As used in this chapter:
(1) “Decedent” means a person whose life is taken by a slayer;
(2) “Property” means real or personal property; and
(3) “Slayer” means an individual who is: Convicted by a court of competent jurisdiction of or pleads guilty or nolo contendere to the unlawful killing of the decedent;
(4) Found by a preponderance of the evidence in a civil action to have unlawfully killed the decedent or procured the killing of the decedent, including an individual who has been: Acquitted by reason of insanity, mental defect or disease, or any other mental incapacity concerning a criminal charge of the unlawful killing of the decedent; or
(5) Found to lack the capacity to understand or effectively assist in a criminal proceeding against himself or herself for the unlawful killing of the decedent; or
(6) A juvenile who is adjudicated delinquent by reason of committing an act that if committed by an adult would constitute the unlawful killing of the decedent.