Frequently Used Physical and Constants for IAS

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Frequently used constants:

Frequently Asked Constants
ConstantSymbolValue
Alpha particle mass
Avogadro constant
Boltzmann constant
Electron mass
Electron volt
Electronic charge
Faraday constant
Gravitational constant
Neutron mass
Permeability of free space
Permittivity of free space
Planck constant
Proton mass
Proton-electron mass ratio
Speed of light
Universal gas constant

Particle physics:

Particle Physics
ClassNameSymbolMassMean lifeYear of discovery
LeptonsElectron

Neutrino

Muon

Tau

1

207

3500

Stable

Stable

1897

1957

1937

1975

MesonsPi meson

K meson

273

264

≈ 970

?

1947

1947

1947

BaryonsProton

Neutron

Lambda

Sigma

Chi

omega

1836

1839

2183

2327

2573

3272

1897

1932

1947

1953

1954

1964

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