These symmetries are further explicitly broken by the masses of the quarks, so that the pions are not massless, but their mass is significantly smaller than typical hadron masses.
Need sümmeetriad rikutakse ekspliitselt kvarkide masside tõttu, nii et piionid ei ole massitud, kuid nende mass on oluliselt väiksem, kui tüüpilise hadroni mass.