-ex2011★ 36 cited

$ρ^{0}$ Photoproduction in AuAu Collisions at $s_{N N}$ =62.4 GeV with STAR

G. Agakishiev

Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. Th…

Charge-dependent pair correlations relative to a third particle in p+Au and d+Au collisions at RHIC

Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at sNN​​​=200 GeV

Polarization of Λ (Λˉ) hyperons along the beam direction in Au+Au collisions at sNN​​​ = 200 GeV

First observation of the directed flow of D0 and D0 in Au+Au collisions at sNN​​ = 200~GeV

Azimuthal anisotropy in Cu+Au collisions at sNN​​​ = 200 GeV

Measurement of hyper triton lifetime in Au + Au collisions at the Relativistic Heavy-Ion Collider

Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN​​​ = 7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

Measurements of jet quenching with semi-inclusive hadron+jet distributions in Au+Au collisions at sNN​​ = 200 GeV

Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program

Measurement of interaction between antiprotons

Dielectron Azimuthal Anisotropy at mid-rapidity in Au+Au collisions at sNN​​​=200 GeV

Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC

J/ψ polarization in p+p collisions at s​ = 200 GeV in STAR

Measurement of Charge Multiplicity Asymmetry Correlations in High Energy Nucleus-Nucleus Collisions at 200 GeV

Elliptic flow of identified hadrons in Au+Au collisions at sNN​​= 7.7--62.4 GeV

Measurement of J/{psi} Azimuthal Anisotropy in Au+Au Collisions at {sqrt{s_{NN}}} = 200 GeV

J/ψ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV

Measurements of D0 and D∗ Production in p + p Collisions at s​ = 200 GeV

Energy and system-size dependence of two- and four-particle v2​ measurements in heavy-ion collisions at RHIC and their implications on flow fluctuations and nonflow

Directed Flow of Identified Particles in Au + Au Collisions at $\sqrtsNN = 200$ GeV at RHIC

System size and energy dependence of near-side di-hadron correlations

Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at sNN​​​=200 GeV

Directed and elliptic flow of charged particles in Cu+Cu collisions at sNN​​= 22.4 GeV

ρ0 Photoproduction in AuAu Collisions at sNN​​=62.4 GeV with STAR

Charge-dependent pair correlations relative to a third particle in $p$ +Au and $d$ +Au collisions at RHIC

Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at $s_{_{NN}} = 200$ GeV

Polarization of $Λ$ ( $Λ ˉ$ ) hyperons along the beam direction in Au+Au collisions at $s_{_{N N}}$ = 200 GeV

First observation of the directed flow of $D^{0}$ and $D^{0}$ in Au+Au collisions at $s_{NN}$ = 200~GeV

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

Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at $s_{_{NN}}$ = 7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

Measurements of jet quenching with semi-inclusive hadron+jet distributions in Au+Au collisions at $s_{N N}$ = 200 GeV

Dielectron Azimuthal Anisotropy at mid-rapidity in Au+Au collisions at $s_{_{N N}} = 200$ GeV

$J / ψ$ polarization in p+p collisions at $s$ = 200 GeV in STAR

Elliptic flow of identified hadrons in Au+Au collisions at $s_{N N} =$ 7.7--62.4 GeV

J/ $ψ$ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV

Measurements of $D^{0}$ and $D^{*}$ Production in $p$ + $p$ Collisions at $s$ = 200 GeV

Energy and system-size dependence of two- and four-particle $v_{2}$ measurements in heavy-ion collisions at RHIC and their implications on flow fluctuations and nonflow

Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at $s_{_{N N}} = 200$ GeV

Directed and elliptic flow of charged particles in Cu+Cu collisions at $s_{NN} =$ 22.4 GeV

$ρ^{0}$ Photoproduction in AuAu Collisions at $s_{N N}$ =62.4 GeV with STAR