ACTS
Experiment-independent tracking
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Acts::PhysicalConstants Namespace Reference

Physical constants in native units. More...

Variables

constexpr double c = 1.0
 Speed of light in vacuum - native unit (dimensionless).
constexpr double hbar
 Reduced Planck constant h/2*pi.

Detailed Description

Physical constants in native units.

Unit constants are intentionally not listed.

Variable Documentation

◆ c

double Acts::PhysicalConstants::c = 1.0
constexpr

Speed of light in vacuum - native unit (dimensionless).

◆ hbar

double Acts::PhysicalConstants::hbar
constexpr
Initial value:
=
6.582119569509066e-25 * UnitConstants::GeV * UnitConstants::s
constexpr double GeV
Gigaelectronvolt - native unit for energy/mass/momentum.
Definition Units.hpp:147
constexpr double s
Definition Units.hpp:123

Reduced Planck constant h/2*pi.

Computed from CODATA 2018 constants to double precision.