What Does PNC Stand For?

PNC stands for Parity Nonconservation

PNC, or Parity Nonconservation, refers to the phenomenon in particle physics where certain processes do not exhibit symmetry under spatial inversion, meaning that the laws of physics governing these processes remain unchanged when spatial coordinates are reversed. This concept challenges the principle of parity, which asserts that physical systems should behave identically when viewed in a mirror. Parity nonconservation has significant implications for understanding fundamental interactions, particularly in weak nuclear forces, and has been experimentally confirmed in various particle interactions, enhancing our comprehension of matter-antimatter asymmetries in the universe.