671,775 research outputs found
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
Full text linkFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
Carta de F. J. Yndurain a Miquel Tomàs Ondiviela
No full textCarta de F. J. Yndurain del CERN a Miquel Tomàs Ondiviela en relació al lloguer d'un pis a Ginebra en la seva propera vista al CERN. A la postdata li pregunta per les partícules elemental
Editorial
No full textThis Editorial is a FOREWORD to a special issue (Vol 193) of the Journal Eur. Phys. J. Special Topics edited by C.P Li and F. Mainardi.
The contributions, all peer reviewd, are partly based on a successful international workshop entitled “Academic Day of Fractional Dynamics and Control” organized by C.P. Li (one of the Guest Editors of this issue) and W. Chen, held at Shanghai University in May 16-18, 2010, under the chair by Y.Q. Chen
Prof Kurths of the Scientif committe of the Journal was so kind to invite the Guest Editors to publish this resulting Special Topics issue, partly based on selected original contributions from the meeting as well as including some additionally invited contributions from well known experts of Fractional Dynamics and Control.
The aim of the issue is to provide an up-dated state-of-art of some topics in Fractional Dynamics and Control
Rhodite spinelle ternaire Li(TiRh)O4
No full textDulac J.-F. Rhodite spinelle ternaire Li(TiRh)O4. In: Bulletin de la Société française de Minéralogie et de Cristallographie, volume 85, 1, 1962. p. 93
Search for f(J)(2220) in radiative J/psi decays
Full text linkWe present a search for f(J)(2220) production in radiative J/psi --> gamma f(J)(2220) decays using 460 fb(-1) of data collected with the BABAR detector at the SLAC PEP-II e(+)e(-) collider. The f(J)(2220) is searched for in the decays to K+K- and (KSKS0)-K-0. No evidence of this resonance is observed, and 90% confidence level upper limits on the product of the branching fractions for J/psi --> gamma f(J)(2220) and f(J)(2220) --> K+K-((KSKS0)-K-0) as a function of spin and helicity are set at the level of 10(-5), below the central values reported by the Mark III experiment
FIGURE 2. Didymocarpus heucherifolius var. yinzhengii J.M. Li & S. J. Li var. nov.—A in Didymocarpus heucherifolius var. yinzhengii (Gesneriaceae), a new taxon from Hunan, China
No full textFIGURE 2. Didymocarpus heucherifolius var. yinzhengii J.M. Li & S. J. Li var. nov.—A, Habitat;—B, Flowers;—C, Leaf; Didymocarpus heucherifolius—D, Habitat;—E, Flowers;—F, Leaf.Published as part of Li, Jia-Mei & Li, Shi-Jin, 2014, Didymocarpus heucherifolius var. yinzhengii (Gesneriaceae), a new taxon from Hunan, China, pp. 187-190 in Phytotaxa 156 (3) on page 189, DOI: 10.11646/phytotaxa.156.3.10, http://zenodo.org/record/512794
Wang Li (1900-1986)
No full textWang Li (Wang Liaoyi) was one of the three most prominent linguists in China in the 20th century. He was born August 10, 1900, in what is now Bobai County of the Guangxi Zhuang Autonomous Area
Li Fang-Kuei (1902-1987)
No full textFang-Kuei Li was one of the foremost scholars of Thai and Sino-Tibetan studies and a major contributor to Amerind studies. Born in China, he was one of the early scholars sent to the United States to study. He had developed an interest in language while learning English, Latin, and German as part of his studies in China, and so he decided to study linguistics in the United States. In 1924, he went to the University of Michigan at Ann Arbor, receiving his B.A. 2 years later, then moved to the University of Chicago, where he received his M.A. and Ph.D., studying with Edward Sapir, Leonard Bloomfield, and Carl Darling Buck
Interfacial “Single-Atom-in-Defects” Catalysts Accelerating Li+ Desolvation Kinetics for Long-Lifespan Lithium-Metal Batteries
Full text linkThe lithium-metal anode is a promising candidate for realizing high-energy-density batteries owing to its high capacity and low potential. However, several rate-limiting kinetic obstacles, such as the desolvation of Li+ solvation structure to liberate Li+, Li0 nucleation, and atom diffusion, cause heterogeneous spatial Li-ion distribution and fractal plating morphology with dendrite formation, leading to low Coulombic efficiency and depressive electrochemical stability. Herein, differing from pore sieving effect or electrolyte engineering, atomic iron anchors to cation vacancy-rich Co1−xS embedded in 3D porous carbon (SAFe/CVRCS@3DPC) is proposed and demonstrated as catalytic kinetic promoters. Numerous free Li ions are electrocatalytically dissociated from the Li+ solvation complex structure for uniform lateral diffusion by reducing desolvation and diffusion barriers via SAFe/CVRCS@3DPC, realizing smooth dendrite-free Li morphologies, as comprehensively understood by combined in situ/ex situ characterizations. Encouraged by SAFe/CVRCS@3DPC catalytic promotor, the modified Li-metal anodes achieve smooth plating with a long lifespan (1600 h) and high Coulombic efficiency without any dendrite formation. Paired with the LiFePO4 cathode, the full cell (10.7 mg cm−2) stabilizes a capacity retention of 90.3% after 300 cycles at 0.5 C, signifying the feasibility of using interfacial catalysts for modulating Li behaviors toward practical applications
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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