Cochise College-  Physicsweb
               Physics Educational Resources 
 
                        Roger Weller, geology instructor
                         
wellerr@cochise.edu
                          
 

                    Subatomic Particle Masses

Masses are given in terms of energy equivalent (mev)
and electron masses (me)

 

electron-          0.510998901 mev

 

muon-             105.6583568 mev            206.7682662 me

 

proton-            938.271998 mev            1836.152673 me

 

neutron-          939.494013 mev            1838.544097 me

 

pion (0)-          134.9766 mev                 264.1426425 me

 

pion (+)-          139.57018 mev               273.1320551 me

 

kaon (+)-         493.677 mev                    966.102 me

 

kaon (0)-         497.661 mev                    973.898 me

 

eta-                   547.30 mev                      1071.039 me

 

rho-                  771.1 mev                        1509.01 me
 

List of fundamental constants:
http://physics.nist.gov/cgi-bin/cuu/Category?view=html&All+values.x=78

Particle masses 2006
http://pdg.lbl.gov/2006/tables/contents_tables.html