Three reaction rows show baryon number being kept, lost, and canceled by antimatter.
Three rows show when baryon number is kept, lost, or canceled. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Keeping a proton keeps baryon number
Baryon ledger starts at 3 and ends at 3; accepted bit is 1.
3→3,a=1
Replacing a proton loses baryon number
Baryon ledger starts at 3 and ends at 0; accepted bit is 0.
3→0,a=0
Matter and antimatter can cancel baryon number
Baryon ledger starts at 0 and ends at 0; accepted bit is 1.