What is the difference between an electron and a beta particle ?
What is the difference between -LSB- math -RSB- -LCB- \ beta -RCB- ^ -LCB- - -RCB- -LSB- / math -RSB- and -LSB- math -RSB- -LCB- \ beta -RCB- ^ -LCB- + -RCB- -LSB- / math -RSB- decay ?