The phrase "a distinct event" is correct and usable in written English.
It can be used to refer to an event that is clearly defined or separate from others.
Example: "The conference will feature a distinct event focused on emerging technologies in the industry."
Alternatives: "a separate occurrence" or "a unique incident."
"The 1991 Gulf War was a distinct event with a beginning and an end.
The results showed that in the epoxies vitrification was a distinct event, occurring separately from gelation and ending with the end of the cure reaction.
Just as many bands now survive by performing live, there are economic advantages in turning a film into a distinct event that resists digitization.
It is shown that, during loading, nucleation of martensite in an austenitic region is a distinct event requiring a higher stress than the stress required subsequently to continue the transformation.
The gig takes place on 12 August to coincide with the closing ceremony of the games at the Olympic stadium in Stratford but is a distinct event, the climax of London's celebrations for the games, organised by the mayor of London, the Royal Parks and the London Borough of Tower Hamlets and supported by BT.
Colonel Julian declined to discuss this episode but said that each time NATO aircraft returned to strike again was a distinct event and a distinct decision, and that it was not a general practice for NATO to "double tap" its targets.
A procedure was implemented for identifying complex, interrelated events (e.g. a subject was raped, beaten-up, and threatened with a weapon on the same occasion) and codes them as a single distinct event.
Motion in the second billiard-ball is a quite distinct event from motion in the first; nor is there anything in the one to suggest the smallest hint of the other".
So on the standard view, when the cue ball knocks the nine ball into the corner pocket, there is said to be an (actual) event e1 of the cue ball striking the nine ball, and an (actual, distinct) event e2 of the nine ball sinking into the corner pocket, such that e1 is cause and e2 effect.
A total of 22 distinct event pathways were identified in this study (see Table 3).
A total of 22 distinct event pathways were identified for patients at risk of developing breast, ovarian, breast and ovarian or colorectal cancer.
