Förmodligen Snabbare Död: En D & D Gamma World Novel (2011) av Mel Odom.
Denna Amazon-recension nämner nanobotten och Hadron Collider:
Now it's been a long time since I cracked open a Gamma World rule book, so I forget what the mythology said about the cause of the apocalypse, but in these books it was a mishap with the Large Hadron Collider. It tore apart the world, and opened ripples, gateways to other worlds and dimensions, bringing all manner of strange creatures into ours.
Having the plot device of rampant inter-dimensional wormholes means that you can introduce basically anything you want into your story, and Mr Odom certainly took advantage of that. This book has human-animal hybrids, cyborgs, nanobot-enhanced humans, alien creatures, and more kinds of psionic abilities than I could count, all set in what 200 years before was known as Oklahoma.
The story follows Hella, a bio-engineered young woman with a mysterious past, and her bisonoid companion, Stampede, as they serve as guides for a group hunting for a lost object in the ruinous wastes of the American southwest. It's a fast-paced adventure chock full of gun fights, raiders, mutant creatures, mystery, loyalty, and betrayal.
Hittade med Google-frågan book "hadron collider" buffalo nanobots site:goodreads.com .