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-DiracAny particle with such spin;
obeys Pauli exclusion principle;
can be elementary particle
or composite
leptons, quarks, baryons
bosoninteger
(0, 1, 2, ...)
Bose-EinsteinAny particle with such spin;
can be elementary particle
or composite
photon, gluon, W boson, Higgs boson
or a meson (a composite boson)
lepton1/2Fermi-DiracType of elementary particle
and a type of fermion
electron, muon, neutrino
quark1/2Fermi-DiracType of elementary particle
and a type of fermion;
subject to the strong force
up, down, top, bottom, strange, charm
hadroneither integer
or half-integer
dependsAny composite particle;
can be a fermion or boson
any baryon, any meson
baryon1/2 Fermi-DiracAny composite particle made of three quarks;
a type of hadron and a type of fermion
protons, neutrons
meson0 or 1 Bose-EinsteinAny 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/List_of_particles
http://en.wikipedia.org/wiki/Fermion
http://en.wikipedia.org/wiki/Boson
http://en.wikipedia.org/wiki/Lepton
http://en.wikipedia.org/wiki/Hadron

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 information paradox
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 pressure
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)
galactic wind
Galileo
Gamow peak
geodesic
Giotto
graviton
ground state
GZK limit
Hamiltonian
Hawking radiation
heating
heliosphere
Hough transform (HT)
hydrodynamic escape
hyperon
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
magnetic field
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
photodisintegration
photon
pion (π)
plasma
plasma frequency
parts per million (PPM)
pressure integral
pulsar (PSR)
Pioneer Venus Orbiter (PVO)
quantum field theory (QFT)
quark-gluon plasma (QGP)
quantum
quantum fluctuations
quantum mechanics (QM)
quantum mixing
quantum number
quantum tunneling
quark
quark matter (QM)
quasiparticle
radiation belt
radiation pressure
radiative transfer (RT)
radioactive decay
radiolysis
Rayleigh scattering
repulsive dark matter (RDM)
reheating
relativistic astrophysics
relativistic effect
relativistic speed
relic
equation of radiative transfer (RTE)
scattering
Schrödinger equation
Schrödinger-Poisson equation
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)
string theory
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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