Go (/gəʊ/) is an English verb.
There are two past participles, "gone" and "been". "Been" is used in the sense of visiting somewhere and having returned, whereas "gone" is used for other uses, including visiting somewhere and having not returned
In American English it is possible to use the bare infinitive after go instead of the to-infinitive, e.g. %"I want to go eat", %"Let's go eat!", %"Go screw yourself!". In British English however this would be considered at best non-standard, and at worst an error, and the to-infinitive is preferred, e.g. "I want to go to eat", "Let's go to eat!", "Go and screw yourself!"