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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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115 papers · 1 filter
Measurement of K^+ \to π^0 μ^+ νγdecay using stopped kaons
E470 Collaboration, S. Shimizu, K. Horie +17
The K^+ \to π^0 μ^+ νγ() decay has been measured with stopped positive kaons at the KEK 12 GeV proton synchrotron. A sample containing 125 events was obtained.…
Measurements of the branching fractions and CP-asymmetries of B- --> D0_(CP) K- decays
The BABAR Collaboration, B. Aubert
We present a study of the decay B- --> D0_(CP) K- and its charge conjugate, where D0_(CP) is reconstructed in CP-even, CP-odd, and non-CP flavor eigenstates, based on a sample of 2…
Fermionic construction of partition functions for two-matrix models and perturbative Schur function expansions
J. Harnad, A. Yu. Orlov
A new representation of the 2N fold integrals appearing in various two-matrix models that admit reductions to integrals over their eigenvalues is given in terms of vacuum state exp…
Harmonic analysis of the Ha velocity field of NGC 4254
Laurent Chemin, Olivier Hernandez, Chantal Balkowski +2
The ionized gas kinematics of the Virgo Cluster galaxy NGC 4254 (Messier 99) is analyzed by an harmonic decomposition of the velocity field into Fourier coefficients. The aims of t…
Search for rare quark-annihilation decays, B --> Ds(*) Phi
The BABAR Collaboration, B. Aubert
We report on searches for B- --> Ds- Phi and B- --> Ds*- Phi. In the context of the Standard Model, these decays are expected to be highly suppressed since they proceed through ann…
Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
C. Marois, D. Lafreniere, R. Doyon +2
Angular differential imaging is a high-contrast imaging technique that reduces quasi-static speckle noise and facilitates the detection of nearby companions. A sequence of images i…
Compact Simple Lie Groups and Their C-, S-, and E-Transforms
Jiri Patera
New continuous group transforms, together with their discretization over a lattice of any density and admissible symmetry, are defined for a general compact simple Lie groups of ra…
Irving Segal's axiomatization of spacetime and its cosmological consequences
Aubert Daigneault
Irving Ezra Segal (1918-1998) has proposed some axioms for mathematical cosmology. These are here re-examined and Segal's redshift formula and energy conservation in the Einstein u…
On the logical structure of Bell theorems without inequalities
Anne Broadbent, Hilary A. Carteret, Andre Allan Methot +1
Bell theorems show how to experimentally falsify local realism. Conclusive falsification is highly desirable as it would provide support for the most profoundly counterintuitive fe…
Wind ionization structure of the short-period eclipsing LMC Wolf-Rayet binary BAT99-129: preliminary results
C. Foellmi, A. F. J. Moffat, S. V. Marchenko
BAT99-129 is a rare, short-period eclipsing Wolf-Rayet binary in the Large Magellanic Cloud. We present here medium-resolution NTT/EMMI spectra that allow us to disentangle the spe…
Riemann Invariants and Rank-k Solutions of Hyperbolic Systems
A. M. Grundland, B. Huard
In this paper we employ a "direct method" in order to obtain rank-k solutions of any hyperbolic system of first order quasilinear differential equations in many dimensions. We disc…
Spectral properties of bipolar minimal surfaces in S^4
Hugues Lapointe
The i-th eigenvalue of the Laplacian on a surface can be viewed as a functional on the space of Riemannian metrics of fixed area. Extremal points of these functionals correspond to…
Hauteur asymptotique des points de Heegner
Guillaume Ricotta, T. Vidick
The asymptotic behaviour of the Neron-Tate height of Heegner points on a rational elliptic curve attached to an arithmetically normalized new cusp form f of weight 2, level N and t…
Paramagnetic Materials and Practical Algorithmic Cooling for NMR Quantum Computing
Jose M. Fernandez, Tal Mor, Yossi Weinstein
Algorithmic Cooling is a method that uses novel data compression techniques and simplecquantum computing devices to improve NMR spectroscopy, and to offer scalable NMR quantum comp…
A Virgo high-resolution Halpha kinematical survey : II. The Atlas
L. Chemin, C. Balkowski, V. Cayatte +8
A catalog of ionized gas velocity fields for a sample of 30 spiral and irregular galaxies of the Virgo cluster has been obtained by using three-dimensional optical data. The aim of…
Influence of gravity waves on the internal rotation and Li abundance of solar-type stars
Corinne Charbonnel, Suzanne Talon
The Sun's rotation profile and lithium content have been difficult to understand in the context of conventional models of stellar evolution. Classical hydrodynamical models predict…
Hamiltonian 2-forms in Kahler geometry, IV Weakly Bochner-flat Kahler manifolds
Vestislav Apostolov, David M. J. Calderbank, Paul Gauduchon +1
We study the construction and classification of weakly Bochner-flat (WBF) metrics (i.e., Kahler metrics with coclosed Bochner tensor) on compact complex manifolds. A Kahler metric…
Entanglement swapping, light cones and elements of reality
A. Broadbent, A. A. Methot
Recently, a number of two-participant all-versus-nothing Bell experiments have been proposed. Here, we give local realistic explanations for these experiments. More precisely, we e…
Supersymmetric Contributions to Bs->K+K-
Seungwon Baek, David London, Joaquim Matias +1
Inspired by the existing calculation of B->piK decays in supersymmetry (SUSY), we evaluate the dominant SUSY contributions to Bs->K+K-. We show that the observables of this process…
The magnetism of the solar interior for a complete MHD solar vision
S. Turck-Chieze, T. Appourchaux, J. Ballot +37
The solar magnetism is no more considered as a purely superficial phenomenon. The SoHO community has shown that the length of the solar cycle depends on the transition region betwe…
Exciting new features in the frequency spectrum of the EC14026 star HS0702+6043 - Simultaneous g-modes and p-modes in a sdB pulsator
S. Schuh, J. Huber, S. Dreizler +7
The discovery of a long-period g-mode oscillation in the previously known short-period p-mode sdB pulsator HS0702+6043 makes this star an extraordinary object, unique as a member o…
HS0702+6043: A star showing both short-period p-mode and long-period g-mode oscillations
S. Schuh, J. Huber, S. Dreizler +4
[Context.] The hot subdwarf B star HS0702+6043 is known as a large-amplitude, short-period p-mode pulsator of the EC14026 type. Its atmospheric parameters place it at the common bo…
The Wolf-Rayet hydrogen puzzle -- an observational point of view
C. Foellmi, S. V. Marchenko, A. F. J. Moffat
Significant amounts of hydrogen were found in very hot early-type single WN stars in the SMC and the LMC. Recently, we found similar evidence in the Wolf-Rayet star of a short-peri…
The massive eclipsing LMC Wolf-Rayet binary BAT99-129. 1 Orbital parameters, hydrogen content and spectroscopic characteristics
C. Foellmi, A. F. J. Moffat, S. V. Marchenko
BAT99-129 in the LMC is one among a handful of extra-galactic eclipsing Wolf-Rayet binaries known. We present blue, medium-resolution, phase-dependent NTT-EMMI spectra of this syst…