Scrum does not allow making any kind of change in a sprint. As the Scrum Guide describes
During the Sprint: No changes are made that would endanger the Sprint Goal
Although it is not described on the question, chances are that the changes required in those experiments may endanger the Sprint Goal.
If that is the case, a solution could be not to use Scrum but Kanban or Scrumban. Scrumban considers defining sprints as in Scrum but it allow changes as needed.