>>96773406
This study looks at the overhand shuffle but the overhand shuffle and the Hindu shuffle are essentially interchangeable.
The ceremony for how you hold and manipulate the cards is different but the way the cards are reordered is the same.

That disclaimer aside, here is the study: https://www2.math.upenn.edu/~pemantle/papers/overhand2.pdf
tl;dr that shuffle is dogshit.