Ukukepezela kohoyana
Kumchazandalo wohoyana, ukukepezela kohoyana (noma ukugobhozela kohoyana) kuwushintsho lwesikhashana olwenzeka ngokwethukela, nolwenzeka enanini lwesidlakalasi emkhathini, njengoba luchazwa isimiso sokungazinzi sika-Heisenberg. Kuwukukepezela okuncane okwethukelayo okwenzeka ezinkundleni ezimelela izinhlayiyana eziyisiseko, ezifana nezinkundla zamazuba nezobuwonga ezimelela isiphoqi senzubawonga esithwelwe amabane, izinkundla W, Z ezithwele isiphoqi esibuthaka, kanye nezinhlayiyana ezithwele isiphoqi esiqatha.