Astrophysics (Index)About

particle

(very small thing)

Some particle-physics terms and associated characteristics:

Particle termSpinStatisticsCommentExamples
fermionhalf-integer
(1/2, 3/2, 5/2, ...)
Fermi-DiracObeys Pauli exclusion principleleptons, quarks, baryons
bosoninteger
(0, 1, 2, ...)
Bose-EinsteinSome are elementary particles,
others composite
photon, gluon, W boson, Higgs boson
or a meson (a composite boson)
lepton1/2Fermi-DiracElementary particle,
a type of fermion
electron, muon, neutrino
quark1/2Fermi-DiracElementary particle,
a type of fermion
subject to strong force
up, down, top, bottom, strange, charm
hadroneither integer
or half-integer
dependsA composite particle,
can be a fermion or boson
any baryon, any meson
baryon1/2 Fermi-DiracA composite particle made of three quarks,
A type of hadron and a type of fermion
protons, neutrons
meson0 or 1 Bose-EinsteinA composite particle made up of a quark and antiquark,
A type of hadron and a type of boson,
Unstable: decays in a fraction of a second
Pion, Many other types

Atomic nuclei, ions, and (neutral) atoms all fall under the category of hadron (composite particle) and can be either a fermion or boson, depending upon the constituents. Antimatter offers another dimension: some elementary particles have an associated antiparticle, e.g., a positron is an anti-electron, but both these two are leptons and fermions.


(physics,particles)
Further reading:
http://en.wikipedia.org/wiki/Fermion
http://en.wikipedia.org/wiki/Boson
http://en.wikipedia.org/wiki/Lepton
http://en.wikipedia.org/wiki/Hadron
http://en.wikipedia.org/wiki/List_of_particles

Referenced by pages:
absorption
absorption coefficient
Advanced Composition Explorer (ACE)
advection dominated accretion flow (ADAF)
air shower
alpha particle
antimatter
ARCADE
atmospheric escape
Avogadro's number (NA)
axion (A0)
baryon acoustic oscillations (BAO)
baryon
beam
Bose-Einstein condensate (BEC)
beta decay
black hole (BH)
Blandford-Znajek mechanism (BZ process)
Boltzmann constant (k)
Boltzmann equation
Bose-Einstein statistics
bremsstrahlung
Boltzmann Transport Equation (BTE)
Cassini
cold dark matter (CDM)
chemical equilibrium (CE)
Cherenkov detector
Cherenkov radiation
CNO cycle
coherent light
collimator
column density
Compton scattering
Compton wavelength
cooling function
cosmic rays (CR)
cross section
curvature radiation
cyclotron radiation
dark matter
dark matter annihilation
de Broglie wavelength
decoupling
degeneracy weight
diffraction
diffusion
Doppler broadening
electron orbital
electron scattering
electron screening
electroweak
endothermic reaction
electron volt (eV)
exosphere
exotic star
Faraday rotation
Fokker-Planck equation
free streaming
freeze-out
fusion
fuzzy dark matter (FDM)
Galileo
Gamow peak
geodesic
Giotto
GZK limit
Hamiltonian
heating
heliosphere
Hough transform (HT)
International Cometary Explorer (ICE)
ideal gas law
ionizing radiation
interplanetary medium (IPM)
Jeans escape
Jeans parameter (λ)
JUICE
Juno
Kavli Institute
kinetic energy (KE)
lattice Boltzmann method (LBM)
Local Interstellar Cloud (LIC)
line shape function
Lorentz force
MACHO
magnetosphere
mass
Maxwell-Boltzmann distribution
Maxwell's equations
mean free path
Magnetospheric Multiscale Mission (MMS)
mole (mol)
neutralino
neutrino (ν)
neutron scattering
New Horizons (NF1)
nitrogen (N)
Orbiting Wide-angle Light Collectors (OWL)
pair production
PAMELA
particle horizon
particle spectrometer
partition function (Z)
Pauli exclusion principle
photon
pion (π)
plasma
plasma frequency
pressure integral
pulsar (PSR)
Pioneer Venus Orbiter (PVO)
quark-gluon plasma (QGP)
quantum
quantum mechanics (QM)
quantum mixing
quantum number
quantum tunneling
radiation pressure
radiative transfer (RT)
radioactive decay
radiolysis
Rayleigh scattering
repulsive dark matter (RDM)
relativistic astrophysics
relativistic effect
relativistic speed
relic
equation of radiative transfer (RTE)
scattering
scintillator
solar energetic particle (SEP)
superluminous supernova (SLSN)
Solar and Heliospheric Observatory (SOHO)
solar storm
solar wind
Solar Orbiter (SolO)
space weather
spark chamber
solar particle event (SPE)
spectrometer
spectrometry
spin (ms)
spinning dust emission
synchrotron self-Compton (SSC)
standard model
standard model of a flare
stellar structure
STEREO
Stokes number (Stk)
Sun surface features
supersymmetry (SUSY)
synchrotron radiation
temperature
Thermal Bremsstrahlung
thermal emission
thermodynamic equilibrium (TE)
Thomson scattering
Ulysses
Heisenberg uncertainty principle
Van Allen belts
VHE
Vlasov-Poisson equation
Voyager
wave-particle duality
white dwarf (WD)
WIMP
ZEPLIN

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