Only The Longest Threads starts with a description of, first the excitement, and then the euphoria, at CERN on July 4 2012. Luckily, the tradition of live tweeting and blogging events had set in by then and many people with front row seats documented the discovery as it was unveiled. Reading their blow by blow accounts is a wonderful way to relive those triumphant moments.
Here are two of my favorites:
Lizzy Davies' article in the Guardian - with tweets and quotes from Ian Sample
Sean Carroll's Cosmic Variance Blog on Discover. (Check out the photographs!)