Collections in this community

Recent Submissions

  • Nuclear-modification factor for open-heavy-flavor production at forward rapidity in Cu+Cu collisions at √sNN=200 GeV 

    Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2012-08-20)
    Background: Heavy-flavor production in p + p collisions is a good test of perturbative-quantum-chromodynamics (pQCD) calculations. Modification of heavy-flavor production in heavy-ion collisions relative to binary-collision ...
  • Azimuthal anisotropy of π 0 and η mesons in Au + Au collisions at s NN = 200 GeV 

    Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, John M.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus (2013-12-20)
    The azimuthal anisotropy coefficients v₂ and v₄ of π⁰ and η mesons are measured in Au + Au collisions at √sNN=200 GeV as a function of transverse momentum pT (1-14 GeV/c) and centrality. The extracted v₂ coefficients are ...
  • Evidence for transverse-momentum- and pseudorapidity-dependent event-plane fluctuations in PbPb and p Pb collisions 

    Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bhopatkar, Vallary; Hohlmann, Marcus; Kalakhety, H.; Mareskas-Palcek, D.; Roy, Tuhin S.; Yumiceva, Francisco X. (2015-09-22)
    A systematic study of the factorization of long-range azimuthal two-particle correlations into a product of single-particle anisotropies is presented as a function of pT and η of both particles and as a function of the ...
  • Suppression of away-side jet fragments with respect to the reaction plane in Au + Au collisions at √sNN=200 GeV 

    Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S. (2011-08-09)
    Pair correlations between large transverse momentum neutral pion triggers (pT=4 - 7 GeV/c) and charged hadron partners (pT=3 - 7 GeV/c) in central (0%-20%) and midcentral (20%-60%) Au+Au collisions at √sNN=200 GeV are ...
  • Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at sNN=200 GeV: Jet quenching and the response of partonic matter 

    Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-01-07)
    Azimuthal angle (Δ) correlations are presented for charged hadrons from dijets for 0.4<pT<10 GeV/c in Au+Au collisions at sNN=200 GeV. With increasing pT, the away-side distribution evolves from a broad and relatively flat ...
  • One-dimensional three-body scattering problem used as a testing ground for the K-matrix method for scattering reactions of complex systems 

    Rodjak, D.; Tobocman, William; Tandon, Gaurav K. (1972-10-01)
    The scattering reactions of three equal-mass particles constrained to move in a straight line and interacting with each other via zero-range potentials have been analyzed on the basis of the extended R-matrix theory. The ...
  • Model of sprite luminous trail caused by increasing streamer current 

    Liu, Ningyu (2010-02-25)
    This study investigates a possible physical mechanism responsible for the occurrence of the luminous trail of sprite streamers, which is also known as "afterglow." According to streamer modeling results, when sprite streamers ...
  • Spectral dependence of terrestrial gamma-ray flashes on source distance 

    Hazelton, Bryna J.; Grefenstette, Brian W.; Smith, David M.; Dwyer, Joseph R.; Shao, Xuanmin; Cummer, Steven A.; Chronis, Themis G.; Lay, Erin H.; Holzworth, Robert H. (2009-01-13)
    We use lightning sferics from the World Wide Lightning Location Network to identify storms near 362 Terrestrial Gamma-ray Flashes (TGFs). The combined spectrum of TGFs with storms within 300 km of the sub-satellite point ...
  • Co-location of lightning leader x-ray and electric field change sources 

    Howard, John J.; Uman, Martin A.; Dwyer, Joseph R.; Hill, Dustin; Biagi, Christopher J.; Saleh, Ziad H.; Jerauld, Jason E.; Rassoul, Hamid K. (2008-07-11)
    Using an eight-station time of arrival (TOA) network composed of NaI(Tl) scintillation detectors and wideband electric field derivative (dE/dt) antennas covering approximately 1 km² on the ground, we have located both the ...
  • Time evolution of terrestrial gamma ray flashes 

    Grefenstette, Brian W.; Smith, David M.; Dwyer, Joseph R.; Fishman, Gerald Jerry (2008-03-18)
    We present a study of the time evolution of TGFs observed by both RHESSI and BATSE and compare the data with Monte Carlo simulations of relativistic runaway electron avalanches that record the time of flight for individual ...
  • High-energy electron beams launched into space by thunderstorms 

    Dwyer, Joseph R.; Grefenstette, Brian W.; Smith, David M. (2008-01-31)
    Using CGRO/BATSE data, a possible new source of high-energy electrons and positrons in the earth's inner magnetosphere is presented. These particles are generated within the upper atmosphere by Compton scattering and ...
  • Correlation between energetic ion enhancements and heliospheric current sheet crossings in the outer heliosphere 

    Richardson, John D.; Stone, Edward C.; Cummings, Ace C.; Kasper, Justin C.; Zhang, Ming; Burlaga, Leonard F.; Ness, Nudel F.; Liu, Ying (2006-11-14)
    Voyagers 1 and 2 observed highly-variable beams of energetic ions in the foreshock region upstream of the termination shock (TS). At Voyager 2 (V2), the ion intensities are generally not related to the plasma properties. ...
  • Origin of heavy ions in upstream events near the earth's bow shock 

    Desai, Mihir I.; Mason, Glenn M.; Mazur, Joseph E.; Dwyer, Joseph R. (2006-09-20)
    We have surveyed the ∼20-160 keV/nucleon heavy ion composition of 2102 upstream events observed by the Wind/STEP instrument near the Earth's bow shock over a complete solar cycle from day 325, 1994 through day 90, 2006. ...
  • Propagation speed of runaway electron avalanches 

    Coleman, Lee M.; Dwyer, Joseph R. (2006-06-07)
    Simulations of relativistic runaway breakdown (RRB) are performed as functions of both time and space, resulting in explicit calculations of e-folding lengths (λ) and times (τ). The ratio of λ to τ agrees well with the ...
  • Iron and copper enrichment of suspended particles in dispersed hydrothermal plumes along the mid‐Atlantic Ridge 

    Trefry, John H.; Trocine, Robert P.; Klinkhammer, Gary P.; Rona, Peter A. (1985-08)
    Particulate Fe and Cu concentrations are used in conjunction with dissolved Mn values to identify hydrothermal venting at several sites along the Mid‐Atlantic Ridge (MAR). In dispersed hydrothermal plumes, as defined by ...
  • Cold nuclear matter effects on J/ψ production as constrained by deuteron-gold measurements at sNN=200 GeV 

    Adare, Andrew Marshall; Adler, Steven S.; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-02-28)
    We present a new analysis of J/ψ production yields in deuteron-gold collisions at √sNN=200 GeV using data taken from the PHENIX experiment in 2003 and previously published in S. S. Adler et al. [Phys. Rev. Lett 96, 012304 ...
  • X-ray bursts produced by laboratory sparks in air 

    Dwyer, Joseph R.; Rassoul, Hamid K.; Saleh, Ziad H.; Uman, Martin A.; Jerauld, J.; Plumer, J. Anderson (2005-10-22)
    X-ray observations were made during fourteen 1.5 to 2.0 m high-voltage discharges in air produced by a 1.5 MV Marx circuit. All 14 discharges generated x-rays in the ∼30 to 150 keV range. The x-rays, which arrived in ...
  • The initiation of lightning by runaway air breakdown 

    Dwyer, Joseph R. (2005-10-22)
    A mechanism for lightning initiation by the sustained runaway breakdown of air is presented. Unlike earlior models that rely upon large cosmic-ray air showers, this mechanism uses the runaway electrons produced by the ...
  • A comparison between Monte Carlo simulations of runaway breakdown and terrestrial gamma-ray flash observations 

    Dwyer, Joseph R.; Smith, David M. (2005-11-19)
    Monte Carlo simulations of the runaway breakdown of air are used to calculate the spectra of terrestrial gamma-ray flashes (TGFs), which are then compared with RHESSI and CGRO/BATSE observations. It is found that the recent ...
  • X-ray bursts associated with leader steps in cloud-to-ground lightning 

    Dwyer, Joseph R.; Rassoul, Hamid K.; Dayeh, M. A.; Caraway, Lee; Chrest, A.; Wright, Brian F.; Kozak, E.; Jerauld, J.; Uman, Martin A.; Rakov, V. (2005-01-04)
    X-ray and electric field measurements were made during five nearby negative natural lightning strikes in north central Florida during the summer of 2004. The observed X-ray emission typically was detected ∼1 ms before the ...

View more