Physics at the Large Hadron Collider: A New Window on Matter, Spacetime and the Universe I
summary
Argues how the LHC program and the CMS detector actually discover and measure the 125 GeV Higgs: rare channels γγ and ZZ→4ℓ give ~1% mass resolution and mass known to ~0.2%. Describes hardware (76,000 crystals, 100 million channels) and software: particle-flow reconstruction, trigger farm and worldwide grid (≈300 sites, 13 Tier‑1, ~170 Tier‑2), recording ~1 GB/s after filtering. Shows multivariate/boosted-tree methods that raise sensitivity ~1.8× and points to emerging deep learning gains.
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