Stephen Adler
A5075590318- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Radiopharmaceutical Chemistry and Applications
- Medical Imaging Techniques and Applications
- Prostate Cancer Treatment and Research
- Cancer, Hypoxia, and Metabolism
- Prostate Cancer Diagnosis and Treatment
- Immune Cell Function and Interaction
- Radiation Detection and Scintillator Technologies
- Radiomics and Machine Learning in Medical Imaging
- Cancer, Lipids, and Metabolism
- Advanced X-ray and CT Imaging
- Nuclear reactor physics and engineering
- Hematopoietic Stem Cell Transplantation
- Nuclear Physics and Applications
- Radioactive Decay and Measurement Techniques
- Child and Animal Learning Development
- Advanced MRI Techniques and Applications
- CAR-T cell therapy research
- Renal Diseases and Glomerulopathies
- Urologic and reproductive health conditions
- Angiogenesis and VEGF in Cancer
- Pancreatic and Hepatic Oncology Research
- Mesenchymal stem cell research
Frederick National Laboratory for Cancer Research
2013-2023
National Cancer Institute
2012-2023
Leidos (United States)
2013-2021
Leidos Biomedical Research Inc. (United States)
2015-2021
National Institutes of Health
2012-2019
Cancer Institute (WIA)
2017
Science Applications International Corporation (United States)
2010-2015
Mercer Island School District
2015
Brookhaven National Laboratory
2000-2014
York University
2010-2013
Transverse momentum spectra for charged hadrons and neutral pions in the range 1 GeV/c<p(T)<5 GeV/c have been measured by PHENIX experiment at RHIC Au+Au collisions root square[s(NN)] = 130 GeV. At high p(T) from peripheral nuclear are consistent with scaling p+p average number of binary nucleon-nucleon collisions. The central significantly suppressed when compared to binary-scaled expectation, also similarly collisions, indicating a novel nuclear-medium effect energies.
The centrality dependence of transverse momentum distributions and yields for ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}},{K}^{\ifmmode\pm\else\textpm\fi{}},p$, $\overline{p}$ in $\text{Au}+\text{Au}$ collisions at $\sqrt{{s}_{NN}}=200\phantom{\rule{0.3em}{0ex}}\text{GeV}$ midrapidity are measured by the PHENIX experiment Relativistic Heavy Ion Collider. We observe a clear particle mass shapes spectra central below $\ensuremath{\sim}2\phantom{\rule{0.3em}{0ex}}\text{GeV}∕c$ ${p}_{T}$....
Transverse momentum spectra of neutral pions in the range 1<pT<10 GeV/c have been measured at midrapidity by PHENIX experiment BNL RHIC Au+Au collisions sNN=200 GeV. The π0 multiplicity central reactions is significantly below yields same sNN peripheral and p+p scaled number nucleon-nucleon collisions. For most bin, suppression factor ∼2.5 pT=2 increases to ∼4–5 pT≈4 GeV/c. At larger pT, remains constant within errors. deficit already apparent semiperipheral smoothly with centrality.Received...
Transverse momentum spectra of charged hadrons with p(T)<8 GeV/c and neutral pions p(T)<10 have been measured at midrapidity by the PHENIX experiment BNL RHIC in d+Au collisions sqrt[s(NN)]=200 GeV. The yields are compared to those p+p same sqrt[s(NN)] scaled up number underlying nucleon-nucleon d+Au. yield ratio does not show suppression observed central Au+Au RHIC. Instead, there is a small enhancement high particles.
Occurrence of cerebrovascular accidents has been associated with cocaine abuse. We investigated the relative distribution cerebral blood flow (CBF) in groups chronic users, and normal controls. Relative CBF was measured using positron emission tomography 15 oxygen-labelled water. The users showed areas deranged as evidenced by patchy regions defective isotope accumulation throughout their brain. decreased prefrontal cortex when compared subjects. repeated scans some after 10 days withdrawal,...
The PHENIX experiment has measured midrapidity ([FORMULA: SEE TEXT]) transverse momentum spectra of electrons as a function centrality in Au+Au collisions at [FORMULA: TEXT]. Contributions from photon conversions and light hadron decays, mainly Dalitz decays pi0 eta mesons, were removed. resulting nonphotonic electron are primarily due to the semileptonic hadrons carrying heavy quarks. Nuclear modification factors determined by comparison p+p collisions. A significant suppression high pT is...
Azimuthal correlations of jet-induced high-pT charged hadron pairs are studied at midrapidity in Au+Au collisions √sNN=200 GeV. The distribution jet-associated partner hadrons (1.0<pT<2.5 GeV/c) per trigger (2.5<pT<4.0 is found to vary with collision centrality, both shape and yield, indicating a significant effect the nuclear medium on jet fragmentation process.Received 1 July 2005DOI:https://doi.org/10.1103/PhysRevLett.97.052301©2006 American Physical Society
The invariant differential cross section for inclusive neutral-pion production in p+p collisions at √s=200 GeV has been measured midrapidity (|η|<0.35) over the range 1<pT≲14 GeV/c by PHENIX experiment Relativistic Heavy Ion Collider. Predictions of next-to-leading order perturbative QCD calculations are consistent with these measurements. precision our result is sufficient to differentiate between prevailing gluon-to-pion fragmentation functions.Received 28 April...
We present results for the charged-particle multiplicity distribution at midrapidity in Au-Au collisions square root of [s(NN)] = 130 GeV measured with PHENIX detector RHIC. For 5% most central we find dN(ch)/d eta(vertical line eta 0) 622+/-1(stat)+/-41(syst). The results, analyzed as a function centrality, show steady rise particle density per participating nucleon centrality.
The PHENIX experiment at the relativistic heavy ion collider (RHIC) has measured transverse energy and charged particle multiplicity midrapidity in $\mathrm{Au}+\mathrm{Au}$ collisions center-of-mass energies $\sqrt{{s}_{\mathrm{NN}}}=19.6,130$, $200\phantom{\rule{0.3em}{0ex}}\text{GeV}$ as a function of centrality. presented results are compared to measurements from other RHIC experiments lower energies. $\sqrt{{s}_{\mathrm{NN}}}$ dependence $dE{}_{T}/d\ensuremath{\eta}$...
We report on the yield of protons and antiprotons, as a function centrality transverse momentum, in Au+Au collisions at sqrt[s(NN)]=200 GeV measured midrapidity by PHENIX experiment BNL Relativistic Heavy Ion Collider. In central intermediate momenta (1.5<p(T)<4.5 GeV/c) significant fraction all produced particles are antiprotons. They show centrality-scaling behavior different from that pions. The pmacr;/pi p/pi ratios enhanced compared to peripheral Au+Au, p+p, e(+)e(-) collisions. This...
Inclusive transverse momentum spectra of $\ensuremath{\eta}$ mesons have been measured within ${p}_{T}=2--10\text{ }\text{ }\mathrm{GeV}/c$ at midrapidity by the PHENIX experiment in $\mathrm{Au}+\mathrm{Au}$ collisions $\sqrt{{s}_{NN}}=200\text{ }\mathrm{GeV}$. In central yields are significantly suppressed compared to peripheral $\mathrm{Au}+\mathrm{Au}$, $d+\mathrm{Au}$, and $p+p$ scaled corresponding number nucleon-nucleon collisions. The magnitude, centrality, ${p}_{T}$ dependence...
To characterize uptake of 1-amino-3-fluorine 18-fluorocyclobutane-1-carboxylic acid ((18)F FACBC) in patients with localized prostate cancer, benign prostatic hyperplasia (BPH), and normal tissue to evaluate its potential utility delineation intraprostatic cancers histopathologically confirmed cancer comparison magnetic resonance (MR) imaging.Institutional review board approval written informed consent were obtained for this HIPAA-compliant prospective study. Twenty-one men underwent dynamic...
This work characterizes the uptake of <sup>11</sup>C-acetate in prostate cancer (PCa), benign hyperplasia, and normal tissue comparison with multiparametric MRI, whole-mount histopathology, clinical markers to evaluate potential utility for delineating intraprostatic tumors a population patients localized PCa. <b>Methods:</b> Thirty-nine men presumed PCa underwent dynamic–static abdominal–pelvic PET/CT 30 min 3-T MRI before prostatectomy. images were registered MR using pelvic bones initial...
Two-particle azimuthal correlation functions are presented for charged hadrons produced in Au+Au collisions at the Relativistic Heavy Ion Collider (sqrt [s(NN)]=130 GeV). The measurements permit determination of elliptic flow without event-by-event estimation reaction plane. extracted values (v2) show significant sensitivity to both collision centrality and transverse momenta emitted hadrons, suggesting rapid thermalization relatively strong velocity fields. When scaled by eccentricity zone...
Bose-Einstein correlations of identically charged pion pairs were measured by the PHENIX experiment at mid-rapidity in Au+Au collisions $\sqrt{s_{\rm NN}}$ = 200 GeV. The Bertsch-Pratt radius parameters determined as a function transverse momentum pair and centrality collision. Using \it{full} Coulomb correction, ratio $R_{\rm out}/R_{\rm side}$ is smaller than unity for $<k_{\rm T}>$ from 0.25 to 1.2 GeV/c all centralities. However, using recently developed partial correction methods, we...
Transverse momentum spectra and yields of hadrons are measured by the PHENIX collaboration in $\text{Au}+\text{Au}$ collisions at $\sqrt{{s}_{NN}}=130\phantom{\rule{0.3em}{0ex}}\text{GeV}$ Relativistic Heavy Ion Collider. The time-of-flight resolution allows identification pions to transverse momenta $2\phantom{\rule{0.3em}{0ex}}\text{GeV}∕c$ protons antiprotons $4\phantom{\rule{0.3em}{0ex}}\text{GeV}∕c$. yield rises approximately linearly with number nucleons participating collision, while...
Transverse single-spin asymmetries to probe the transverse-spin structure of proton have been measured for neutral pions and nonidentified charged hadrons from polarized proton-proton collisions at midrapidity s=200 GeV. The data cover a transverse momentum (pT) range 1.0–5.0 GeV/c 0.5–5.0 hadrons, Feynman-x value approximately zero. seen in this previously unexplored kinematic region are consistent with zero within errors few percent. In addition, inclusive hadron cross section 0.5<pT<7.0...
Two-pion correlations in square root[s(NN)] = 130 GeV Au+Au collisions at RHIC have been measured over a broad range of pair transverse momentum k(T) by the PHENIX experiment RHIC. The dependent radii are similar to results from heavy-ion 4.1, 4.9, and 17.3 GeV, whereas longitudinal radius increases monotonically with beam energy. ratio outwards sidewards (R(out)/R(side)) is consistent unity independent k(T).
The first measurement of energy produced transverse to the beam direction at Relativistic Heavy-Ion Collider Brookhaven National Laboratory is presented. midrapidity density per participating nucleon rises steadily with number participants, closely paralleling rise in charged-particle density, such that <E(T)>/<N(ch)> remains relatively constant as a function centrality. calculated via Bjorken's prescription for 2% most central Au+Au collisions square root[s(NN)] = 130 GeV least epsilon(Bj)...
Cross sections for midrapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported transverse momenta 3 < pT 16 GeV/c. Next-to-leading order perturbative QCD (pQCD) describes data well >5 GeV/c, where uncertainties measurement and theory comparable. We also report on effect requiring to be isolated from parton jet energy. The observed fraction is described by pQCD >7
The PHENIX experiment has measured midrapidity transverse momentum spectra (0.4<p(T)<4.0 GeV/c) of single electrons as a function centrality in Au+Au collisions at sqrt[s(NN)]=200 GeV. Contributions from photon conversions and Dalitz decays light neutral mesons are by introducing thin (1.7% X0) converter into the acceptance statistically removed. subtracted nonphotonic electron primarily due to semileptonic hadrons containing heavy quarks, mainly charm lower p(T). For all centralities,...