Now showing items 61-80 of 902

    • Response of Low-Latitude Ionosphere to Medium-Term Changes of Solar and Geomagnetic Activity 

      Kutiev, I.; Otsuka, Y.; Pancheva, D.; Heelis, Roderick A. (2012-08-28)
      The paper presents the medium-term quasi periodic (∼9-27 day) response of middle and low-latitude ionosphere to solar F10.7) and geomagnetic (Kp-index) forcing. The ionospheric response is examined by wavelet analysis of ...
    • The Nuclear Localization of SWI/SNF Proteins Is Subjected to Oxygen Regulation 

      Dastidar, Ranita Ghosh; Hooda, Jagmohan; Shah, Ajit; Cao, Thai M.; Robert Michael Henke; Zhang, Li (2012-08-29)
      Background: Hypoxia is associated with many disease conditions in humans, such as cancer, stroke and traumatic injuries. Hypoxia elicits broad molecular and cellular changes in diverse eukaryotes. Our recent studies ...
    • On Mathematical Contributions of Petr Petrovich Zabreiko 

      Balanov, Zalman, 1959-; Gaishun, I.; Gorohovik, V.; Krawcewicz, Wieslaw; Lebedev, A. (2012-09-05)
      No abstract available.
    • Reciprocal Regulation of Annexin A2 and EGFR with Her-2 in Her-2 Negative and Herceptin-Resistant Breast Cancer 

      Shetty, Praveenkumar K.; Thamake, Sanjay I.; Biswas, Swati; Johansson, Sonny L.; Vishwanatha, Jamboor K. (PLOS, 2012-09-05)
      Alternative survival pathways are commonly seen to be upregulated upon inhibition of receptor tyrosine kinases (RTK), including Her-2. It is established that treatment with Herceptin leads to selective overexpression and ...
    • Searching for Majorana Fermions in 2D Spin-Orbit Coupled Fermi Superfluids at Finite Temperature 

      Gong, Ming; Chen, G.; Jia, S.; Zhang, Chuanwei (2012-09-05)
      Recent experimental breakthroughs in realizing spin-orbit (SO) coupling for cold atoms have spurred considerable interest in the physics of two-dimensional SO coupled Fermi superfluids, especially topological Majorana ...
    • Evidence for an excess of B̄ → D^(*)_τ⁻ ν̅_τ decays 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (Amer Physical Soc, 2012-09-06)
      Based on the full BABAR data sample, we report improved measurements of the ratios R(D^( *) = ℬ(B̄→D^( *)τ -ν {̄τ}) / ℬ(B̄→D^( *)ℓe̅ν ̅ℓ), where ℓ is either e or μ. These ratios are sensitive to new physics contributions ...
    • Study of the Reaction e⁺e⁻ -→ J/ψ π⁺π⁻ via Initial-State Radiation at BABAR 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-09-12)
      We study the process e⁺e⁻ → J/ψ π⁺π⁻ with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies 10.58 and 10.54 GeV, ...
    • Global Stability Lobes of Turning Processes with State-Dependent Delay 

      Hu, Qingwen.; Krawcewicz, Wieslaw; Turi, Jànos (SIAM, 2012-09-13)
      We obtain global stability lobes of two models of turning processes with inherit nonsmoothness due to the presence of state-dependent delays. In the process, we transform the models with state-dependent delays into systems ...
    • Measurement of the t-Channel Single Top-Quark Production Cross Section in pp Collisions at √s = 7 TeV with the ATLAS Detector 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdelalim, A. A.; Abdinov, O.; Ahsan, Mahsana; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration (Elsevier B. V., 2012-09-17)
      We report a measurement of the cross section of single top-quark production in the t-channel using 1.04 fb⁻¹ of pp collision data at √s̅ = 7 TeV recorded with the ATLAS detector at the LHC. Selected events feature one ...
    • Gas hydrate and free gas petroleum system in 3D seismic data, offshore Angola 

      Nyamapfumba, Martin; McMechan, George C. (Society of Exploration Geophysicists, 2012-09-26)
      Evidence of gas hydrate and free gas occurrences in a 3D seismic volume from the West-Central Coastal Province of the Congo Fan, offshore Angola, illustrates all the components of a complete petroleum system. Analysis and ...
    • Improved Limits on B⁰ Decays to Invisible (+γ) Final States 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-09-27)
      We establish improved upper limits on branching fractions for B⁰ decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible ...
    • Study of X(3915) → J/ψω in Two-Photon Collisions 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-10-01)
      We study the process γγ → J/ψω using a data sample of 519.2  fb⁻¹ recorded by the BABAR detector at SLAC at the PEP-II asymmetric-energy e⁺e⁻ collider at center-of-mass energies near the Υ(nS) (n = 2, 3, 4) resonances. We ...
    • Underlying Event Characteristics and their Dependence on Jet Size of Charged-Particle Jet Events in pp Collisions at √(s̅)=7  TeV with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdelalim, A. A.; Abdinov, O.; Abi, B.; Ahsan, Mahsana; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration (American Physical Society, 2012-10-09)
      Distributions sensitive to the underlying event are studied in events containing one or more chargedparticle jets produced in pp collisions at √s̅ = 7 TeV with the ATLAS detector at the Large Hadron Collider (LHC). These ...
    • ATLAS Measurements of the Properties of Jets for Boosted Particle Searches 

      Ahsan, Mahsana; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration (American Physical Society, 2012-10-15)
      Measurements are presented of the properties of high transverse momentum jets, produced in proton-proton collisions at a center-of-mass energy of √s=7  TeV. The data correspond to an integrated luminosity of 35  pb⁻¹ and ...
    • Exclusive Measurements of b → sγ Transition Rate and Photon Energy Spectrum 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-10-17)
      We use 429 fb⁻¹ of e⁺e⁻ collision data collected at the Υ(4S) resonance with the BABAR detector to measure the radiative transition rate of b → sγ with a sum of 38 exclusive final states. The inclusive branching fraction ...
    • Efficient Optical Pumping of Organic-Inorganic Heterostructures for Nonlinear Optics 

      Agranovich, Vladimir M.; Basko, D. M.; La Rocca, G. C. (American Physical Society, 2012-10-18)
      We theoretically consider a hybrid heterostructure made of an inorganic quantum well in close proximity with an organic material overlayer whereby the latter is used to funnel excitation energy to the former in order to ...
    • Periodic Canard Trajectories with Multiple Segments Following the Unstable Part of Critical Manifold 

      Krasnosel'skii, Alexander M.; O'Grady, Edward; Pokrovskii, Alexei V.; Rachinskii, Dmitry I. (2012-11-01)
      We consider a scalar fast differential equation which is periodically driven by a slowly varying input. Assuming that the equation depends on n scalar parameters, we present simple sufficient conditions for the existence ...
    • Branching Fraction and Form-Factor Shape Measurements of Exclusive Charmless Semileptonic B Decays, and Determination of |V_{ub}| 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-11-05)
      We report the results of a study of the exclusive charmless semileptonic decays, B0→π -+ν, B+ → π0⁺ν, B +→ω +ν, B +→η +ν, and B +→η ′+ν (=e or μ) undertaken with approximately 462×106 BB̄ pairs collected at the Υ(4S) ...
    • Search for Resonances Decaying to η_c π+ π- in Two-Photon Interactions 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-11-06)
      We report a study of the process γγ→X→η cπ +π -, where X stands for one of the resonances χ c2(1P), η c(2S), X(3872), X(3915), or χ c2(2P). The analysis is performed with a data sample of 473.9fb -1 collected with the ...
    • Precision Measurement of the B→X_sγ Photon Energy Spectrum, Branching Fraction, and Direct CP Asymmetry A_{CP}(B→X_{s+d}γ) 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-11-09)
      The photon spectrum in the inclusive electromagnetic radiative decays of the B meson, B→X_sγ plus B→X_dγ, is studied using a data sample of (382.8 ± 4.2)×10⁶Υ(4S) →BB̄ decays collected by the BABAR experiment at SLAC. ...