blob: 31f2c70fa11769b020bb9363715a50465daffb0b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
|
// Ex21_2 Page:399 (2014)
clc;clear;
m_pi_minus = 139.6; // Mass of a pion, MeV
m_p = 938.3; // Mass of a proton, MeV
m_n = 939.6; // Mass of a neutron, MeV
K_n = 0.6; // The kinetic energy of the neutron, MeV
E_pi0 = m_p + m_pi_minus - m_n - K_n; // Mass of neutral pion, MeV
E_pi0_r = sqrt(E_pi0^2 - (m_n + K_n)^2 + m_n^2); // Relativistic mass of neutral pion, MeV
printf("\nThe relativistic mass of neutral pion = %5.1f MeV", E_pi0_r);
// Result
// The relativistic mass of neutral pion = 133.5 MeV
|
