si/codata/tau_constants.hpp

0001 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
0002 // unit/quantity manipulation and conversion
0003 //
0004 // Copyright (C) 2003-2008 Matthias Christian Schabel
0005 // Copyright (C) 2008 Steven Watanabe
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See
0008 // accompanying file LICENSE_1_0.txt or copy at
0009 // http://www.boost.org/LICENSE_1_0.txt)
0010
0011 #ifndef BOOST_UNITS_CODATA_TAU_CONSTANTS_HPP
0012 #define BOOST_UNITS_CODATA_TAU_CONSTANTS_HPP
0013
0014 #include <boost/units/quantity.hpp>
0015 #include <boost/units/static_constant.hpp>
0016
0017 #include <boost/units/systems/detail/constants.hpp>
0018 #include <boost/units/systems/si/amount.hpp>
0019 #include <boost/units/systems/si/area.hpp>
0020 #include <boost/units/systems/si/electric_charge.hpp>
0021 #include <boost/units/systems/si/energy.hpp>
0022 #include <boost/units/systems/si/frequency.hpp>
0023 #include <boost/units/systems/si/length.hpp>
0024 #include <boost/units/systems/si/mass.hpp>
0025 #include <boost/units/systems/si/magnetic_flux_density.hpp>
0026 #include <boost/units/systems/si/time.hpp>
0027 #include <boost/units/systems/si/wavenumber.hpp>
0028
0029 #include <boost/units/systems/si/codata/typedefs.hpp>
0030
0031 /// \file
0032 /// CODATA recommended values of fundamental atomic and nuclear constants
0033 /// CODATA 2006 values as of 2007/03/30
0034
0035 namespace boost {
0036
0037 namespace units {
0038
0039 namespace si {
0040
0041 namespace constants {
0042
0043 namespace codata {
0044
0045 /// CODATA recommended values of the fundamental physical constants: NIST SP 961
0046
0047 /// tau mass
0048 BOOST_UNITS_PHYSICAL_CONSTANT(m_tau,quantity<mass>,3.16777e-27*kilograms,5.2e-31*kilograms);
0049 /// tau-electron mass ratio
0050 BOOST_UNITS_PHYSICAL_CONSTANT(m_tau_over_m_e,quantity<dimensionless>,3477.48*dimensionless(),5.7e-1*dimensionless());
0051 /// tau-muon mass ratio
0052 BOOST_UNITS_PHYSICAL_CONSTANT(m_tau_over_m_mu,quantity<dimensionless>,16.8183*dimensionless(),2.7e-3*dimensionless());
0053 /// tau-proton mass ratio
0054 BOOST_UNITS_PHYSICAL_CONSTANT(m_tau_over_m_p,quantity<dimensionless>,1.89390*dimensionless(),3.1e-4*dimensionless());
0055 /// tau-neutron mass ratio
0056 BOOST_UNITS_PHYSICAL_CONSTANT(m_tau_over_m_n,quantity<dimensionless>,1.89129*dimensionless(),3.1e-4*dimensionless());
0057 /// tau molar mass
0058 BOOST_UNITS_PHYSICAL_CONSTANT(M_tau,quantity<mass_over_amount>,1.90768e-3*kilograms/mole,3.1e-7*kilograms/mole);
0059 /// tau Compton wavelength
0060 BOOST_UNITS_PHYSICAL_CONSTANT(lambda_C_tau,quantity<length>,0.69772e-15*meters,1.1e-19*meters);
0061
0062 } // namespace codata
0063
0064 } // namespace constants
0065
0066 } // namespace si
0067
0068 } // namespace units
0069
0070 } // namespace boost
0071
0072 #endif // BOOST_UNITS_CODATA_TAU_CONSTANTS_HPP