Results 31 to 40 of about 3,646,993 (304)

B lifetime measurements with exclusively reconstructed B decays

open access: yes, 2000
Data collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC are used to study the lifetime of the B0 and B+ mesons. The data sample consists of 7.4 fb-1 collected near the Y(4S) resonance. B0 and B+ mesons are fully reconstructed in
CHIH-HSIANG CHENG, Particle Data Group
core   +1 more source

Secondary particle clusterization in carbon-carbon collision

open access: yesProceedings of the Mongolian Academy of Sciences, 2018
In the present work, using the hadron clustering algorithm, we have determined the mass of π0 mesons with excellent accuracy by restoring data of the neutral particles which are produced in the collisions of carbons and propane.
Shinebayar J   +4 more
doaj   +1 more source

Magnetic moments and electromagnetic radii of nucleon and $\Delta(1232)$ in an extended GBE model

open access: yes, 2004
We derive the exchange currents of pseudoscalar, vector, and scalar mesons from Feynman diagrams, and use them to calculate the magnetic form factors of nucleon and $\Delta(1232)$.
  +7 more
core   +1 more source

Particle-Particle Particle-Tree: A Direct-Tree Hybrid Scheme for Collisional N-Body Simulations [PDF]

open access: yes, 2011
In this paper, we present a new hybrid algorithm for the time integration of collisional N-body systems. In this algorithm, gravitational force between two particles is divided into short-range and long-range terms, using a distance-dependent cutoff ...
Funato, Yoko   +2 more
core   +1 more source

A Preliminary Study on a Method for the Morphological and Quantitative Analyses of Individual Snow Crystals and Its Application for Field Measurement

open access: yesAsian Journal of Atmospheric Environment, 2011
The main aim of this study is to establish methods of morphological preservation and elemental quantification for individual snow crystals. Individual snow crystals were collected at a height of 20 m above ground level.
Chang-Jin Ma
doaj   +1 more source

Numerical simulation of a cyclone separator to recycle the active components of waste lithium batteries

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
In this paper, cyclone separator is proposed for the first time to separate particles according to density, and it is applied to the recovery of lithium iron phosphate (LFP) from spent lithium battery materials for the first time.
Xiaoxian Pang   +7 more
doaj   +1 more source

New U(1) Gauge Symmetry of Quarks and Leptons

open access: yes, 2002
Instead of anchoring the seesaw mechanism with the conventional heavy right-handed neutrino singlet, a small Majorana neutrino mass may be obtained just as well with the addition of a heavy triplet of leptons per family to the minimal standard model of ...
ERNEST MA   +3 more
core   +1 more source

A macroscopic quantum state analysed particle by particle [PDF]

open access: yes, 2014
Explaining how microscopic entities collectively produce macroscopic phenomena is a fundamental goal of many-body physics. Theory predicts that large-scale entanglement is responsible for exotic macroscopic phenomena, but observation of entangled ...
Astiz, Yannick A. de Icaza   +4 more
core   +3 more sources

Particle Flow Gaussian Particle Filter

open access: yes2022 25th International Conference on Information Fusion (FUSION), 2022
State estimation in non-linear models is performed by tracking the posterior distribution recursively. A plethora of algorithms have been proposed for this task. Among them, the Gaussian particle filter uses a weighted set of particles to construct a Gaussian approximation to the posterior.
Karthik Comandur   +2 more
openaire   +3 more sources

Mass effect in polarization investigation at BEPC/BES and the B-factory

open access: yes, 2012
We consider the annihilation process of an electron-positron pair into a pair of heavier fermions when the initial electron and position beams are polarized.
Bo-Qiang Ma   +2 more
core   +1 more source

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