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Browsing MIT Open Access Articles by Title

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  • Wang, Y. H.; Hsieh, David; Pilon, Daniel Victor; Fu, Liang; Gardner, Dillon Richard; Gedik, Nuh; Lee, Y. S. (American Physical Society (APS), 2011-11)
    A differential coupling of topological surface states to left- versus right-circularly polarized light is the basis of many optospintronics applications of topological insulators. Here we report direct evidence of circular ...
  • Tokmakoff, Andrei; Ramasesha, Krupa; Petersen, Poul B.; Roberts, Sean Thomas; Martinez, Todd J.; Ufimtsev, Ivan S. (United States National Academy of Sciences, 2009-07)
    It is generally accepted that the anomalous diffusion of the aqueous hydroxide ion results from its ability to accept a proton from a neighboring water molecule; yet, many questions exist concerning the mechanism for this ...
  • Zhao, M.; Yamamoto, R. K.; Spitznagel, M.; Sciolla, Gabriella; Henderson, Shawn Wesley; Dujmic, Denis; Cowan, Ray Franklin; Fisher, Peter H. (American Physical Society, 2009-03)
    We present measurements of B meson decays to the final states ωK[superscript *], ωρ, and ωf[subscript 0], where K[superscript *] indicates a spin 0, 1, or 2 strange meson. The data sample corresponds to 465×10[superscript ...
  • Bauer, Gerry P.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Makhoul, Khaldoun; Paus, Christoph M. E. (American Physical Society, 2011-03)
    We report the first observation of two Cabibbo-suppressed decay modes of the Bs0 [B subscript s superscript 0] meson. Using a sample of pp̅ collisions at √s=1.96  [square root of 1.96] TeV corresponding to 5.9  fb-1 [fb ...
  • Balewski, Jan T.; Betancourt, Michael Joseph; Corliss, Ross Cameron; Hoffman, A. M.; Jones, C. L.; Kocoloski, Adam Philip; Leight, William Axel; Milner, Richard G.; Redwine, Robert P.; Sakuma, Tai; Surrow, Bernd; van Nieuwenhuizen, Gerrit Jan; Walker, M. (American Physical Society, 2010-05)
    Parity (P)-odd domains, corresponding to nontrivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks ...
  • Orucevic, Fedja; Cetina, Marko; Vuletic, Vladan; Grier, Andrew Todd (American Physical Society, 2009-06)
    We study cold collisions between trapped ions and trapped atoms in the semiclassical (Langevin) regime. Using Yb(+) ions confined in a Paul trap and Yb atoms in a magneto-optical trap, we investigate charge-exchange ...
  • Cowan, Ray Franklin; Fisher, Peter H.; Sciolla, Gabriella; Sekula, S. J.; Spitznagel, M.; Taylor, Frank E.; Yamamoto, R. K. (American Physical Society, 2007-07)
    We report observations of CP violation in the decays B[superscript 0]→K[superscript +]π[superscript -] and B[superscript 0]→π[superscript +]π[superscript -] in a sample of 383×10[superscript 6] Υ(4S)→BB̅ events. We find ...
  • Cowan, Ray Franklin; Dujmic, Denis; Sciolla, Gabriella (American Physical Society, 2013-03)
    We report the determination of the Cabibbo-Kobayashi-Maskawa CP-violating angle γ through the combination of various measurements involving B[superscript ±]→DK[superscript ±], B[superscript ±]→D*K[superscript ±], and ...
  • Unknown author (American Physical Society, 2013-03)
    We report a measurement of the time-dependent ratio of D[superscript 0]→K[superscript +]π[superscript -] to D[superscript 0]→K[superscript -]π[superscript +] decay rates in D[superscript *+]-tagged events using 1.0  fb[superscript ...
  • Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E. (American Physical Society, 2013-12)
    We measure the time dependence of the ratio of decay rates for D[superscript 0] → K[superscript +]π[superscript −] to the Cabibbo-favored decay D[superscript 0] → K[superscript −]π[superscript +]. The charge conjugate ...
  • Popescu, Gabriel; Badizadegan, Kamran; Feld, Michael S.; Dasari, Ramachandra Rao (SPIE, 2006-07)
    We quantify the nanoscale structure and low-frequency dynamics associated with live red blood cells. The membrane displacements are measured using quantitative phase images provided by Fourier phase microscopy, with an ...
  • Berciaud, S.; Kalbac, M.; Saito, R.; Heinz, T. F.; Farhat, H.; Dresselhaus, Mildred; Kong, Jing (American Physical Society (APS), 2011-10)
    We present experimental measurements of the electronic contribution to the Raman spectra of individual metallic single-walled carbon nanotubes (MSWNTs). Photoexcited carriers are inelastically scattered by a continuum of ...
  • Xie, Si; Makhoul, K.; Knuteson, Bruce O.; Henderson, C.; Hahn, Kristian Allan; Goncharov, Maxim; Gomez-Ceballos, Guillelmo; Choudalakis, Georgios; Bauer, Gerry P.; Paus, Christoph M. E. (American Physical Society, 2009-08)
    We report the observation of single top-quark production using 3.2  fb[superscript -1] of pp̅ collision data with √s=1.96  TeV collected by the Collider Detector at Fermilab. The significance of the observed data is 5.0 ...
  • Xie, Si; Makhoul, K.; Knuteson, Bruce O.; Henderson, C.; Hahn, Kristian Allan; Goncharov, M.; Gomez-Ceballos, Guillelmo; Choudalakis, Georgios; Bauer, Gerry P.; Paus, Christoph M. E. (American Physical Society, 2009-06)
    In CDF we have observed the reactions p+p̅ →p+X+p̅ , with X being a centrally produced J/ψ, ψ(2S), or χ[subscript c0], and γγ→μ[superscript +]μ[superscript -] in pp̅ collisions at √s=1.96  TeV. The event signature requires ...
  • Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E. (American Physical Society, 2012-02)
    We have observed exclusive γγ production in proton-antiproton collisions at √s=1.96  TeV, using data from 1.11±0.07  fb[superscript -1] integrated luminosity taken by the Run II Collider Detector at Fermilab. We selected ...
  • Sommer, Ariel Tjodolv; Wu, Cheng-Hsun; Zwierlein, Martin Wolfram; Schirotzek, Andre (American Physical Society, 2009-06)
    We have observed Fermi polarons, dressed spin-down impurities in a spin-up Fermi sea of ultracold atoms. The polaron manifests itself as a narrow peak in the impurities’ rf spectrum that emerges from a broad incoherent ...
  • Wang, Y. H.; Steinberg, Hadar; Jarillo-Herrero, Pablo; Gedik, Nuh (2013-10)
    The unique electronic properties of the surface electrons in a topological insulator are protected by time-reversal symmetry. Circularly polarized light naturally breaks time-reversal symmetry, which may lead to an exotic ...
  • Lin, Yijun; Rice, John E.; Wukitch, Stephen James; Greenwald, Martin J.; Hubbard, Amanda E.; Alex, Ince-Cushman; Lin, Liang; Marmar, Earl S.; Porkolab, Miklos; Reinke, Matthew Logan; Tsujii, Naoto; Wright, John C. (American Institute of Physics, 2009-03)
    At modest [superscript 3]He levels (n[subscript 3He]/n[subscript e]~8%–12%), in relatively low density D([superscript 3]He) plasmas, [overline n]e<=1.3×10[superscript 20] m[superscript −3], heated with 50 MHz rf power at ...
  • Alver, Burak Han; Bauer, Gerry P.; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Dutta, Valentina; Everaerts, Pieter Bruno Bart; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Harris, P.; Kim, Y.; Klute, Markus; Lee, Y. J.; Li, W.; Loizides, Constantin; Luckey, P. David, Jr.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Roland, Christof E.; Roland, Gunther M.; Rudolph, M.; Stephans, George S. F.; Sumorok, Konstanty C.; Sung, Kevin Kai Hong; Wenger, Edward Allen; Wyslouch, B.; Xie, S.; Yang, M.; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco (Springer-Verlag, 2010-09)
    Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7 TeV are presented, using data collected with the CMS detector over a ...
  • Joly, V. L. Joseph; Kiguchi, Manabu; Hao, Si-Jia; Takai, Kazuyuki; Enoki, Toshiaki; Sumii, Ryohei; Amemiya, Kenta; Muramatsu, Hiroyuki; Hayashi, Takuya; Kim, Yoong Ahm; Endo, Morinobu; Campos-Delgado, Jessica; López-Urías, Florentino; Botello-Méndez, Andrés; Terrones, Humberto; Terrones, Mauricio; Dresselhaus, Mildred (American Physical Society, 2010-05)
    The electronic structure and spin magnetism for few-layer-graphene nanoribbons synthesized by chemical vapor deposition have been investigated using near-edge x-ray absorption fine structure (NEXAFS) and electron-spin ...
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