1,539,795 research outputs found

    He said that he said that I am a J

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    We axiomatize the collective identity function selecting the agents that are indirectly designated by all the individuals in the society.Collective Identity

    Light element abundances in He-rich stars

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    We present an abundance analysis of light elements in He-rich stars. The analysis is based on both low and high resolution observations collected at ESO, La Silla, Chile in the optical region and includes 6 standards and 21 He-rich stars. Light-element abundances display a diverse pattern: they range from under-solar up to above-solar values.Comment: 4 pages, no figure, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schnell and J. Ziznovsky, Contrib. Astr. Obs. Skalnate Pleso Vol. 27, No

    Annealing Effect for Supersolid Fraction in 4^4He

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    We report on experimental confirmation of the non-classical rotational inertia (NCRI) in solid helium samples originally reported by Kim and Chan. The onset of NCRI was observed at temperatures below ~400 mK. The ac velocity for initiation of the NCRI suppression is estimated to be ~10 μ\mum/sec. After an additional annealing of the sample at T=1.8T= 1.8 K for 12 hours, ~ 10% relative increase of NCRI fraction was observed. Then after repeated annealing with the same conditions, the NCRI fraction was saturated. It differs from Reppy's observation on a low pressure solid sample.Comment: to be published in J. of Low Temp. Phys. (QFS2006 proceedings

    CP violation in J/ψΛΛˉJ/\psi \rightarrow \Lambda \bar \Lambda

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    We study CP violation in J/ψΛΛˉJ/\psi \rightarrow \Lambda \bar{\Lambda} decay. This decay provides a good place to look for CP violation. Some observables are very sensitive to the Λ\Lambda electric dipole moment dΛd_\Lambda and therefore can be used to improve the experimental upper bound on dΛd_\Lambda. CP violations in the lepton pair decays of J/ψJ/\psi and Υ\Upsilon are also discussed.Comment: 8 pages, RevTex, UM-P-92/113, OZ-92/3

    Letter from J to Hubert Creekmore

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    J writes from Jackson, Mississippi, to Creekmore, care of John Valentine Schaffner in New York City. He congratulates Creekmore on the publication of The Chain in the Heart. He mentions Eudora Welty\u27s The Ponder Heart. Includes envelope.https://egrove.olemiss.edu/creekmore/1152/thumbnail.jp

    Measurement of Bc Mass and Lifetime at LHCb

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    The Bc±B_c^\pm mass and lifetime measurements using the decay Bc±J/ψπ±B_c^\pm \to J/\psi \pi^\pm at the LHCb experiment were studied. About 310 signal events are expected for a data set which corresponds to an integrated luminosity of 1 fb1^{-1}, with a B/SB/S ratio equal to 2. Based on these data, the Bc±B_c^\pm mass and lifetime can be measured with expected statistical errors below 2 MeV/c2c^2 and 30 fs, respectively.Comment: 5 pages, 2 figures, Proceedings of the XVII International Workshop on Deep-Inelastic Scattering and Related Topics, April 26-30, 2009 Madrid, Spai

    Variational Calculations for 3^3He Impurities on 4^4He Droplets

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    Variational Monte Carlo method is used to calculate ground state properties of 4^4He droplets, containing 70, 112, 168, 240, 330, and 728 particles. The resulting particle and kinetic energy densities are used as an input in the Feynman-Lekner theory for 3^3He impurities. The kinetic energy density of 4^4He atoms and the energy of the 3^3He surface states are compared with the results of previous phenomenological calculations.Comment: 12 pages, in revtex 3.0, with 5 .ps figure

    Polarization enhancement in d(p\vec{d}(\vec{p},2^2He)n reaction: Nuclear teleportation

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    I show that an experimental technique used in nuclear physics may be successfully applied to quantum teleportation (QT) of spin states of massive matter. A new non-local physical effect the `quantum-teleportation-effect' is discovered for the nuclear polarization measurement. Enhancement of the neutron polarization is expected in the proposed experiment for QT that discriminates {\it only} one of the Bell states.Comment: 3 pages, accepted for publication in J. Phys.
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