Now showing items 1956-1975 of 3226

    • Observation of sequential Υ suppression in PbPb collisions 

      Sirunyan, A.M.; Chatrchyan, S. A.; Khachatryan, Vardan; Tumasyan, A. R.; Wolfgang, Adam; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Vodopiyanov, Igor B. (2012-11-26)
      The suppression of the individual ðnSÞ states in PbPb collisions with respect to their yields in pp data has been measured. The PbPb and pp data sets used in the analysis correspond to integrated luminosities of 150 b ...
    • Observation of the associated production of a single top quark -and a W boson in pp collisions at s =8TeV 

      Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-06-09)
      The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2fb-1 of proton-proton collisions at ...
    • Observation of the decay B+ → ψ(2S)ϕ(1020)K+ in pp collisions at s=8TeV 

      Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Baarmand, M.M.; Bhopatkar, Vallary; Roy, Tuhin S.; Colafranceschi, Stefano; Noonan, D.; Hohlmann, Marcus; Yumiceva, Francisco X. (2017-01-10)
      The decay B+→ψ(2S)ϕ(1020)K+ is observed for the first time using data collected from pp collisions at s=8TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6fb−1. The branching fraction ...
    • Observation of top quark pairs produced in association with a vector boson in pp collisions at √s = 8 TeV 

      Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Baarmand, M.M.; Bhopatkar, Vallary; Noonan, D.; Colafranceschi, Stefano; Hohlmann, Marcus; Roy, Tuhin S.; Yumiceva, Francisco X. (2016-01-18)
      Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb-1, collected by the CMS ...
    • Observation of Top Quark Production in Proton-Nucleus Collisions 

      Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco X. (2017-12-14)
      The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The ...
    • Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV 

      The CMS collaboration; Khachatryan, V.; Sirunyan, A.M.; Baarmand, M.M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Noonan, D.; Hohlmann, Marcus; Roy, Tuhin S.; Yumiceva, Francisco X. (2017-05-03)
      Pair production of Y(1S) mesons is observed at the LHC in proton-proton collisions at s=8 TeV by the CMS experiment in a data sample corresponding to an integrated luminosity of 20.7 fb−1. Both Y(1S) candidates are fully ...
    • Observation of Z decays to four leptons with the CMS detector at the LHC 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor (2012-12-07)
      The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb−1 at √s = 7 TeV collected by the CMS detector ...
    • Observation-constrained modeling of the ionospheric impact of negative sprites 

      Liu, Ningyu; Boggs, Levi D.; Cummer, Steven A. (2016-03-28)
      This paper reports observation and modeling of five negative sprites occurring above two Florida thunderstorms. The sprites were triggered by unusual types of negative cloud-to-ground (CG) lightning discharges with impulse ...
    • Observational constraints on the degenerate mass-radius relation 

      Holberg, Jay B.; Oswalt, Terry D.; Barstow, M. A. (2012-02-09)
      The white dwarf mass-radius relationship is fundamental to modern astrophysics. It is central to routine estimation of DA white dwarf masses derived from spectroscopic temperatures and gravities. It is also the basis for ...
    • OBSERVATIONS of AN ENERGETICALLY ISOLATED QUIET SUN TRANSIENT: EVIDENCE of QUASI-STEADY CORONAL HEATING 

      Orange, Norton Brice; Chesny, David L.; Oluşeyi, Hakeem M. (2015-09-10)
      Increasing evidence for coronal heating contributions from cooler solar atmospheric layers, notably quiet Sun (QS) conditions, challenges standard solar atmospheric descriptions of bright transition region (TR) emission. ...
    • Observations of stepping mechanisms in a rocket-and-wire triggered lightning flash 

      Biagi, Christopher J.; Uman, Martin A.; Jordan, Douglas M.; Rakov, Vladimir A.; Dwyer, Joseph R.; Hill, Jonathan D. (2010-12-14)
      We present 10 high-speed video images that depict the bottom 150 m of a downward-negative, dart-stepped leader in a rocket-and-wire triggered flash, recorded at 240 kiloframes per second (4.17 μs frame integration time), ...
    • Observations of the pulsating white dwarf G 185-32 

      Castanheira, Bárbara Garcia; Kepler, Souza Oliveira; Moskalik, Paweł A.; Zoła, Stanislaw; Pajdosz, G.; Krzensiński, J.; O'Donoghue, Darragh E.; Katz, Marshall E.; Buckley, David A H; Wood, Matt A. (2004-01)
      We observed the pulsating hydrogen atmosphere white dwarf G 185-32 with the Whole Earth Telescope in 1992. We report on a weighted Fourier transform of the data detecting 18 periodicities in its light curve. Using the ...
    • Obtaining Objective Measurements of Reaction Times to Auditory Alarms 

      Neubauer, Andrew George (2000-05)
      Several pulse parameters that were believed to affect response time to auditory alarms were investigated in a factorial experiment. 18 subjects, (14 male, 4 female), participated in an experiment where the effects of ...
    • THE OCCURRENCE OF A TOXIC DINOFLAGELLATE IN THE INDIAN RIVER SYSTEM 

      Norris, Dean R. (1983)
      References to the toxic dinoflagellate, Gonyaulax monilata Howell, in the Indian and Banana rivers are compiled from published and unpublished sources. The inability of researchers to find motile cells for extended periods ...
    • Occurrence of native mangroves and invasive Brazilian Pepper on Recreation vs. Conservation spoil islands 

      Ambrose, Hailey L.
      This study investigated the shoreline distribution of native mangroves and invasive Brazilian Pepper on Recreation and Conservation spoil islands in the Indian River Lagoon (IRL). Based on observations made from earlier ...
    • Ocean Wave Earth Diffraction Antenna (OWEDA) 

      Kobold, Michael C. (2000-07-17)
      The physical objective is to create, for a time span of about an hour, an antenna reflector with an equivalent aperture diameter of about 300 kilometers. as shown in the last part of the introduction. To do this with the ...
    • Oceanic Transport and Life History of the Tropical Western Atlantic Opossum Pipefish, Microphis brachyurus lineatus 

      Frias-Torres, Sarah (2002-05)
      The opossum pipefish, Microphis brachyurus lineatus, is a tropical migratory syngnathid. Adults live and breed in freshwater tributaries in specific emergent vegetative habitats. Juveniles associate with pelagic Sargassum ...
    • Omnisphere 

      Ballentine, Chris; Dudamel, Gerardo; Frisbie, James; Taylor, Macdonald
      Our Omnisphere robot is a user-friendly controlled platform with three spheres for wheels. A friction-based drive system rotates each sphere with 360 degrees of full planar freedom. This system eliminates the restrictive ...
    • On a class of elliptic free boundary problems with multiple solutions 

      Perera, Kanishka (2020-03)
      We prove that a certain class of elliptic free boundary problems, which includes the Prandtl-Batchelor problem from fluid dynamics as a special case, has two distinct nontrivial solutions for large values of a parameter. ...
    • On a class of two-point boundary value problems with singular boundary conditions 

      Agarwal, Ravi P.; Ma, To Fu (2006)
      A new existence theory for a class of second order two-point boundary value problems with nonlinear boundary conditions which can blow up in finite intervals is established. The proofs are based on the dual variational ...