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92 papers · 1 filter

hep-ex2002★ 10 cited

Measurement of direct photon emission in decay using stopped positive kaons

Suguru Shimizu, for KEK-E470 Collaboration

The radiative decay () has been measured with stopped positive kaons. A sample containing 4k events was analyzed, and the branch…

quant-ph2002★ 3 cited

A common algebraic description for probabilistic and quantum computations

Martin Beaudry, Jose M. Fernandez, Markus Holzer

We study the computational complexity of the problem SFT (Sum-free Formula partial Trace): given a tensor formula F over a subsemiring of the complex field (C,+,.) plus a positive…

nlin.SI2002★ 30 cited

Scalar products of symmetric functions and matrix integrals

J. Harnad, A. Yu. Orlov

We present relations between Hirota-type bilinear operators, scalar products on spaces of symmetric functions and integrals defining matrix model partition functions. Using the fer…

astro-ph2002★ 26 cited

An X-ray investigation of the NGC 346 field in the SMC (2) : the field population

Y. Naze, J. M. Hartwell, I. R. Stevens +5

We present results from a Chandra observation of the NGC346 cluster, which is the ionizing source of N66, the most luminous HII region and the largest star formation region in the…

hep-ex2002★ 13 cited

Simultaneous Measurement of the B0 Meson Lifetime and Mixing Frequency with B0 --> D*- l+ nu Decays

the BABAR Collaboration, B. Aubert

We measure the B0 lifetime τ_{B0} and the B0-B0bar oscillation frequency Δm_d with a sample of approximately 14,000 exclusively reconstructed B0 --> D*- l+ nu signal events, select…

hep-ex2002★ 7 cited

Measurement of the B0 meson lifetime with partial reconstruction of B0 --> D*- pi+ and B0 --> D*- rho+ decays

The BABAR Collaboration, B. Aubert

The neutral meson lifetime is measured with the data collected by the BaBar detector at the PEP-II storage ring during the years 1999 and 2000, with a total integrated luminosi…

astro-ph2002★ 17 cited

Effects of Quasi-Static Aberrations in Faint Companion Searches

C. Marois, R. Doyon, D. Nadeau +2

We present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. The camera's main featu…

astro-ph2002★ 6 cited

TRIDENT: an infrared camera optimized for the detection of methanated substellar companions around nearby stars

C. Marois, R. Doyon, D. Nadeau +3

A near-infrared (0.85-2.5 microns) camera in use at the Canada-France-Hawaii Telescope and at the 1.6m telescope of the Observatoire du Mont-Megantic is described. The camera is ba…

hep-ph2002★ 16 cited

Production and Decay of Excited Electrons at the LHC

O. Cakir, C. Leroy, R. Mehdiyev +1

We study single production of excited electrons at the CERN LHC through contact interactions of fermions. Subsequent decays of excited electrons to ordinary electrons and light fer…

astro-ph2002

Searching for Faint Companions with the TRIDENT Differential Simultaneous Imaging Camera

C. Marois, D. Nadeau, R. Doyon +2

We present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. Its main feature is the…

astro-ph2002★ 1 cited

Differential Simultaneous Imaging and Faint Companions: TRIDENT First Results from CFHT

C. Marois, D. Nadeau, R. Doyon +2

We present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. Its main feature is the…

hep-ex2002★ 11 cited

A Measurement of the tau -> mu nu nu Branching Ratio

The OPAL collaboration, G. Abbiendi

The tau -> mu nu nu branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of B(tau -> mu nu nu) = 0…

astro-ph2002★ 28 cited

A Critical Examination of Halo White Dwarf Candidates

P. Bergeron

A detailed analysis of halo white dwarf candidates is presented, which is based on model atmosphere fits to observed energy distributions built from photoelectric or photographic m…

cond-mat2002★ 90 cited

Spatially heterogeneous ages in glassy dynamics

Horacio E. Castillo, Claudio Chamon, Leticia F. Cugliandolo +2

We construct a framework for the study of fluctuations in the nonequilibrium relaxation of glassy systems with and without quenched disorder. We study two types of two-time local c…

hep-ex2002★ 6 cited

Further search for T-violation in the decay K^+ --> pi^0 mu^+ nu

M. Abe, M. Aliev, V. Anisimovsky

A new result for the transverse mu^+ polarization, P_T, in the decay K^+ --> pi^0 mu^+ nu has been obtained in the KEK E246 experiment. Combined with our earlier result, P_T = (-1.…

nlin.SI2002★ 6 cited

On complete integrability of the generalized Weierstrass system

P. Bracken, A. M. Grundland

In this paper we study certain aspects of the complete integrability of the Generalized Weierstrass system in the context of the Sinh-Gordon type equation. Using the conditional sy…

quant-ph2002★ 20 cited

The Impossibility of Pseudo-Telepathy Without Quantum Entanglement

Viktor Galliard, Stefan Wolf, Alain Tapp

Imagine that Alice and Bob, unable to communicate, are both given a 16-bit string such that the strings are either equal, or they differ in exactly 8 positions. Both parties are th…

hep-ex2002★ 10 cited

Charged particle multiplicities in heavy and light quark initiated events above the Z0 peak

The OPAL collaboration, G. Abbiendi

We have measured the mean charged particle multiplicities separately for bbbar, ccbar and light quark (uubar, ddbar, ssbar) initiated events produced in e+e- annihilations at LEP.…

math-ph2002★ 1 cited

Canonically conjugate variables for the periodic Camassa-Holm equation

Alexei V. Penskoi

The Camassa-Holm shallow water equation is known to be Hamiltonian with respect to two compatible Poisson brackets. A set of conjugate variables is constructed for both brackets us…

cond-mat2002★ 25 cited

Relationship between dynamical heterogeneities and stretched exponential relaxation

S. I. Simdyankin, Normand Mousseau

We identify the dynamical heterogeneities as an essential prerequisite for stretched exponential relaxation in dynamically frustrated systems. This heterogeneity takes the form of…

astro-ph2002★ 167 cited

Rotational mixing in low-mass stars : I Effect of the mu-gradients in main sequence and subgiant Pop I stars

Ana Palacios, Suzanne Talon, Corinne Charbonnel +1

We present a first set of results concerning stellar evolution of rotating low-mass stars. Our models include fully consistent transport of angular momentum and chemicals due to th…

astro-ph2002

Of Variability, or its Absence, in HgMn Stars

S. Turcotte, O. Richard

Current models and observations of variability in HgMn stars disagree. We present here the models that argue for pulsating HgMn stars with properties similar to those of Slowly Pul…

astro-ph2002★ 37 cited

Around the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar II: Results for the second observing season

Wesley N. Colley, Rudolph E. Schild, Cristina Abajas +35

We report on an observing campaign in March 2001 to monitor the brightness of the later arriving Q0957+561 B image in order to compare with the previously published brightness obse…

astro-ph2002★ 179 cited

The True Incidence of Magnetism among Field White Dwarfs

James Liebert, P. Bergeron, J. B. Holberg

We study the incidence of magnetism in white dwarfs from three large and well-observed samples of hot, cool, and nearby white dwarfs in order to test whether the fraction of magnet…