Now showing items 166-185 of 618

  • Identification of b-quark jets with the CMS experiment 

    CMS Collaboration; Adair, A.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2013)
    At the Large Hadron Collider, the identification of jets originating from b quarks is important for searches for new physics and for measurements of standard model processes. A variety of algorithms has been developed by ...
  • Identification techniques for highly boosted W bosons that decay into hadrons 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
    In searches for new physics in the energy regime of the LHC, it is becoming increasingly important to distinguish single-jet objects that originate from the merging of the decay products of W bosons produced with high ...
  • Identified Hadron Compositions in p+p and Au+Au Collisions at High Transverse Momenta at √sNN=200  GeV 

    STAR Collaboration; Eppley, G.; Geurts, F.; Llope, W.J.; McDonald, D.; Roberts, J.B.; Yepes, P. (2012)
    We report transverse momentum (pT≤15  GeV/c) spectra of π±, K±, p, p¯, K0S, and ρ0 at midrapidity in p+p and Au+Au collisions at √sNN=200  GeV. Perturbative QCD calculations are consistent with π± spectra in p+p collisions ...
  • Imaging molecular adsorption and desorption dynamics on graphene using terahertz emission spectroscopy 

    Sano, Y.; Kawayama, I.; Tabata, M.; Salek, K.A.; Murakami, H.; Wang, M.; Vajtai, R.; Ajayan, P.M.; Kono, J.; Tonouchi, M. (2014-08-13)
    Being an atomically thin material, graphene is known to be extremely susceptible to its environment, including defects and phonons in the substrate on which it is placed as well as gas molecules that surround it. Thus, any ...
  • Imaging the evolution of an ultracold strontium Rydberg gas 

    McQuillen, P.; Zhang, X.; Strickler, T.; Dunning, F.B.; Killian, T.C. (2013-01-07)
    Clouds of ultracold strontium 5s48s1S0 or 5s47d1D2 Rydberg atoms are created by two-photon excitation of laser-cooled 5s21S0 atoms. The spontaneous evolution of the cloud of low orbital angular momentum (low-ℓ) Rydberg ...
  • Improvements in short-term forecasting of geomagnetic activity 

    Bala, Ramkumar; Reiff, Patricia (2012)
    We have improved our space weather forecasting algorithms to now predict Dst and AE in addition to Kp for up to 6 h of forecast times. These predictions can be accessed in real time at http://mms.rice. edu/realtime/for ...
  • Impurity-Induced Plasmon Damping in Individual Cobalt-Doped Hollow Au Nanoshells 

    Thibodeaux, Christyn A.; Kulkarni, Vikram; Chang, Wei-Shun; Neumann, Oara; Cao, Yang; Brinson, Bruce; Ayala-Orozco, Ciceron; Chen, Chih-Wei; Morosan, Emilia; Link, Stephan; Nordlander, Peter; Halas, Naomi J. (2014)
    The optical properties of plasmonic nanoparticles in the size range corresponding to the electrostatic, or dipole, limit have the potential to reveal effects otherwise masked by phase retardation. Here we examine the optical ...
  • In Silico Discovery of High Deliverable Capacity Metal-Organic Frameworks 

    Bao, Yi; Martin, Richard L.; Simon, Cory; Haranczyk, Maciej; Smit, Berend; Deem, Michael W. (2015)
    Metal-organic frameworks (MOFs) are actively being explored as potential adsorbed natural gas storage materials for small vehicles. Experimental exploration of potential materials is limited by the throughput of synthetic ...
  • In silico prediction of MOFs with high deliverable capacity or internal surface area 

    Bao, Yi; Martin, Richard L.; Haranczyk, Maciej; Deem, Michael W. (2015)
    Metal–organic frameworks (MOFs) offer unprecedented atom-scale design and structural tunability, largely due to the vast number of possible organic linkers which can be utilized in their assembly. Exploration of this space ...
  • In Situ Diffraction Study of Catalytic Hydrogenation of VO2: Stable Phases and Origins of Metallicity 

    Filinchuk, Yaroslav; Tumanov, Nikolay A.; Ban, Voraksmy; Ji, Heng; Wei, Jiang; Swift, Michael W.; Nevidomskyy, Andriy H.; Natelson, Douglas (2014)
    Controlling electronic population through chemical doping is one way to tip the balance between competing phases in materials with strong electronic correlations. Vanadium dioxide exhibits a first-order phase transition ...
  • Inclusive and differential measurements of the tt¯ charge asymmetry in proton–proton collisions at √s=7 TeV 

    CMS Collaboration; Adair, A.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
    The tt¯ charge asymmetry is measured in events containing a charged lepton (electron or muon) and at least four jets, one of which is identified as originating from b-quark hadronization. The analyzed dataset corresponds ...
  • Inclusive b-jet production in pp collisions at √s=7TeV 

    CMS Collaboration; Adair, A.; Boulahouache, C.; Cuplov, V.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
    The inclusive b-jet production cross section in pp collisions at a center-of mass energy of 7 TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet ...
  • Inclusive charged hadron elliptic flow in Au + Au collisions at √sNN=7.7–39 GeV 

    STAR Collaboration; Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W.J.; McDonald, D.; Roberts, J.B.; Xin, K.; Yepes, P. (2012)
    A systematic study is presented for centrality, transverse momentum (pT), and pseudorapidity (η) dependence of the inclusive charged hadron elliptic flow (v2) at midrapidity (|η|<1.0) in Au+Au collisions at √sNN=7.7, 11.5, ...
  • Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at √s=8 TeV 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
    A search is performed for a massive new vector-like quark T, with charge 2/3, that is pair produced together with its antiparticle in proton–proton collisions. The data were collected by the CMS experiment at the Large ...
  • Inclusive search for squarks and gluinos in pp collisions at √s=7  TeV 

    CMS Collaboration; Adair, A.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
    A search is performed for heavy particle pairs produced in √s=7  TeV proton-proton collisions with 35  pb−1 of data collected by the CMS experiment at the LHC. The search is sensitive to squarks and gluinos of generic ...
  • Inclusive Search for Supersymmetry Using Razor Variables in pp Collisions at √s=7  TeV 

    CMS Collaboration; Adair, A.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2013)
    An inclusive search is presented for new heavy particle pairs produced in √s=7  TeV proton-proton collisions at the LHC using 4.7±0.1  fb−1 of integrated luminosity. The selected events are analyzed in the 2D razor space ...
  • Inelastic and elastic collision rates for triplet states of ultracold strontium 

    Traverso, A.; Chakraborty, R.; Martinez de Escobar, Y.N.; Mickelson, P.G.; Nagel, S.B.; Yan, M.; Killian, T.C. (2009-06-05)
  • Influence of magnetism on second harmonic generation 

    Reif, J.; Rau, C.; Matthias, E. (1993)
    Optical second harmonic generation (SHG) in 75° reflection was studied on longitudinally magnetized PtMnSb(111) and magnetic circular dichroism was observed with SHG. For circularly polarized incident light of 532 nm it ...
  • Inhibited Spontaneous Emission by a Rydberg Atom 

    Hulet, Randall G.; Hilfer, Eric S.; Kleppner, Daniel (1985)
    Spontaneous radiation by an atom in a Rydberg state has been inhibited by use of parallel conducting planes to eliminate the vacuum modes at the transition frequency. Spontaneous emission is observed to "turn off" abruptly ...
  • Insensitivity of the error of the minimally empirical hybrid functional revTPSSh to its parameters 

    Haunschild, Robin; Perdew, John P.; Scuseria, Gustavo E. (2012-12-11)