J. Alexander

activity

19942020

most citedBranching Fraction and Photon Energy Spectrum b -> s gamma

428 citations · 6.9k across the 139 of their papers we have counts for

collaborators

139 papers

hep-ex2020★ 8 cited

Production of $π^{0}$ and $η$ 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 $π^{0}$ and $η$ mesons at midrapidity in U $+$ U collisions at $s_{_{N N}} = 192$ GeV in a wide transverse mom…

hep-ex2018★ 20 cited

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^{+…

hep-ex2018★ 21 cited

Cross section and longitudinal single-spin asymmetry $A_{L}$ for forward $W^{\pm} \to μ^{\pm} ν$ 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 $W^{\pm} \to μ^{\pm} ν$ production in longitudinally polarized $p$ $+$ $p$ collisions at $\sqrt{s}=51…

hep-ex2017★ 9 cited

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/ $c$ ) $π^{0}$ observed at midrapidity ( $∣ η ∣ < 0.35$ ) and particles produced…

nucl-ex2017★ 53 cited

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

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…

nucl-ex2017★ 11 cited

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

hep-ex2017★ 11 cited

Measurements of $B \to J / ψ$ 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 $J / ψ$ mesons coming from $B$ -meson decay ( $F_{B \to J / ψ}$ ) in $p$ + $p$ collisions at $s =$ 510 GeV. The measurement…

nucl-ex2015★ 39 cited

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 $π^{\pm}$ , $K^{\pm}$ , $p$ , and $p ˉ$ produced at midrapidit…

nucl-ex2015★ 20 cited

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 ( $S_{loss} \equiv δ p_{T} / p_{T}$ ) of high-transverse-momentum-identified hadrons in heavy ion collisions are presented. Using $π^{0}$ in Au$…

nucl-ex2015★ 105 cited

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, $d N_{ch} / d η$ , and midrapidity transverse-energy distributions, $d E_{T} / d η$ , are presented for a variety o…

nucl-ex2015★ 48 cited

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…

physics.acc-ph2015★ 3 cited

Operation of the CESR-TA vertical beam size monitor at $E_{b}$ =4 GeV

J. P. Alexander, C. Conolly, E. Edwards +9

We describe operation of the CESR-TA vertical beam size monitor (xBSM) with $e^{\pm}$ beams with $E_{b}$ =4 GeV. The xBSM measures vertical beam size by imaging synchrotron radiat…

nucl-ex2015★ 15 cited

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

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

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

nucl-ex2015★ 84 cited

Measurement of higher cumulants of net-charge multiplicity distributions in Au $+$ Au collisions at $s_{_{N N}} = 7.7 - 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +509

We report the measurement of cumulants ( $C_{n}, n = 1 \dots 4$ ) of the net-charge distributions measured within pseudorapidity ( $∣ η ∣ < 0.35$ ) in Au $+$ Au collisions at $\sqrt{s_{_{NN}}}=7.…

hep-ex2015★ 40 cited

Measurement of parity-violating spin asymmetries in W $^{\pm}$ production at midrapidity in longitudinally polarized $p$ $+$ $p$ collisions

A. Adare, C. Aidala, N. N. Ajitanand +447

We present measurements from the PHENIX experiment of large parity-violating single spin asymmetries of high transverse momentum electrons and positrons from $W^{\pm} / Z$ decays, prod…

nucl-ex2015★ 32 cited

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…

nucl-ex2015★ 64 cited

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…

nucl-ex2014★ 34 cited

Systematic Study of Azimuthal Anisotropy in Cu $+$ Cu and Au $+$ Au Collisions at $s_{_{N N}} = 62.4$ and 200 GeV

A. Adare, S. Afanasiev, C. Aidala +421

We have studied the dependence of azimuthal anisotropy $v_{2}$ for inclusive and identified charged hadrons in Au $+$ Au and Cu $+$ Cu collisions on collision energy, species, and centra…

hep-ex2014

Inclusive cross sections, charge ratio and double-helicity asymmetries for $π^{+}$ and $π^{-}$ production in $p$ $+$ $p$ collisions at $s$ =200 GeV

A. Adare, C. Aidala, N. N. Ajitanand +378

We present the midrapidity charged pion invariant cross sections and the ratio of $π^{-}$ -to- $π^{+}$ production ( $5 < p_{T} < 13$ GeV/ $c$ ), together with the double-helicity asymmetries ($5<…

physics.ins-det2014★ 5 cited

Design and performance of coded aperture optical elements for the CESR-TA x-ray beam size monitor

J. P. Alexander, A. Chatterjee, C. Conolly +11

We describe the design and performance of optical elements for an x-ray beam size monitor (xBSM), a device measuring $e^{+}$ and $e^{-}$ beam sizes in the CESR-TA storage ring. The dev…

nucl-ex2014★ 21 cited

Cross section for $b b ˉ$ production via dielectrons in d $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +372

We report a measurement of $e^{+} e^{-}$ pairs from semileptonic heavy-flavor decays in $d$ $+$ Au collisions at $s_{_{N N}} = 200$ GeV. Exploring the mass and transverse-momentum dep…

nucl-ex2014★ 34 cited

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…

nucl-ex2014★ 61 cited

Measurement of $Υ$ (1S+2S+3S) production in $p$ $+$ $p$ and Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +503

Measurements of bottomonium production in heavy ion and $p$ $+$ $p$ collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three $Υ$ state…

nucl-ex2014★ 7 cited

Azimuthal-angle dependence of charged-pion-interferometry measurements with respect to 2 $^{nd}$ - and $3^{rd}$ -order event planes in Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +383

Charged-pion-interferometry measurements were made with respect to the 2 $^{nd}$ - and 3 $^{rd}$ -order event plane for Au $+$ Au collisions at $s_{_{N N}} = 200$ GeV. A stro…

Production of π0 and η mesons in U+U collisions at sNN​​​=192 GeV

Low-momentum direct photon measurement in Cu+Cu collisions at sNN​​​=200 GeV

Cross section and longitudinal single-spin asymmetry AL​ for forward W±→μ±ν production in polarized p+p collisions at s​=510 GeV

Measurement of emission angle anisotropy via long-range angular correlations with high pT​ hadrons in d+Au and p+p collisions at sNN​​​=200 GeV

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

B-meson production at forward and backward rapidity in p+p and Cu+Au collisions at sNN​​​=200 GeV

Measurements of B→J/ψ at forward rapidity in p+p collisions at s​=510 GeV

Measurements of directed, elliptic, and triangular flow in Cu+Au collisions at sNN​​​=200 GeV

Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at sNN​​​ from 62.4 GeV to 2.76 TeV

Transverse energy production and charged-particle multiplicity at midrapidity in various systems from sNN​​=7.7 to 200 GeV

Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN​​=200 GeV

Operation of the CESR-TA vertical beam size monitor at Eb​=4 GeV

ϕ meson production in d+Au collisions at sNN​​​=200 GeV

Measurement of higher cumulants of net-charge multiplicity distributions in Au+Au collisions at sNN​​​=7.7−200 GeV

Measurement of parity-violating spin asymmetries in W± production at midrapidity in longitudinally polarized p+p collisions

Systematic study of charged-pion and kaon femtoscopy in Au+Au collisions at sNN​​​=200 GeV