Hmm, I think the effect would be more localized, and involve a lot of strange forms of matter. My guess is it would be similar to what happened to Anatoli Bugorski when he stuck his head into a proton beam.

That doesn't mean getting hit by this particle would feel like a punch, since what you feel when you get punched is a transfer of momentum rather than a transfer of energy.

Interesting. I see from your link that this particle had 1/6 of the energy of a lethal dose of x-rays.

I'm guessing I would probably survive, but certainly wouldn't volunteer to get hit with such a particle, and I'm guess that if it went through my brain stem or maybe my heart, there's a good chance it would kill me.

So I'm confused. If some specific relatively small devices (relatively to the size of the Earth) managed to pick up several of these over the years, surely some of these are hitting people? Are people randomly feeling like they got impacted (if not punched, as per a sister comment) out of nowhere? Apologies if this is a ridiculous question; physics was always my weak suit.