If we haven't already received a message from the past saying 'hey, we found the particle but you still need to look for it or else there'll be a paradox' then I'm calling no on this one.
Seriously, the first thing I'd do with a time machine is leave myself the notes for how to build a time machine in the past, creating a stable time loop.
Seriously, the first thing I'd do with a time machine is leave myself the notes for how to build a time machine in the past, creating a stable time loop.