Constants.hh File Reference

#include "Rivet/Math/MathHeader.hh"
#include "Rivet/Math/Units.hh"

Go to the source code of this file.

Namespaces
namespace	Rivet
Variables
static const double	pi = 3.14159265358979323846
static const double	twopi = 2*pi
static const double	halfpi = pi/2
static const double	pi2 = pi*pi
static const double	Avogadro = 6.0221367e+23/mole
static const double	c_light = 2.99792458e+8 * m/s
static const double	c_squared = c_light * c_light
static const double	h_Planck = 6.6260755e-34 * joule*s
static const double	hbar_Planck = h_Planck/twopi
static const double	hbarc = hbar_Planck * c_light
static const double	hbarc_squared = hbarc * hbarc
static const double	electron_charge = - eplus
static const double	e_squared = eplus * eplus
static const double	electron_mass_c2 = 0.51099906 * MeV
static const double	proton_mass_c2 = 938.27231 * MeV
static const double	neutron_mass_c2 = 939.56563 * MeV
static const double	amu_c2 = 931.49432 * MeV
static const double	amu = amu_c2/c_squared
static const double	mu0 = 4*pi*1.e-7 * henry/m
static const double	epsilon0 = 1./(c_squared*mu0)
static const double	elm_coupling = e_squared/(4*pi*epsilon0)
static const double	fine_structure_const = elm_coupling/hbarc
static const double	classic_electr_radius = elm_coupling/electron_mass_c2
static const double	electron_Compton_length = hbarc/electron_mass_c2
static const double	Bohr_radius = electron_Compton_length/fine_structure_const
static const double	alpha_rcl2
static const double	twopi_mc2_rcl2
static const double	k_Boltzmann = 8.617385e-11 * MeV/kelvin
static const double	STP_Temperature = 273.15*kelvin
static const double	STP_Pressure = 1.*atmosphere
static const double	kGasThreshold = 10.*mg/cm3
static const double	universe_mean_density = 1.e-25*g/cm3